Patent application number | Description | Published |
20110117484 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER AND ELECTROPHOTOGRAPHIC APPARATUS - An electrophotographic photosensitive member includes a photoconductive layer, an intermediate layer, and a surface layer. When Si+C atom density in the surface layer is represented by D | 05-19-2011 |
20110123914 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER AND ELECTROPHOTOGRAPHIC APPARATUS - The present invention provides an electrophotographic photosensitive member including a photoconductive layer, an intermediate layer made of hydrogenated amorphous silicon carbide on the photoconductive layer, and a surface layer made of hydrogenated amorphous silicon carbide on the intermediate layer, wherein a ratio (C/(Si+C); C2) in the surface layer is 0.61 to 0.75, and a sum of atom density of silicon and carbon is 6.60×10 | 05-26-2011 |
20110123915 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER AND ELECTROPHOTOGRAPHIC APPARATUS - The invention is an electrophotographic photosensitive member comprising a substrate, a photoconductive layer, an intermediate layer and a surface layer sequentially formed, wherein the intermediate contains silicon, carbon and hydrogen, a distribution of a hydrogen ratio which is a ratio of the number of hydrogen to the number of silicon, carbon and hydrogen in the intermediate has a maximum region, a largest hydrogen ratio in the intermediate is larger than a hydrogen ratio in the surface, the hydrogen ratio in the surface is 0.30 to 0.45, a distribution of a carbon ratio which is a ratio of the number of carbon to the number of silicon and carbon in the intermediate has a maximum and a minimum region, a carbon maximum region is 0.53 to 0.63, a carbon minimum region is 0.47 or more, and the maximum hydrogen region in the intermediate is partially superimposed on the minimum carbon region. | 05-26-2011 |
20110129776 | IMAGE-FORMING METHOD - An image-forming method is provided which enable high-quality images to be formed over a long time period. In the image-forming method, an electrophotographic photosensitive member is used having a surface layer formed of a hydrogenated amorphous silicon carbide in which a ratio of the number of carbon atoms to the sum of the number of silicon atoms and the number of the carbon atoms in the surface layer is 0.61 or more and 0.75 or less, and the sum of the atomic density of the silicon atoms and the atomic density of the carbon atoms in the surface layer is 6.60×10 | 06-02-2011 |
20110318678 | ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER AND ELECTROPHOTOGRAPHIC APPARATUS - An electrophotographic photosensitive member is configured such that the average value Hx_ave of the content of hydrogen atoms in a central portion area of a photoconductive layer in a cylindrically axial direction thereof, the content Hx of the hydrogen atoms at an arbitrary point in the central portion area, the average value Hy_ave of the content of the hydrogen atoms in an end area of the photoconductive layer in the cylindrically axial direction thereof, and the content Hy of the hydrogen atoms at an arbitrary point in the end area satisfy 10≦Hx_ave≦30, Hx12-29-2011 | |
20130077987 | ELECTROPHOTOGRAPHIC APPARATUS - An electrophotographic apparatus suppresses the unevenness of image density, even though the electrophotographic apparatus has no heater for an electrophotographic photosensitive member. The electrophotographic photosensitive member is arranged in the electrophotographic apparatus so that when the electrophotographic photosensitive member is equally divided into two regions in a cylindrical shaft direction, absolute values of a temperature dependence of photosensitive-member characteristics in the two regions are not the same, and when a region out of the two regions which has a smaller absolute value of the temperature dependence of the photosensitive-member characteristics is defined as a first region, and a region which has a larger absolute value of the temperature dependence of the photosensitive-member characteristics is defined as a second region, the change of a surface temperature of the first region becomes larger than the change of a surface temperature of the second region when an image is formed by the apparatus. | 03-28-2013 |
Patent application number | Description | Published |
20130007553 | TRANSMISSION SYSTEM AND ERROR CORRECTION CONTROL METHOD - There is provided an error correction control method of a transmission system on which a signal is transmitted from a first transmission apparatus to a second transmission apparatus, the error correction control method including: transmitting a signal for a mode change request to change an error correction mode from the second transmission apparatus to the first transmission apparatus; transmitting signals having a change timing value in a specific order with a specific period from the first transmission apparatus to the second transmission apparatus when the first transmission apparatus receives the mode change request; changing the error correction mode of the first transmission apparatus when the change timing value to be transmitted becomes a specific value in the first transmission apparatus; and changing the error correction mode of the second transmission apparatus in response to the change timing value received with the specific period from the first transmission apparatus. | 01-03-2013 |
