| Patent application number | Description | Published |
|---|
| 20080224561 | Electric motor, method for manufacturing electric motor, electromagnetic coil for electric motor, electronic device, and fuel cell equipped apparatus - An electric motor having an electromagnetic coil, wherein the electromagnetic coil has wiring formed by a vapor deposited insulating layer wound on the entire exterior circumference of a conductive substrate. | 09-18-2008 |
| 20080237219 | Device equipped with planar heater - The planar heater includes an insulating substrate, an electric conductive film disposed on the substrate, a plurality of electrodes both attached to one side of the electric conductive film, and an insulating film covering the electric conductive film. The electric conductive film is preferably formed of material having a resistance temperature coefficient of 420 ppm/° C. or higher at normal temperature. | 10-02-2008 |
| 20080246423 | DRIVE REGENERATIVE CONTROL SYSTEM - Provided is a drive regenerative control system of a drivee with a motor superior in torque and weight balance and suitable for miniaturization as the drive source. In a drive regenerative control system having a drive source with an electric motor, a drivee, a control circuit having a drive control circuit of the motor and a regenerative control circuit, and a detection unit for detecting the driving status of the drivee, the drive control circuit and regenerative control circuit have a control unit for controlling, linearly or in multiple stages, the duty ratio of the drive or regenerative signal to be supplied to the motor based on the phase difference of the phase of the detection signal from the detection unit and the command value signal to the motor. | 10-09-2008 |
| 20080265816 | BRUSHLESS ELECTRIC MACHINE - The brushless electric machine includes a first drive member ( | 10-30-2008 |
| 20080303380 | PIEZOELECTRIC ACTUATOR AND METHOD FOR DRIVING THE SAME - The piezoelectric actuator includes a piezoelectric element structure ( | 12-11-2008 |
| 20090001913 | DRIVE CONTROL CIRCUIT FOR ELECTRIC MOTOR - The drive control circuit for an electric motor is provided. The drive control circuit includes: an original drive signal generator that generates an original drive signal, based on a positional signal which indicates a relative position of a first drive member and a second drive member of the electric motor; an excitation ratio signal generator that generates an excitation ratio signal which indicates a ratio of excitation interval to non-excitation interval of coils of the electric motor, based on a speed signal indicating a relative speed of the first drive member and the second drive member of the electric motor; an excitation interval signal generator that generates a binary excitation interval signal which specifies the excitation interval and the non-excitation interval of the coils of the electric motor, based on the positional signal and the excitation ratio signal; and a mask circuit that generates a drive signal for driving the electric motor by masking part of the original drive signal based on the excitation interval signal. | 01-01-2009 |
| 20090009118 | DRIVE CONTROL CIRCUIT FOR ELECTRIC MOTOR - The drive control circuit for an electric motor is provided. The drive control circuit includes: an original drive signal generator that generates an original drive signal; an excitation interval setter that is able, for each half cycle of respective length π in each 2π excitation cycle of the original drive signal, to arbitrarily set excitation intervals during which to excite coils of the electric motor to any one of a plurality of intervals which include at least either one of a symmetrical interval centered on a center of each half-cycle and an unsymmetrical interval; and a drive signal shaping circuit that generates a drive signal for driving the electric motor, by validating the original drive signal during the excitation intervals and invalidating the original drive signal during non-excitation intervals other than the excitation interval. | 01-08-2009 |
| 20090033166 | BRUSHLESS MOTOR - The brushless motor includes a stator having a electromagnetic coil and a position sensor; an axis fixed to the stator; and a rotor having a permanent magnet. The rotor rotates around the axis. The rotor is linked to a driven member that is driven by the brushless motor. | 02-05-2009 |
| 20090033169 | MAGNETIC STRUCTURE AND MOTOR EMPLOYING SAID MAGNETIC STRUCTURE, AND DRIVER COMPRISING SAID MOTOR - Provided is a small motor superior in weight/torque balance. A phase stator | 02-05-2009 |
| 20090039809 | MOTOR CONTROL METHOD AND DEVICE - A control device includes a drive control unit that performs control for driving the electromagnetic coil, and a regeneration control unit that performs control for regenerating power from the electromagnetic coil. The drive control unit includes an excitation interval setting unit that sets an excitation interval and a non-excitation interval such that voltage is applied to the electromagnetic coil during the excitation interval while not applied to the electromagnetic coil during the non-excitation interval. The excitation interval has a symmetrical shape whose center corresponds to a π/2 phase point of the induced voltage waveform, and the non-excitation interval has a symmetrical shape whose center corresponds to the π phase point of the induced voltage waveform. The regeneration control unit includes a regeneration interval setting unit that sets a regeneration interval and a non-regeneration interval such that power is regenerated from the electromagnetic coil during the regeneration interval while not regenerated from the electromagnetic coil during the non-regeneration interval. The regeneration interval has a symmetrical shape whose center corresponds to the π/2 phase point of the induced voltage waveform, and the non-regeneration interval has a symmetrical shape whose center corresponds to the π phase point of the induced voltage waveform. | 02-12-2009 |
