| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 318051000 |
Plural, diverse motor controls for different motors
| 39 |
| 318066000 |
Running-speed control
| 11 |
| 318101000 |
Starting and/or stopping
| 9 |
| 318045000 |
Mechanically coupled in fixed ratio of movement
| 8 |
| 318053000 |
Plural, diverse motor controls
| 8 |
| 318052000 |
Slipping and/or racing control for electric motors | 5 |
| 20080211434 | System, Method and Computer Readable Media for Reducing Wheel Sliding on a Locomotive - A system for reducing wheel sliding on a locomotive is provided for a locomotive including a plurality of axles. The system includes one or more speed inferring systems coupled to each axle to detect rotation of each axle and generate detection signals based upon detecting rotation of each axle. The detection signals include one of speed signals indicative of locomotive speed and non-rotating signals indicative of a non-rotating axle. More particularly, a main controller is coupled to each speed inferring system and is responsive to each detection signal. The main controller identifies non-rotating signals of the detection signals to initiate one or more alert signals of one or more respective non-rotating axles of the plurality of axles. Additionally, the main controller is coupled to an operator panel to alert a locomotive operator of an applied status of a locomotive parking brake in response to the alert signal. | 09-04-2008 |
| 20090026984 | Electric vehicle, and device and method of controlling slip thereof - A slip control device, a slip control method, and a vehicle provided with such a slip control device are provided, with which the vehicle can travel stably even on a slippery road surface maintaining good road holding. The device is provided with a torque directive control means ( | 01-29-2009 |
| 20130082626 | SYSTEM AND METHOD FOR TRACTION MOTOR CONTROL - A control method comprises determining wheel creep of a wheel operably coupled to a traction motor and limiting a rate of change of an excitation frequency applied to the traction motor to drive the wheel, based on the determined wheel creep. According to one aspect, the rate of change of the excitation frequency is limited if the wheel creep exceeds a wheel creep threshold. | 04-04-2013 |
| 20130241445 | Method of Operating a Dual Motor Drive and Control System for an Electric Vehicle - A method for optimizing the torque applied by each motor of a dual motor drive system of an all-electric vehicle is provided, the torque adjustments taking into account wheel slip as well as other vehicular operating conditions. | 09-19-2013 |
| 20150042245 | VEHICLE DRIVING SYSTEM AND VEHICLE DRIVING SYSTEM CONTROL METHOD - A motor controller obtains: a first motor target rotation number, a first motor actual rotation number of a first motor, a second motor target rotation number, and a second motor actual rotation number of a second motor; determines a first rotation number difference between the first motor target rotation number and the first motor actual rotation number of the first motor, and a second rotation number difference between the second motor target rotation number and the second motor actual rotation number of the second motor, determines first and second rotation control torques based on a smaller one of the first rotation number difference and the second rotation number difference; and determines a first motor torque of the first motor and a second motor torque of the second motor based on the first and second rotation control torques. | 02-12-2015 |
| 318105000 |
Plural, diverse or diversely controlled sources of armature (or primary) supply | 5 |
| 20080258655 | HYBRID MOTOR BOOST SYSTEM AND METHODS - An electrical system for a vehicle includes a power source providing electrical power to a first and a second electrical motor. Each motor has two or more windings, and each winding has a first end and a second end. A boost link such as a battery or capacitor is configured to store electrical energy for subsequent retrieval and use by either electrical motor. A first inverter circuit includes a first grouping of switches, wherein each of the first group of switches couples one of the first ends of the windings to the power source. A second inverter circuit includes a second group of switches, each coupling one of the second ends of the windings to the boost link. A controller is coupled to activate each of the first and second groups of switches to thereby allow the electrical energy to be placed on and retrieved from the boost link. | 10-23-2008 |
| 20090033251 | SERIES-COUPLED TWO-MOTOR DRIVE USING DOUBLE-ENDED INVERTER SYSTEM - Systems and apparatus are provided for an inverter system for use in a vehicle. The inverter system comprises a six-phase motor having a first set of three-phase windings and a second set of three-phase windings and a three-phase motor having a third set of three-phase windings, wherein the third set of three-phase windings is coupled to the first set of three-phase windings and the second set of three-phase windings. The system further comprises a first energy source coupled to a first inverter adapted to drive the six-phase motor and the three-phase motor, wherein the first set of three-phase windings is coupled to the first inverter, and a second energy source coupled to a second inverter adapted to drive the six-phase motor and the three-phase motor, wherein the second set of three-phase windings is coupled to the second inverter. A controller is coupled to the first inverter and the second inverter. | 02-05-2009 |