20140036926 | TRANSMISSION APPARATUS AND TRANSMISSION METHOD - A transmission apparatus includes a detector to receive a multiplexed signal including a plurality of signals having different frame periods and detect switching information included in the multiplexed signal; a sorter to sort a plurality of pieces of detected switching information into one or more groups according to types of corresponding signals; an adjuster to adjust an order of transferring the switching information sorted, according to a period with which the switching information is received; a transfer unit to transfer the plurality of pieces of switching information sorted, based on a result of the adjustment performed by the adjuster; a controller to generate path setting information to set transmission paths of the signals based on the plurality of pieces of switching information transferred from the transfer unit; and a switch unit to set the transmission paths based on the path setting information generated by the controller. | 02-06-2014 |
20150086196 | TRANSPORT APPARATUS AND METHOD OF TRANSMITTING MONITORING CONTROL SIGNAL - A transport apparatus configured to transport a main signal received via one of a plurality of ports to any of the plurality of ports, the transport apparatus includes: a plurality of main signal processing circuits configured to extract a monitoring control signal from the main signal, the plurality of main signal processing circuits being provided to correspond to the plurality of ports, respectively; a monitoring controller configured to receive the monitoring control signal from the plurality of main signal processing circuits; and a serial interface configured to connect the plurality of main signal processing circuits with the monitoring controller on a ring-shaped bus to transfer a serial frame, wherein the serial frame has a mapping field to which the monitoring control signal is mapped. | 03-26-2015 |
Patent application number | Description | Published |
20130235459 | OPTICAL DEVICE - An optical device | 09-12-2013 |
20140071511 | WAVELENGTH SELECTIVE SWITCH - In a wavelength selective switch, respective values are set to satisfy an expression (θ | 03-13-2014 |
20140268305 | WAVELENGTH SELECTIVE SWITCH - A wavelength selective switch includes: a port array that includes an input port for inputting a signal light and an output port for outputting the signal light which are arranged in a first direction; a dispersive element that disperses the signal light in a second direction; a condensing element that condenses signal lights; a light deflection element that deflects the signal lights toward the output port; a first optical system that matches a beam waist position of the signal light incident onto the condensing element with a front focus of the condensing element in the optical axis direction, in a first plane that extends in the first direction; and a second optical system that shifts the beam waist position of the signal light incident onto the condensing element from the front focus in the optical axis direction, in a second plane that extends in the second direction. | 09-18-2014 |
20140321796 | WAVELENGTH SELECTIVE SWITCH - A wavelength selective switch includes a light input and output part in which light input/output ports are arranged in a predetermined direction, the light input/output ports including a first port for inputting light, a second port for outputting the light, and at least one third port for inputting or outputting the light, a wavelength dispersive element optically coupled to the light input and output part, and a phase modulation element which includes a plurality of pixels performing phase modulation and diffractively deflects an optical path of the light arriving from the first port via the wavelength dispersive element by presenting a diffraction-grating-shaped phase modulation pattern, and the light input/output ports are arranged so that a 1 | 10-30-2014 |
20140368916 | DISPERSIVE DEVICE AND WAVELENGTH SELECTIVE SWITCH - A dispersive device has a beam expanding optical system which includes first and second prisms each having a pair of faces inclined relative to each other, and expands light containing a plurality of wavelength components by passing the light through each of the faces of the first and second prisms; and a dispersive element which emits the light expanded by the beam expanding optical system, at different diffraction angles by the respective wavelength components. A direction of variation of an output angle of the light emitted from the beam expanding optical system due to temperature change is configured to be a direction to suppress variation of the diffraction angles of the respective wavelength components emitted from the dispersive element due to the temperature change. | 12-18-2014 |