| 20090058338 | DRIVING CIRCUIT FOR MOTOR AND DEVICE EQUIPPED WITH DRIVING CIRCUIT - The circuit structured to drive a motor is provided. The circuit includes: a division signal generator that generates a division signal dividing each of a high level period and a low level period of a binary position signal representing a relative position of a magnetic coil to a permanent magnet into a preset number of multiple divisions; a pulse width setter that sets a pulse width for PWM control corresponding to each of the multiple divisions represented by the division signal; and a PWM signal generator that performs PWM control with the set pulse width, thereby generating a PWM signal as a driving signal for driving the motor. | 03-05-2009 |
| 20090063876 | INFORMATION PROCESSING APPARATUS AND SEMICONDUCTOR INTEGRATED CIRCUIT - The information processing apparatus equipped with a microprocessor is provided. The information processing apparatus equipped with a microprocessor includes: an operation clock signal generator that generates a frequency-variable operation clock signal supplied to the microprocessor; and a power supply voltage generator that determines a value of a power supply voltage to be supplied to the microprocessor according to a logarithm of a frequency of the operation clock signal and generates the power supply voltage. | 03-05-2009 |
| 20090066275 | BRUSHLESS ELECTRIC MACHINE AND APPARATUS USING THE SAME - A first member has a magnet assembly that includes at least one permanent magnet pair, and a second member includes an electromagnetic coil. A control circuit controls the supply of power to the electromagnetic coil as well as regeneration of power from the electromagnetic coil. The permanent magnet pair generates its strongest magnetic field along a magnetic field direction on homopolar contact planes where first magnetic poles contact one another, outward from the center of the permanent magnet pair along the magnetic field direction. The electromagnetic coil is positioned such that current will flow in a direction intersecting the magnetic field direction. | 03-12-2009 |
| 20090085412 | BRUSHLESS ELECTRIC MACHINE - A first member ( | 04-02-2009 |
| 20090096310 | ELECTRICALLY POWERED DEVICE - The electrically powered device is provided. The electrically powered device includes: multiple stators structured to respectively have electromagnetic coils and position sensors; a shaft fastened to the multiple stators; and multiple rotors structured to respectively have permanent magnets and arranged to rotate around the shaft; wherein the multiple rotors are connected with a driven member driven by the electrically powered device. | 04-16-2009 |
| 20090115360 | PWM CONTROL CIRCUIT AND PWM CONTROL METHOD - The PWM control circuit includes a polarity determination unit, a full wave rectification unit, an adjustment unit that generates an adjusted waveform signal by adjusting waveform of the full wave rectification signal, and a carrier signal generating unit that generates a fixed frequency carrier signal. The PWM control circuit further includes a comparator that generates an original PWM signal by comparing the adjusted waveform signal and the carrier signal, and a PWM waveform shaping unit that generates a first PWM signal for the positive polarity section and a second PWM signal for the negative polarity section, by shaping the original PWM signal according to the polarity signal. | 05-07-2009 |
| 20090115535 | PWM CONTROL CIRCUIT AND MOTOR EQUIPPED WITH THE SAME - The PWM control circuit is provided. The PWM control circuit includes: a PWM control signal generator that generates a PWM period signal defining a period of a PWM signal and a PWM resolution signal specifying a resolution in one period of the PWM period signal; and a PWM unit that generates the PWM signal based on the PWM period signal and the PWM resolution signal, wherein the PWM control signal generator changes a frequency of the PWM resolution signal while keeping a frequency of the PWM period signal unchanged. | 05-07-2009 |
| 20090134723 | ELECTRIC MOTOR DEVICE - The electric motor device is provided. The electric motor device includes: a first drive member that has a plurality of permanent magnets; a second drive member that has a plurality of electromagnetic coils; and a clearance controller that shifts at least either one of the first drive member and the second drive member, thereby changing a size of a clearance formed between the first drive member and the second drive member. | 05-28-2009 |
| 20090160383 | ELECTRIC MACHINE - A two-phase electric motor includes first and second coil groups and a magnet group. In the magnet group, N poles and S poles are disposed alternatively opposite the first and second coil groups. The first and second coil groups are disposed at positions that are out of phase with each other by an odd multiple of π/2 in electrical angles. The coils of the first and second coil groups have substantially no magnetic material cores, and the electric motor has substantially no magnetic material yoke for forming a magnetic circuit. | 06-25-2009 |