| 20090108778 | Mobile machine with one or more electric propulsion motors - A mobile machine may include one or more generator units, a plurality of electric propulsion motors, and a power-transfer system operable to transfer electricity from one or more of the generator units to one or more of the electric propulsion motors. The mobile machine may also include power-system controls that control the connection of the one or more electric propulsion motors to the power-transfer system. The power-system controls may selectively use a first motor-connection strategy for controlling when one or more groups of the electric propulsion motors are connected to the power-transfer system in series, and the power-system controls may selectively use a second motor-connection strategy for controlling when one or more groups of the electric propulsion motors are connected to the power-transfer system in series. | 04-30-2009 |
| 20100176755 | POWER CONVERSION SYSTEM AND METHOD - Power conversion systems and methods are provided for driving a plurality of motor loads, in which an autotransformer receives AC input currents and provides a plurality of multiphase outputs at a non-zero phase angle relative to one another, and the individual multiphase outputs are provided to corresponding motor drives with rectifiers to convert the multiphase outputs to DC electrical power, and inverters to convert the DC power to AC to drive corresponding motor loads. | 07-15-2010 |
| 20150069933 | Method of Operating a Variable Speed Motor in a Laundry Treatment Apparatus - A method of operating a laundry treatment apparatus, in particular a washing machine, a laundry dryer, a heat pump laundry dryer or a washing machine having a drying function, is provided. The apparatus includes a control unit controlling the operation of the treatment apparatus, a laundry treatment chamber for treating laundry, a detector unit for detecting at least one operation parameter (T_inv) of the treatment apparatus, and a first variable speed motor unit adapted at least to drive the treatment chamber, and/or a compressor having a second variable speed motor unit for circulating a refrigerant fluid through a refrigerant loop of the laundry treatment apparatus. The method includes selecting a predetermined power supply modulation mode for operating at least one of the first and second motor unit in dependency of the at least one detected operation parameter (T_inv), and operating at least one of the first and second motor units in an operating cycle by applying or executing the selected predetermined power supply modulation mode. | 03-12-2015 |
| 318085000 |
Synchronizing or phasing control | 5 |
| 20080218103 | Load driving method - A load driving device controls two motors by PWM signals. When a standard duty ratio of the PWM signals is 50% and a level of a drive instruction is the standard duty ratio, the standard duty ratio are output to the respective motors to provide a reverse phase relationship that the PWM signal of the standard duty ratio does not overlap. A continuous off-period and the standard PWM signal output when the level of the drive instruction is lower than the standard, and the continuous on-period and the standard PWM signal output when the level of the drive instruction is higher than the standard are changed over at the ratios corresponding to the level of the drive instruction. | 09-11-2008 |
| 20080246422 | Method for Controlling a Mechanically Communicated Electric Motor - A method for controlling a mechanically commutated electric motor, wherein the rotational angle of the output of said motor is determined by means of detection of the change in back electromotive force, when the electric motor commutates, and wherein the power supply to the electric motor is halted after a predetermined number of detected commutations. | 10-09-2008 |
| 20110260656 | LOAD DRIVE SYSTEM, MOTOR DRIVE SYSTEM, AND VEHICLE CONTROL SYSTEM - Provided is a small-sized load drive system which, even with three three-phase inverters, significantly reduces noise regardless of control duty ratio. The load drive system includes three-phase inverters | 10-27-2011 |
| 20140292232 | MOTOR CONTROLLER FOR SYNCHRONOUSLY CONTROLLING MULTIPLE MOTORS - A motor controller includes: a converter for converting an alternating current to a direct current; a first inverter for converting the direct current in a direct-current link of the converter to an alternating current for driving a first motor; a second inverter for converting the direct current in the direct-current link to an alternating current for driving a second motor; a power-failure detection unit for detecting a power failure on the side with the alternating-current power supply; and a command creation unit for creating a drive command for each of the first inverter and the second inverter when no power failure has occurred, while creating a drive command for the first inverter and also creating a drive command for the second inverter by using position feedback information of the first motor driven according to the drive command for the first inverter, when a power failure has occurred. | 10-02-2014 |
| 20150061547 | Locking and Synchronizing Controller for Hall-sensor Driven Motors - Disclosed embodiments include a method for locking and synchronizing Hall-sensor driven motors electronically. A programmable integrated circuit microcontroller is positioned between the Hall-sensors and the motor drivers. The microcontroller is programmed to receive signals from the Hall sensor, mitigate the errors introduced due to uneven magnetization and sensor misalignments, and then synchronize/lock the angle and speed of the motors such that the motors operate as if on a common shaft. | 03-05-2015 |
| 318049000 |
Motors electrically connected in cascade or tandem | 3 |