20150078748 | WAVELENGTH SELECTIVE SWITCH - A wavelength selective switch includes a wavelength dispersive element that divides a beam input from an input port, a beam director that deflects a wavelength component, and a free space optical system that optically couple a input/output unit, the wavelength dispersive element, and the beam director. The free space optical system converts a shape of the beam such that a size extending in a second plane is relatively smaller than a size extending in a first plane, and to have a long axis and a short axis in a third plane. The long axis is inclined with respect to the first direction. The beam director includes a beam directing region in which a plurality of beam directing elements are arranged. The beam directing region deflects the respective wavelength components toward the predetermined output port. The beam directing region is provided to correspond to the shape of the beam. | 03-19-2015 |
Patent application number | Description | Published |
20110002041 | OPTICAL ELEMENT, METHOD FOR PRODUCING THE SAME, AND DISPLAY APPARATUS - An optical element having an anti-reflection function includes a base having a main surface, and a plurality of projecting or recessed structures arranged on the main surface of the base at a fine pitch equal to or less than the wavelength of visible light, wherein the main surface of the base, the main surface having the structures thereon, has hydrophilicity, and a contact angle of the main surface of the base, the main surface having the structures thereon, to pure water is 30° or less. | 01-06-2011 |
20110128629 | OPTICAL ELEMENT AND METHOD FOR MANUFACTURING OPTICAL ELEMENT - An optical element with an antireflection function is provided with a substrate having a surface and a plurality of structures formed from convex portions or concave portions and arranged in large numbers on the surface of the substrate with a minute pitch less than or equal to the wavelength of the visible light, wherein the modulus of elasticity of the material forming the structures is 1 MPa or more, and 1,200 MPa or less, and the aspect ratio of the structure is 0.6 or more, and 1.5 or less. | 06-02-2011 |
20110249333 | RETARDATION FILM, METHOD OF PRODUCING THE SAME AND DISPLAY DEVICE - A retardation film is provided and is formed by laminating a thermoplastic norbornene resin film, an anchor layer, an alignment film and a phase difference layer in this order. In this retardation film, the anchor layer is formed by applying an anchor material including a tri-, or more-functional acrylate monomer of 50 parts by weight or more and 90 parts by weight or less onto the thermoplastic norbornene resin film and then, drying and curing the anchor material with ultraviolet light. | 10-13-2011 |
20120070623 | MANUFACTURING METHOD OF LAMINATED BODY, STAMPER, TRANSFER DEVICE, LAMINATED BODY, MOLDING ELEMENT, AND OPTICAL ELEMENT - A manufacturing method of a laminated body includes applying an energy ray curable resin composition on a base, and causing a rotation surface of a rotation stamper to come into close contact with the energy ray curable resin composition applied on the base during rotation, and irradiating the energy ray curable resin composition with energy rays emitted from one or a plurality of energy ray sources provided in the rotation stamper via the rotation surface so as to cure the energy ray curable resin composition, thereby forming a shape layer onto which concave and convex shapes of the rotation surface are transferred, on the base. | 03-22-2012 |
20120100346 | TRANSPARENT CONDUCTIVE ELEMENT, INFORMATION INPUT APPARATUS, AND DISPLAY APPARATUS - A transparent conductive element is provided and includes a conductive layer having a first surface and a second surface and a medium layer formed on at least one of the first surface and the second surface. In the transparent conductive element, at least one of the first surface and the second surface is a wave surface with a wavelength shorter than or equal to that of visible light; the ratio (Am/λm) of a mean peak-to-peak amplitude Am to a mean wavelength λm of the wave surface is 1.8 or less. The mean thickness Dm of the conductive layer is larger than the mean peak-to-peak amplitude Am of the wave surface. | 04-26-2012 |
20120243097 | OPTICAL ELEMENT, OPTICAL SYSTEM, IMAGING APPARATUS, OPTICAL INSTRUMENT, AND STAMPER - An optical system includes an optical element that has a surface on which a plurality of sub-wavelength structure bodies are formed; and an imaging device that has an imaging region which senses light via the optical element, wherein the surface of the optical element has one or two or more sections that scatter incident light and generate scattered light, and wherein a sum total of components of the scattered light reaching the imaging region is smaller than a sum total of components thereof reaching regions other than the imaging region. | 09-27-2012 |
20130220680 | PATTERN SUBSTRATE, METHOD OF PRODUCING THE SAME, INFORMATION INPUT APPARATUS, AND DISPLAY APPARATUS - A pattern substrate includes a substrate having a surface on which a first area and a second area are formed, and a pattern layer formed at the first area among the first area and the second area. The pattern layer is a wiring pattern layer or a transparent electrode, the first area has a convex/concave shape where a capillary phenomenon occurs, and the convex/concave shape includes an aggregate of a plurality of structures. | 08-29-2013 |