| 20090206602 | FLUID POWER GENERATOR - The fluid power generator is provided. The fluid power generator includes: a first member that has multiple coils; a second member that is rotatable relative to the first member and that has multiple permanent magnets; a rotating member that is mechanically linked with either one of the first member and the second member to rotate by fluid force; and a clearance controller that moves at least one of the first member and the second member to thereby change a clearance between the first member and the second member, wherein the clearance controller changes the clearance in such a manner as to make the clearance smaller after a start of rotation of the rotating member than before the start of rotation of the rotating member. | 08-20-2009 |
| 20090206607 | POWER GENERATOR AND MOTOR DEVICE - The fluid power generator is provided. The fluid power generator includes: a rotating member that rotates by fluid force; a generator motor that is mechanically linked with the rotating member and that is configured to function both as a generator and as a motor; a rotation speed meter that measures a rotation speed of the generator motor; and a controller that controls the generator motor, wherein the controller has a control mode to keep the rotation of the rotating member irrespective of a variation in flow rate of the fluid. | 08-20-2009 |
| 20090236192 | SHOCK ABSORBER - The shock absorber includes N magnets arranged such that like poles of adjacent magnets face each other to generate repulsive force, where N is an integer of at least 2; and a magnet holder that accommodates the N magnets such that a distance between the adjacent magnets is variable, whereby the shock absorber absorbs a shock applied to two end magnets disposed at respective ends of the N magnets. | 09-24-2009 |
| 20090295318 | MOTOR AND DRIVE CONTROL SYSTEM THEREOF - Provided is a motor having a magnetic polar unit in which a permanent magnetic polar array having arranged therein alternately a plurality of permanent magnetic polar elements in alternate opposite poles is made to face a plurality of electromagnetic coil arrays alternately excited at opposite poles, and the permanent magnetic polar array is made to move thereby; wherein the motor further comprises a sensor for detecting the periodical magnetic change accompanying the movement of the permanent magnetic polar array, the output of the sensor is directly returned as a direct drive waveform to the electromagnetic coils, and this drive circuit forms the excitation signal based on the return signal. | 12-03-2009 |
| 20100052458 | BRUSHLESS ELECTRIC MACHINE AND DEVICE COMPRISING SAID MACHINE - To provide a technique that improves an efficiency of using a magnetic field in a brushless electric machine. A brushless electric machine includes a first member having N sets (N is an integer of 2 or more) of electromagnetic groups, and a second member that has N+1 sets of magnetic field forming member groups and can move in a predetermined moving direction in relative to the first member. One set of the electromagnetic coil group and one set of the magnetic field forming member group are alternately disposed along a direction perpendicular to the moving direction. | 03-04-2010 |
| 20100219899 | PWM CONTROL CIRCUIT AND MOTOR EQUIPPED WITH THE SAME - The PWM control circuit is provided. The PWM control circuit includes: a PWM control signal generator that generates a PWM period signal defining a period of a PWM signal and a PWM resolution signal specifying a resolution in one period of the PWM period signal; and a PWM unit that generates the PWM signal based on the PWM period signal and the PWM resolution signal, wherein the PWM control signal generator changes a frequency of the PWM resolution signal while keeping a frequency of the PWM period signal unchanged. | 09-02-2010 |
| 20100225261 | ENERGY CONVERTER AND ELECTROMECHANICAL APPARATUS - An energy converter includes magnetic coils of N phases (N is an integer of 3 or more), and a PWM drive circuit for driving the magnetic coils of N phases, wherein the magnetic coil of each phase can be independently controlled by the PWM drive circuit. | 09-09-2010 |
| 20100320907 | LIGHT SOURCE DEVICE AND PROJECTOR INCLUDING LIGHT SOURCE DEVICE - An optical source device includes a solid high frequency oscillating unit that outputs a high frequency signal, a waveguide that receives the high frequency signal output from the solid high frequency oscillating unit and radiates the received high frequency signal as a microwave, and a light emitting unit that emits light by the microwave radiated from the waveguide unit. A container of the waveguide unit has a space surrounded by reflective surfaces that reflect the microwave radiated from the antenna unit so as to collect the microwave. A projector includes this optical source device, an optical modulating unit that modulates a light beam emitted from the light emitting unit of the optical source device according to image information to form an optical image, and a projecting unit that projects the optical image formed by the optical modulating unit. | 12-23-2010 |
| 20110084565 | BRUSHLESS ELECTRIC MACHINE - A first member ( | 04-14-2011 |