| 20090033250 | Power unit - A power unit which makes it possible to reduce power transmitted from a prime mover to a driven part via an electrical path, to thereby increase the efficiency of driving the driven part. A first rotating machine of the power unit inputs and outputs energy between a stator and first and second rotors thereof, via magnetic circuits formed by generation of a rotating magnetic field, and the rotating magnetic field, and the rotors rotate while maintaining a linear relation in which respective differences in rotational speed between the rotating magnetic field and the second rotor, and between the second and first rotors are equal. The rotors are mechanically connected to a prime mover and a transmission, respectively. A second rotating machine of the power unit is mechanically connected to a drive part without via the transmission, and electrically connected to the stator. | 02-05-2009 |
| 20090153080 | AC power driving apparatus - An AC power driving apparatus includes at least a DC input end, a DC motor, a plurality of AC output coils, a plurality of AC motors, a power chargeback device and a plurality of wires. The DC input end is connected to one side of the DC motor through the wires to supply driving power to the DC motor. The DC motor has another side connecting to one AC output coil through the wires to output AC power to one AC motor connected to another side of the AC output coil. The AC motor drives another AC output coil connected to one side thereof to generate amplification to be output. Thereby the another AC output coil is able to supply power to another AC motor to provide driving power. | 06-18-2009 |
| 20100019701 | Mutually cross-interlocked multiple asynchronous AC induction electrical machines - For mutually cross-interlocked multiple asynchronous AC induction electrical machines of the present invention, wherein the applicable operating characteristic curves of the asynchronous AC induction electrical machines include the asynchronous AC induction electrical machine of various operating characteristics, wherein when they are provided for the individual operation in different loading conditions, it is characterized that the cross interlocked electrical machine can be used to increase or decrease the rotational speed of the individual operation. | 01-28-2010 |
| 318041000 |
Having electrical synchronizing interconnections | 3 |
| 20090284189 | REGULATOR AND METHOD FOR REGULATING A CONTINUOUSLY VARIABLE ELECTRICAL GEARBOX - A continuously variable electrical gearbox has a rotatable rotor, a stator, an interrotor with a first and a second cage conducting first and second magnetisation currents. A regulator has a decoupling network connected in series with the gearbox having as input parameters: set values for the first and second magnetisation current levels, set values for the first and second torque between the rotor and interrotor and interrotor and stator and as output parameters: rotor current and stator current, a recording device for recording first and second magnetisation currents and a feedback system for feedback of first and second magnetisation currents as input parameters from the decoupling network. Rotor current and stator current are determined from the input parameters: set values for the first and second magnetisation current levels, set values for the first and second torque, first and second magnetisation currents are recorded and fed back to the decoupling network. | 11-19-2009 |
| 20120074876 | APPARATUS AND METHOD FOR OPTIMIZING CURRENT USE DURING CONTROL OF MULTIPLE MOTORS - A method for is disclosed for using pulse-width modulated (PWM) signals in the control of a plurality of electric motors or of at least one electric motor with multiple windings. The method comprises steps of: measuring the current being drawn by each of said electric motors; transmitting signals corresponding to the current being drawn said plurality of motors to a central controller; transmitting from said central controller signals corresponding to the amount of current to be drawn by each motor, whereby the relative phases and durations of said signals are distributed according to a predetermined protocol; and repeating steps (a) through (c) while said electric motors are in operation. The distribution of PWM signals defines the total current drawn from said source of electricity as a function of time. | 03-29-2012 |
| 20140070734 | METHOD AND SYSTEM FOR MOTOR SPEED CONTROL - This invention relates to methods and devices for motor speed control. The invention has particular application in the control of motors over packet networks. In embodiments of the invention, phase-locked loop principles are used to remotely control the speed of an electric motor over a packet network. The setpoint for the motor is supplied by arriving timestamps from a speed-mapped variable frequency source. The shaft speed of the motor is measured with a tachometer with its output proportional to the motor speed. Any deviation of the actual speed from the setpoint is amplified by the power amplifier whose output drives the motor. Speed control over packet networks allow smoother operation of a process, acceleration control, different operating speeds for each process recipe, compensation for changing process variables, slow operation for setup purposes, adjustments to the rate of production, accurate positioning, and control torque or tension of a system. | 03-13-2014 |
| 318098000 |
Load control | 3 |