Patent application number | Description | Published |
20140246797 | TRANSFER MOLD AND MANUFACTURING METHOD FOR STRUCTURE - A transfer mold includes a body, a first layer, and a second layer. The body has a projecting-and-recessed surface. The first layer contains an inorganic material and is disposed on the projecting-and-recessed surface of the body. The second layer contains fluorine and is disposed on a surface of the first layer. The average of hardness values of the projecting-and-recessed surface on which the first and second layers are disposed is 30 Hv or higher. | 09-04-2014 |
20140247496 | OPTICAL UNIT, IMAGING DEVICE, ELECTRONIC APPARATUS, AND MASTER - An optical unit having an antireflection function includes a wave surface having a wavelength equal to or shorter than a wavelength of visible light. The wave surface has a curved plane which curves in a recessed shape between an apex portion and a bottom portion of the wave surface. An inflection point of an area of a cross section obtained by cutting through the wave surface in a plane perpendicular to a direction of vibration of the wave surface is positioned toward the bottom portion of the wave surface from a center of the vibration. | 09-04-2014 |
20150027759 | CONDUCTIVE ELEMENT AND METHOD OF MANUFACTURING THE SAME, WIRING ELEMENT, AND MASTER COPY - A conductive element includes: a substrate having a first wavy surface, a second wavy surface, and a third wavy surface; a first layer provided on the first wavy surface; and a second layer formed on the second wavy surface. The first and second layers form a conductive pattern portion. The first, second, and third wavy surfaces satisfy the following relationship: | 01-29-2015 |
20150062712 | OPTICAL ELEMENT AND MANUFACTURING METHOD THEREFOR, OPTICAL SYSTEM, IMAGING APPARATUS, OPTICAL INSTRUMENT, AND MASTER - An optical element includes an element main body and a plurality of sub-wavelength structures that is provided on a surface of the element main body. The sub-wavelength structures include an energy-ray-curable resin composition, and the element main body is opaque to energy rays for curing the energy-ray-curable resin composition. The surface, on which the plurality of sub-wavelength structures is provided, has a section in which scattered light is generated by scattering incident light, and intensity distribution of the scattered light is anisotropic. | 03-05-2015 |
20150085369 | LAMINATED BODY, IMAGING ELEMENT PACKAGE, IMAGING APPARATUS, AND ELECTRONIC APPARATUS - There is provided a laminated body, including a substrate and a structure layer which is provided on the substrate and has an anti-reflection function, in which the structure layer includes a plurality of structure bodies and an intermediate layer which is provided between the plurality of structure bodies and the substrate and, in which the intermediate layer satisfies a following relational expression (1). (2π/λ)·n(λ)·|d−d | 03-26-2015 |
20150273792 | PROTECTIVE FILM, LAMINATE, DISPLAY DEVICE, AND FILM-ATTACHING UNIT - There is provided a laminate that includes a protective film configured to include an adhesive layer, and a film-attaching layer configured to include an uneven surface to which the protective film is attached via the adhesive layer. The protective film has adhesion of 3 [N/25 mm] to 20 [N/25 mm] inclusive with respect to the uneven surface before pretreatment, and the protective film has the adhesion of 0.05 [N/25 mm] or lower with respect to the uneven surface after the pretreatment. | 10-01-2015 |
Patent application number | Description | Published |
20090015276 | PROBE ASSEMBLY AND METHOD FOR PRODUCING IT - A method of producing a probe assembly which uses thermal energy of a laser light for bonding a plurality of connection pads provided on a probe board and a probe disposed on each connection pad. In the neighborhood of at least one of the connection pads on the probe board, a dummy connection pad with no probe adhered is formed in order to uniform the thermal energy by irradiation of each bonding portion of each connection pad and the corresponding probe. | 01-15-2009 |
20090058441 | ELECTRICAL TEST PROBE - A probe for electrical test comprises a plate-shaped main portion having a base end to be attached to a support board and a tip end opposite the base end, and a probe tip portion arranged at the tip end of the main portion and having a probe tip to contact an electrode of a device under test, the main portion being made of a tenacity material. The main portion includes a conductive material extending from the base end to the tip end and at least part of which is buried within the tenacity material, and the tenacity material has higher resiliency than that of the conductive material while the conductive material has higher conductivity than that of the tenacity material. As a result, disorder of a signal provided via the probe is decreased without losing elastic deformation. | 03-05-2009 |