| 20110084637 | MOTOR AND DRIVE CONTROL SYSTEM THEREOF - Provided is a motor having a magnetic polar unit in which a permanent magnetic polar array having arranged therein alternately a plurality of permanent magnetic polar elements in alternate opposite poles is made to face a plurality of electromagnetic coil arrays alternately excited at opposite poles, and the permanent magnetic polar array is made to move thereby; wherein the motor further comprises a sensor for detecting the periodical magnetic change accompanying the movement of the permanent magnetic polar array, the output of the sensor is directly returned as a direct drive waveform to the electromagnetic coils, and this drive circuit forms the excitation signal based on the return signal. | 04-14-2011 |
| 20110101902 | BRUSHLESS ELECTRIC MACHINE - The brushless electric machine includes a first drive member ( | 05-05-2011 |
| 20110115422 | DRIVING CIRCUIT FOR MOTOR AND DEVICE EQUIPPED WITH DRIVING CIRCUIT - The circuit structured to drive a motor is provided. The circuit includes: a division signal generator that generates a division signal dividing each of a high level period and a low level period of a binary position signal representing a relative position of a magnetic coil to a permanent magnet into a preset number of multiple divisions; a pulse width setter that sets a pulse width for PWM control corresponding to each of the multiple divisions represented by the division signal; and a PWM signal generator that performs PWM control with the set pulse width, thereby generating a PWM signal as a driving signal for driving the motor. | 05-19-2011 |
| 20110184557 | PRESSURE DETECTION DEVICE AND PRESSURE DETECTION METHOD - A pressure detection device includes a buffer member and a sensor assembly. The buffer member is deformable by a pressure change, and includes a plurality of magnets in an evenly dispersed arrangement. The sensor assembly includes at least one magnetic sensor to detect a variation of a magnetic field accompanied by deformation of the buffer member. | 07-28-2011 |
| 20110187242 | ELECTRIC MOTOR DEVICE - The electric motor device is provided. The electric motor device includes: a first drive member that has a plurality of permanent magnets; a second drive member that has a plurality of electromagnetic coils; and a clearance controller that shifts at least either one of the first drive member and the second drive member, thereby changing a size of a clearance formed between the first drive member and the second drive member. | 08-04-2011 |
| 20110241470 | BRUSHLESS ELECTRIC MACHINE - A first member ( | 10-06-2011 |
| 20110273120 | PWM CONTROL CIRCUIT AND PWM CONTROL METHOD - The PWM control circuit includes a polarity determination unit, a full wave rectification unit, an adjustment unit that generates an adjusted waveform signal by adjusting waveform of the full wave rectification signal, and a carrier signal generating unit that generates a fixed frequency carrier signal. The PWM control circuit further includes a comparator that generates an original PWM signal by comparing the adjusted waveform signal and the carrier signal, and a PWM waveform shaping unit that generates a first PWM signal for the positive polarity section and a second PWM signal for the negative polarity section, by shaping the original PWM signal according to the polarity signal. | 11-10-2011 |
| 20110273126 | ROBOTIC DRIVE CONTROL - A robotic device includes an electric motor in which a drive control circuit includes a driver circuit for intermittently supplying the magnetic coils with a supply voltage VSUP; a switching signal generating circuit that generates a switching signal supplied to the driver circuit; and a voltage setter that supplies a supply voltage control value Ya to the switching signal generating circuit. By adjusting pulse width of the switching signals DRVA | 11-10-2011 |
| 20110291532 | CORELESS ELECTROMECHANICAL DEVICE - A coreless electromechanical device having a first and second member which are movable relative to each other, includes: a permanent magnet disposed on the first member; an air-cored electromagnetic coil disposed on the second member; and a coil back yoke which, being disposed on the second member, has a stacked structure, wherein the electromagnetic coil is disposed between the permanent magnet and coil back yoke, the electromagnetic coil has an active coil region, in which a force causing the first member to move relatively in a movement direction is generated in the electromagnetic coil, and coil end regions, and the coil back yoke covers the active coil region, but does not cover the coil end regions. | 12-01-2011 |
| 20110291600 | ELECTROMECHANICAL DEVICE - An electromechanical device includes: a magnet coil; a PWM driving circuit; and a control unit, wherein the control unit performs a first control of setting an excitation interval which is an interval in which a PWM drive signal is supplied to the magnet coil and a second control of changing a duty ratio of the PWM drive signal, and wherein the control unit performs an advance angle control of putting the phase of the center of the excitation interval earlier than the phase in which a counter-electromotive force generated in the magnet coil has the maximum value in the first control, and increases the duty ratio of the PWM drive signal in the second control so that a gain is greater than 100% when the gain is 100% at the time of generating the PWM drive signal so as to have a sinusoidal shape. | 12-01-2011 |
| 20120007538 | ROBOT - The drive control circuit for an electric motor is provided. The drive control circuit includes: an original drive signal generator that generates an original drive signal; an excitation interval setter that is able, for each half cycle of respective length π in each 2π excitation cycle of the original drive signal, to arbitrarily set excitation intervals during which to excite coils of the electric motor to any one of a plurality of intervals which include at least either one of a symmetrical interval centered on a center of each half-cycle and an unsymmetrical interval; and a drive signal shaping circuit that generates a drive signal for driving the electric motor, by validating the original drive signal during the excitation intervals and invalidating the original drive signal during non-excitation intervals other than the excitation interval. | 01-12-2012 |
| 20120062162 | BRUSHLESS ELECTRIC MACHINE - The brushless electric machine includes a first drive member ( | 03-15-2012 |
| 20120074820 | ELECTROMECHANICAL DEVICE, ACTUATOR USING THE SAME, AND MOTOR - An electromechanical device includes a central shaft; a rotor having a rotor magnet disposed along the periphery of the central shaft; a stator disposed on the periphery of the rotor; and a rotation mechanism connected to the rotor and used for transfer of a rotational driving force, wherein in the rotor, between the central shaft and the rotor magnet, a space which opens in at least one of an axial direction of the central shaft and houses at least part of the rotation mechanism is formed. | 03-29-2012 |
| 20120081053 | MOTOR CONTROL METHOD AND DEVICE - A control device includes a drive controller that controls the driving of an electromagnetic coil, and a regeneration controller that controls the regeneration of power from the electromagnetic coil. The drive controller includes an excitation interval setting unit that sets excitation and non-excitation intervals such that voltage is applied to the electromagnetic coil during the excitation interval but is not applied during the non-excitation interval. The excitation and non-excitation intervals are symmetrical with centers that respectively correspond to the π/2 and π phase points of the induced voltage waveform. The regeneration controller includes a regeneration interval setting unit that sets regeneration and non-regeneration intervals such that power is regenerated from the electromagnetic coil during the regeneration interval but is not regenerated during the non-regeneration interval. The regeneration and non-regeneration intervals are symmetrical with centers that respectively correspond to the π/2 and π phase points of the induced voltage waveform. | 04-05-2012 |
| 20120098356 | LINEAR MOTOR, BACK YOKE FOR LINEAR MOTOR, AND MANUFACTURING METHOD OF BACK YOKE - A linear motor includes a slider unit having a magnet row in which plural permanent magnets are arranged in series so that the same poles are opposed to each other and moving in an arrangement direction of the magnet row by electromagnetic force, a stator unit in which the slider unit is inserted at an inner circumference side and electromagnetic coils for plural phases that receive supply of drive currents at different phases with respect to each phase are arranged along a movement direction of the slider unit, and a back yoke provided at an outer circumference side of the electromagnetic coils for plural phases in the stator unit, wherein plural slits along the movement direction of the slider unit for dividing a generation region of eddy currents into plural parts are formed in the back yoke. | 04-26-2012 |
| 20120098469 | LINEAR MOTOR - A linear motor includes a slider unit having a magnet row in which plural permanent magnets are arranged in series so that the same poles are opposed to each other, a stator unit including electromagnetic coils for plural phases arranged along a movement direction of the slider unit, and plural magnetic detector devices, wherein the plural magnetic detector devices are provided in response to the phases of the electromagnetic coils for plural phases and detect magnetic flux radially extending in a direction perpendicular to the arrangement direction of the permanent magnets at boundaries between the permanent magnets of the magnet row and output signal waveforms for plural phases at phases equal to phases of waveforms of back electromotive forces generated in the respective electromagnetic coils for plural phases when the magnet row moves. | 04-26-2012 |
| 20120146562 | PWM CONTROL CIRCUIT AND MOTOR EQUIPPED WITH THE SAME - The PWM control circuit is provided. The PWM control circuit includes: a PWM control signal generator that generates a PWM period signal defining a period of a PWM signal and a PWM resolution signal specifying a resolution in one period of the PWM period signal; and a PWM unit that generates the PWM signal based on the PWM period signal and the PWM resolution signal, wherein the PWM control signal generator changes a frequency of the PWM resolution signal while keeping a frequency of the PWM period signal unchanged. | 06-14-2012 |
| 20120146566 | PWM CONTROL CIRCUIT AND MOTOR EQUIPPED WITH THE SAME - The PWM control circuit is provided. The PWM control circuit includes: a PWM control signal generator that generates a PWM period signal defining a period of a PWM signal and a PWM resolution signal specifying a resolution in one period of the PWM period signal; and a PWM unit that generates the PWM signal based on the PWM period signal and the PWM resolution signal, wherein the PWM control signal generator changes a frequency of the PWM resolution signal while keeping a frequency of the PWM period signal unchanged. | 06-14-2012 |