20100213956 | PROBE FOR CURRENT TEST, PROBE ASSEMBLY AND PRODUCTION METHOD THEREOF - A probe for current test comprising: a probe body having a plate-like connection portion whose end face becomes a connection face to a probe board; a solder layer formed on at least one side face of said connection portion; and a guide portion formed on the connection portion, penetrating the connection portion in its thickness direction from the one side face with the solder layer formed to the other side face, and when the solder layer is melted, capable of guiding a portion thereof to the other side face. | 08-26-2010 |
Patent application number | Description | Published |
20110292704 | SEMICONDUCTOR DEVICE AND POWER SUPPLY DEVICE - A power supply topology is used in which a transistor is provided on the side of an output node of a rectifying circuit. An inductor is provided on the side of a reference node, a resistor is inserted between the transistor and the inductor, and one end of the resistor is coupled to a ground power supply voltage of a PFC circuit. The PFC circuit includes a square circuit which squares a result of multiplication of an input voltage detection signal and feedback information (output voltage of an error amplifier circuit). The PFC circuit drives on the transistor when a detection voltage developed at the resistor reaches zero, and drives off the transistor when the detection signal reaches an output signal of the square circuit. | 12-01-2011 |
20140239831 | SEMICONDUCTOR DEVICE AND POWER SUPPLY DEVICE - A power supply topology is used in which a transistor is provided on the side of an output node of a rectifying circuit. An inductor is provided on the side of a reference node, a resistor is inserted between the transistor and the inductor, and one end of the resistor is coupled to a ground power supply voltage of a PFC circuit. The PFC circuit includes a square circuit which squares a result of multiplication of an input voltage detection signal and feedback information (output voltage of an error amplifier circuit). The PFC circuit drives on the transistor when a detection voltage developed at the resistor reaches zero, and drives off the transistor when the detection signal reaches an output signal of the square circuit. | 08-28-2014 |
20150230304 | SEMICONDUCTOR DEVICE AND POWER SUPPLY DEVICE - A power supply topology is used in which a transistor is provided on the side of an output node of a rectifying circuit. An inductor is provided on the side of a reference node, a resistor is inserted between the transistor and the inductor, and one end of the resistor is coupled to a ground power supply voltage of a PFC circuit. The PFC circuit includes a square circuit which squares a result of multiplication of an input voltage detection signal and feedback information (output voltage of an error amplifier circuit). The PFC circuit drives on the transistor when a detection voltage developed at the resistor reaches zero, and drives off the transistor when the detection signal reaches an output signal of the square circuit. | 08-13-2015 |
Patent application number | Description | Published |
20080309279 | MOTOR CONTROLLER - A motor controller includes: a notch filter arranged inside a control system; an oscillation frequency estimating section which estimates an oscillation frequency component in a motor; and a notch control section which controls a notch filter so as to change a notch frequency and a notch width. The notch control section changes a frequency between an oscillation frequency and a notch frequency set in a notch filter as a new notch frequency, while changing a notch width to a new notch width such that the notch width is larger after the change than before the change. | 12-18-2008 |
20100333010 | Motor Control Characteristic Evaluation Device and Motor Control Characteristic Presentation Method - An evaluation index selection section in which any evaluation index is selected from a plurality of evaluation indices of the control characteristics in the motor control system and which outputs selection information indicating the selected evaluation index; a relational data extraction section for extracting data related to the selected evaluation index from a data group of the motor control system based on the selection information; an evaluation value calculation section for calculating an evaluation value of the evaluation index based on the extracted data; and a display control section for displaying the calculated evaluation value on a display are included. | 12-30-2010 |
20110029137 | MOTOR DEVICES, AND MOTOR DRIVING SYSTEM AND INTEGRATED CIRCUIT DEVICE COMPRISING THE SAME - A motor device comprising a motor, and a drive control circuit for driving and controlling the motor, in which the drive control circuit includes a control unit for generating a control signal for controlling the rotation of the motor, a drive unit for driving the motor on the basis of the control signal, and a communication unit for making serial communications via a serial communication bus for transmitting serial data. This communication unit has an address generating function for generating and setting addresses. | 02-03-2011 |