| 20120176007 | ELECTRIC MACHINE DEVICE, ACTUATOR USING THE SAME, MOTOR, ROBOT, AND ROBOT HAND - An electric machine device includes: a rotor including a rotor magnet arranged along the outer circumference of a center shaft; a stator arranged on the outer circumference of the rotor; a rotating mechanism coupled to the rotor and used for transmission of rotation driving force; and a load connecting section that connects the rotating mechanism and a load. In the rotor, a housing space that is opened on one side in an axis direction of the center shaft and houses at least a part of the rotating mechanism is formed between the center shaft and the rotor magnet. The rotating mechanism includes: an input section connected to or formed integrally with the rotor; a fixed section connected to or formed integrally with the stator; and an output section connected to or formed integrally with the load connecting section. The rotting mechanism functions as a speed-increasing gear or a reduction gear. | 07-12-2012 |
| 20120180592 | ELECTRICAL MACHINE APPARATUS AND ROBOT - An electrical machine apparatus includes an electromagnetic coil, a rotor magnet, n (n is an integer not less than 2) magnetic sensors to detect an electric angle of the rotor magnet, and a position detection part to detect a position of the rotor magnet by using outputs of the magnetic sensors. Each of the magnetic sensors generates a sensor output signal having a curved line waveform and a period of electric angle 2π of the electrical machine apparatus. The respective n magnetic sensors are arranged to generate the sensor output signals with a phase difference other than an integer times π in electric angle. The position detection part calculates a movement amount of the rotor magnet from a starting point as a position before movement by using the sensor output signals of the n magnetic sensors. | 07-19-2012 |
| 20120200184 | RELATIVE DRIVING DEVICE, MOVING VEHICLE, AND ROBOT - A relative driving device includes a stator; a first rotor; and a second rotor, in which the stator includes a first electromagnetic coil and a first control unit that controls current supplied to the first electromagnetic coil, the first rotor includes a first magnet and a second magnet, the second rotor includes a second electromagnetic coil and a second control unit that controls current supplied to the second electromagnetic coil, the first electromagnetic coil and the first magnet are disposed so as to face each other to form the first driving mechanism, and the second electromagnetic coil and the second magnet are disposed so as to face each other to form the second driving mechanism. | 08-09-2012 |
| 20120206079 | ENERGY CONVERTER AND ELECTROMECHANICAL APPARATUS - An energy converter includes magnetic coils of N phases (N is an integer of 3 or more), and a PWM drive circuit for driving the magnetic coils of N phases, wherein the magnetic coil of each phase can be independently controlled by the PWM drive circuit. | 08-16-2012 |
| 20120206850 | ELECTROMECHANICAL DEVICE, MOVABLE BODY, ROBOT, METHOD OF MEASURING TEMPERATURE OF ELECTROMECHANICAL DEVICE - An electromechanical device includes a rotor, a stator having a magnetic coil, a sensor adapted to detect an electric angle of the rotor, a control section adapted to perform a PWM drive on the magnetic coil based on a signal from the sensor, a resistor connected in series to the magnetic coil when measuring temperature of the electromechanical device, and a voltage measurement section adapted to measure a voltage between both ends of the resistor, and the control section calculates an electric resistance of the magnetic coil using the voltage between the both ends of the resistor measured by the voltage measurement section, and then determines the temperature of the magnetic coil using the electric resistance of the magnetic coil in a measurement period in which application of a drive voltage to the magnetic coil is stopped in the PWM drive. | 08-16-2012 |
| 20120212161 | ELECTROMECHANICAL DEVICE, MOVABLE BODY, AND ROBOT - An electromechanical device includes a first drive member having a magnetic coil, a second drive member capable of moving relatively to the first drive member, and a control section adapted to drive the magnetic coil and to perform regeneration of energy from the magnetic coil when decelerating the second drive member, and the control section includes a first regeneration mode of setting a first regenerative interval centered on a zero crossing point of an induced voltage caused in the magnetic coil, and performing the regeneration. | 08-23-2012 |
| 20120217827 | ELECTROMECHANICAL DEVICE, MOVABLE BODY, AND ROBOT - An electromechanical device includes at least one magnetic coil formed of an electric wire coated with a first insulating material wound a plurality of times to have a ring-like shape, and an insulating section made of a second insulating material and disposed so as to cover at least apart of the magnetic coil, and a withstand voltage between an outside of the insulating section and the magnetic coil across the insulating section is higher than a withstand voltage between the electric wires adjacent to each other in the magnetic coil. | 08-30-2012 |
| 20120235606 | ELECTRIC MOTOR, ROBOT, AND BRAKE DEVICE - An electric motor includes a rotor and a stator. Apart of the rotor includes a first frictional portion forming a movement locus. The stator includes a second frictional portion which brakes and stops the rotation of the rotor by a mechanical frictional force produced by contact between the second frictional portion and the first frictional portion, and a braking actuator which does not allow application of braking by shifting the second frictional portion away from the first frictional portion during power supply to the electric motor, and allows application of braking by pressing the second frictional portion against the first frictional portion during cutoff of power supply to the electric motor. | 09-20-2012 |
| 20120267204 | SHOCK ABSORBER - The shock absorber includes N magnets arranged such that like poles of adjacent magnets face each other to generate repulsive force, where N is an integer of al least 2; and a magnet holder that accommodates the N magnets such that a distance between the adjacent magnets is variable, whereby the shock absorber absorbs a shock applied to two end magnets disposed at respective ends of the N magnets. | 10-25-2012 |
| 20120293035 | CORELESS ELECTRIC MACHINE APPARATUS, MOVING BODY AND ROBOT - A coreless electric machine apparatus includes: a permanent magnet arranged on the first member; two-phase coreless electromagnetic coils arranged on the second member; a coil back yoke arranged on the second member, wherein the electromagnetic coils include effective coil areas for generating a force to move the first member relatively to the second member, and coil end areas, the effective coil areas of the two-phase electromagnetic coils have same shape and are arranged in a cylindrical area between the permanent magnet and the coil back yoke, the coil end area of a first phase electromagnetic coil of the two-phase electromagnetic coils is bent in an inside direction or an outside direction of the cylindrical surface, the two-phase electromagnetic coils have same electric resistance value, and the coil back yoke covers outer peripheral areas of the effective coil areas and does not cover outer peripheral areas of the coil end areas. | 11-22-2012 |
| 20120306310 | CORELESS ELECTRIC MACHINE APPARATUS, MOVING BODY, ROBOT AND MANUFACTURING METHOD OF THE CORELESS ELECTRIC MACHINE APPARATUS - A coreless electric machine includes: a permanent magnet on a first member; N-phase (N≧2) air-core electromagnetic coils on a second member; and a coil back yoke on the second member, each electromagnetic coil including a conductor bundle in which a conductor is wound M times (M≧2), coil sub-aggregates are provided, each including the N electromagnetic coils of the respective N phases and in each of which a conductor bundle forming an effective coil area of a first-phase electromagnetic coil contacts a second conductor bundle forming an effective coil area of another phase electromagnetic coil, and the second conductor bundle is in an air-core portion of the first phase electromagnetic coil, and the coil sub-aggregates are arranged along the cylindrical area, in which the coil sub-aggregates do not overlap in a radiation direction of the cylindrical area, and adjacent coil sub-aggregates contact each other. | 12-06-2012 |
| 20120313461 | ELECTROMECHANICAL DEVICE, ROBOT, MOVABLE BODY, AND METHOD OF MANUFACTURING ELECTROMECHANICAL DEVICE - An electromechanical device includes: a center shaft; a rotor having a rotor magnet disposed around an outer periphery of the center shaft; and a stator disposed on an outer periphery of the rotor, wherein the center shaft is formed of a carbon-fiber-reinforced plastic, and when projection is performed in a radial direction from the center shaft toward the rotor magnet, an angle between a direction of carbon fiber in the carbon-fiber-reinforced plastic and a direction of the center shaft is 45°. | 12-13-2012 |
| 20130009523 | ELECTROMECHANICAL DEVICE, ROBOT, AND MOBILE UNIT - An electromechanical device includes: a rotor including a center axis, a permanent magnet arranged on a first cylindrical surface along an outer periphery, and first and second magnet side yokes arranged at both end parts, of the permanent magnet; and a stator including an electromagnetic coil arranged on a second cylindrical surface along an outer periphery of the permanent magnet, and a magnetic sensor arranged opposite the permanent magnet with the first magnet side yoke located between the magnetic sensor and the permanent magnet. The first and second magnet side yokes are configured in such a way that a magnetic flux density on a surface opposite to the permanent magnet, of the second magnet side yoke on the side where the magnetic sensor is not arranged, is smaller than a magnetic flux density on a surface opposite to the permanent magnet, of the first magnet side yoke. | 01-10-2013 |
| 20130020900 | ELECTROMECHANICAL APPARATUS, ROBOT, AND MOVING BODY - An electromechanical apparatus includes: a rotor including a central shaft and permanent magnets disposed around a cylindrical surface along an outer circumference of the central shaft, and a stator including hollow electromagnetic coils disposed around a cylindrical surface along an outer circumference of the permanent magnets and a pipe member having a hollow cylindrical shape and disposed between the permanent magnets and the electromagnetic coils, wherein the pipe member is made of a carbon fiber reinforced plastic, and the carbon fiber reinforced plastic is formed by weaving carbon fiber bundles formed of bundled carbon fibers. | 01-24-2013 |