20110031906 | MOTOR DRIVING DEVICE, INTEGRATED CIRCUIT DEVICE, MOTOR DEVICE, AND MOTOR DRIVING SYSTEM - A motor driving device according to the present invention includes: a serial communication unit that conducts communication through a serial communication bus, the serial communication bus including a serial data line through which serial data is transmitted and a clock line through which a clock signal is transmitted; and a drive control unit that controls a driving operation of a motor. The motor driving device is configured such that a clock signal received from the serial communication bus is used as a reference clock signal of the drive control unit. | 02-10-2011 |
20110221378 | MOTOR CONTROLLER - There are provided: a plurality of notch filters which are arranged inside a control system for feedback-controlling a moving operation of a moving section of a motor and attenuate signal components having near frequencies with a notch frequency at a center in an input signal; a plurality of oscillation extracting filters which are set with different frequency bands as being corresponded to the respective notch filters and extract oscillating components in the set frequency bands from a speed detection signal; and a plurality of notch controlling sections which are arranged with respect to the respective oscillation extracting filters and control the notch frequencies of the corresponding notch filters so as to decrease amplitudes of the oscillating components extracted by the oscillation extracting filters. | 09-15-2011 |
20130063064 | MOTOR CONTROL APPARATUS - There are provided a first notch filter disposed in a feedback control system, an oscillation extracting filter for outputting signal x | 03-14-2013 |
20130113409 | MOTOR CONTROLLER - There are provided: a plurality of notch filters which are arranged inside a control system for feedback-controlling a moving operation of a moving section of a motor and attenuate signal components having near frequencies with a notch frequency at a center in an input signal; a plurality of oscillation extracting filters which are set with different frequency bands as being corresponded to the respective notch filters and extract oscillating components in the set frequency bands from a speed detection signal; and a plurality of notch controlling sections which are arranged with respect to the respective oscillation extracting filters and control the notch frequencies of the corresponding notch filters so as to decrease amplitudes of the oscillating components extracted by the oscillation extracting filters. | 05-09-2013 |
20130175970 | CURRENT CONTROL GAIN ADJUSTING METHOD FOR PM MOTOR, CURRENT CONTROL METHOD, AND CONTROL DEVICE - The present invention includes a voltage applying step of applying an applied voltage including a DC component and a plurality of frequency components to a PM motor, a motor current detecting step of detecting a motor current flowing depending on the applied voltage, and a current control gain adjusting step of calculating a current control gain based on frequency characteristics of the applied voltage and the motor current. In this manner, a stable current control gain having a high current response can be adjusted within a short period of time. | 07-11-2013 |
20130181650 | MOTOR CONSTANT CALCULATING METHOD FOR PM MOTOR, AND MOTOR CONSTANT CALCULATING DEVICE - A motor constant calculating method for a PM motor according to the present invention includes a voltage applying step of applying an applied voltage including a DC component and a plurality of frequency components to a PM motor, a motor current detecting step of detecting a motor current flowing depending on the applied voltage applied in the voltage applying step, and a motor constant calculating step of calculating a motor constant of the PM motor based on the applied voltage and the motor current. | 07-18-2013 |
20140152202 | METHOD FOR CALCULATING MOTOR CONSTANT OF PERMANENT MAGNET TYPE SYNCHRONOUS MOTOR AND MOTOR CONSTANT CALCULATING DEVICE - A method for calculating a motor constant of a permanent magnet type synchronous motor according to the present invention includes: a voltage applying step of applying a voltage obtained by compositing a DC component and an AC component to a permanent magnet type synchronous motor while varying a frequency of the AC component; a current detecting step of detecting a motor current flowing according to the applied voltage; a phase difference calculating step of calculating a difference in phase between the AC component of the applied voltage and an AC component of the motor current; and a motor constant calculating step of calculating a motor constant of the permanent magnet type synchronous motor. In addition, in the motor constant calculating step, the motor constant is calculated based on the applied voltage and the motor current when the difference in phase becomes nearly 45 degrees. | 06-05-2014 |
20150064023 | MOTOR CONTROLLER AND MOTOR CONTROL METHOD - A motor controller of the present invention comprises units which obtain information indicative of a motor speed (ω) and information indicative of motor torque (T), an air flow calculation section which calculates an air flow (Q) of a fan based on the motor speed (ω) and the motor torque (T); and a speed command generation section which generates a speed command (ω*) of a motor such that the air flow (Q) coincides with the predetermined air flow command (Q*). | 03-05-2015 |