| 20130026861 | ELECTROMECHANICAL DEVICE, AND MOVABLE BODY AND ROBOT USING ELECTROMECHANICAL DEVICE - An electromechanical device includes a rotor having a magnetic back yoke with a cylindrical shape, and at least one rotor magnet arranged along an outer periphery of the magnetic back yoke in a cylindrical manner, a stator having at least one air-core magnetic coil arranged along an outer periphery of the rotor in a cylindrical manner, and a coil back yoke with a cylindrical shape disposed on an outer periphery of the magnetic coil arranged in a cylindrical manner, and a casing adapted to cover the stator and the rotor, wherein at least a part of the casing is formed of carbon fiber reinforced plastic. | 01-31-2013 |
| 20130033208 | PWM CONTROL CIRCUIT AND PWM CONTROL METHOD - The PWM control circuit includes a polarity determination unit, a full wave rectification unit, an adjustment unit that generates an adjusted waveform signal by adjusting waveform of the full wave rectification signal, and a carrier signal generating unit that generates a fixed frequency carrier signal. The PWM control circuit further includes a comparator that generates an original PWM signal by comparing the adjusted waveform signal and the carrier signal, and a PWM waveform shaping unit that generates a first PWM signal for the positive polarity section and a second PWM signal for the negative polarity section, by shaping the original PWM signal according to the polarity signal. | 02-07-2013 |
| 20130038181 | BRUSHLESS ELECTRIC MACHINE - The brushless electric machine includes a first drive member ( | 02-14-2013 |
| 20130062986 | ELECTROMAGNETIC COIL, CORELESS ELECTROMECHANICAL DEVICE, MOBILE BODY, ROBOT, AND MANUFACTURING METHOD FOR ELECTROMAGNETIC COIL - An α-wound coil is formed by winding ends on both sides of a predetermined intermediate position of a wire rod from air-core end edges of both the ends toward an outer circumferential side to form two coil portions and superimposing the formed two coil portions to be opposed to each other. When the electromagnetic coil is subjected to bending molding to be adapted to a shape along the cylindrical surface on which the electromagnetic coil is arranged, the circumferential length of a bent-molded shape along the circumferential direction of the cylindrical surface of a first coil portion arranged on the inner circumferential side is set to be smaller than the circumferential length of a bent-molded shape along the circumferential direction of the cylindrical surface of a second coil portion arranged on the outer circumferential side. | 03-14-2013 |
| 20130062990 | COIL BACK YOKE, CORELESS ELECTROMECHANICAL DEVICE, MOBILE BODY, ROBOT, AND MANUFACTURING METHOD FOR COIL BACK YOKE - A coil back yoke has laminated structure in which a plurality of annular components are stuck together along the axis direction of a cylinder, the annular component is formed of a soft magnetic body and has structure in which a plurality of divided annular components having a shape divided along the circumferential direction of an annular ring are stuck together in an annular shape, and, to prevent joint portions formed in the annular components by sticking together the divided annular components along the circumferential direction of the annular ring from lining up on a straight line parallel to the axis direction of the cylinder, the joint portions of at least a part of the plurality of annular components are stuck together while being shifted along the circumferential direction of the annular ring with respect to the joint portions of the other annular components. | 03-14-2013 |
| 20130082560 | CORELESS ELECTROMECHANICAL DEVICE, MOBILE UNIT, ROBOT, AND MANUFACTURING METHOD OF CORELESS ELECTROMECHANICAL DEVICE - A coreless electromechanical device includes permanent magnets provided in a first member, M (M is an integer number equal to or more than two) phases of α-wound air core electromagnetic coils provided in a second member, and a coil back yoke provided in the second member, wherein the electromagnetic coil has two effective coil regions that generate force for relative rotational transfer of the first member with respect to the second member and two coil end regions, and the coil end regions of at least the (M-1) phases of electromagnetic coils of the M phases of electromagnetic coils are bent toward an inner circumference side or an outer circumference side of a cylindrical surface containing the cylindrical region so as not to interfere with the coil end regions of the other phases of electromagnetic coils. | 04-04-2013 |
| 20140084759 | ELECTROMECHANICAL DEVICE, ROTOR USED FOR ELECTROMECHANICAL DEVICE, AND MOBILE UNIT AND ROBOT WITH ELECTROMECHANICAL DEVICE - An electromechanical device has a rotor and a stator provided on an outer circumference of the rotor. The rotor includes a rotation shaft, a plurality of rotor magnets cylindrically fixed and arranged along an outer circumference of the rotation shaft, and two magnet side yokes fixed and arranged in contact with side surfaces at both sides of the rotor magnets in a shaft direction of the rotation shaft. Overhang parts that suppress the rotor magnets with respect to radiation directions from a center of the rotation shaft toward the outer circumference and limit movements of the rotor magnets in the radiation directions are provided on surfaces of the magnet side yokes in contact with the rotor magnets. | 03-27-2014 |