| 20120146556 | DRIVE ARRANGEMENT FOR THE MOTOR-DRIVEN ADJUSTMENT OF AN ADJUSTABLE ELEMENT IN A MOTOR VEHICLE - Described herein is a drive arrangement for the motor-driven adjustment of an adjustable element in a motor vehicle, the drive arrangement having two electrical drives and a control device, the drives, in the fitted state, acting in the same way on the adjustable element and having a substantially identical configuration, apart from tolerance-related discrepancies. The control device has a power controller which, in the fitted state, during the motor-driven adjustment of the adjustable element, subjects the electrical power that is output respectively to the two drives to closed-loop control, for the purpose of compensating for the tolerance-related discrepancies, in such a way that an identical electrical power consumption is established for both drives. | 06-14-2012 |
| 20090243518 | MOTIVE POWER OUTPUT DEVICE, VEHICLE EQUIPPED WITH THE DEVICE, AND CONTROL METHOD FOR MOTIVE POWER OUTPUT DEVICE - A torque command for a first motor is set by setting a maximum torque restriction and a minimum torque restriction in a range, where the sum of the torques output from the first and second motors to a driving shaft be within a range from 0 to a required torque, the sum of the electric powers input from or output to the first and second motors be within a range of input and output restrictions of a battery, and the torque of the second motor be within a range from a value smaller than 0 by the permissible maximum amount of change to the sum of the permissible maximum amount of change and the previous torque command. A torque command for the second motor is set so that the required torque is output to the driving shaft within a range of the input and output restrictions of the battery. | 10-01-2009 |
| 20150145442 | CONTROL DEVICE AND CONTROL METHOD FOR HYBRID VEHICLE POWER UNIT - A power unit includes a first rotating electrical machine and a second rotating electrical machine as prime movers. The first rotating electrical machine, the second rotating electrical machine and a drive wheel are respectively connected to a ring gear, sun gear and carrier of a planetary gear mechanism. When a temperature of a permanent magnet of the first rotating electrical machine becomes close to a temperature at which demagnetization occurs, an output of the first rotating electrical machine is reduced, and an output of the second rotating electrical machine is increased. Thus, the total output of the power unit is kept. | 05-28-2015 |
| 318038000 |
Plural linear-movement motors | 3 |
| 20080309260 | Shaft Type Linear Motor, Mounting Head and Component Mounting Device With the Linear Motor, and Position Detection Method for Shaft for Driving the Linear Motor - A shaft type linear motor including a stator in which plural hollow cylindrical coils are disposed so that the center through holes thereof are arranged linearly so as to form a shaft insertion hole; a driving shaft including permanent magnets, the same magnetic poles, the north or south magnetic poles, being disposed in the axial direction so as to be opposed to each other, and movably inserted into the stator; sensor units disposed in the axial direction of the stator so as to have a predetermined clearance therebetween and equipped with plural magnetic pole detection sensors that detect the magnetic field intensities of the permanent magnets and output magnetic field intensity signals; and a detection section for receiving the magnetic field intensity signals output from the magnetic pole detection sensors and for detecting the position of the driving shaft on the basis of the plural magnetic field intensity signals. | 12-18-2008 |
| 20150137712 | MULTI-ACTUATOR DESIGN AND CONTROL FOR A HIGH-SPEED/LARGE-RANGE NANOPOSITIONING SYSTEM - Multi-actuator system. The system includes at least two nano positioners having different ranges and bandwidths located in cascaded serial form to contact and move an object. A control system employs data-based control design to combine the at least two nano positioners so as to apportion actuation responsibilities among the at least two nano positioners so as to compensate for their coupled dynamics while moving the object. It is preferred to provide a separate controller for controlling separately each of the at least two nano positioners. Parameters of the separate controllers may be determined by minimizing output error. | 05-21-2015 |
| 20150303841 | LINEAR MOTOR CONTROL APPARATUS AND LINEAR MOTOR CONTROL SYSTEM - A linear motor control apparatus has: a plurality of coil units; a plurality of position detecting units for detecting positions of a plurality of trucks which move over the plurality of coil units; a plurality of deviation calculating units for operating deviation information as differences between the detected truck positions and a target position of the detected truck; a plurality of position control units for operating current control signals based on the deviation information; a plurality of current control units for supplying driving currents to the coil units based on the current control signals; and a switching unit for switching the position control units to which the deviation information is transmitted or switching the current control units to which the current control signals are transmitted. | 10-22-2015 |
| 318035000 |
Motors with diverse motions (e.g., reciprocating and rotary motors) | 1 |
| 20140239854 | DRIVE CONTROL DEVICE - A PWM signal generator section for generating a plurality of PWM signals with different phases to be respectively fed to a plurality of loads, and a phase difference setting section for setting phase differences among the PWM signals are provided. The phase difference setting section sets phase differences Δt_shift(n,n+1) calculated based on an effective current Ia(n) flowing to each of the loads, where the number of the loads is N, according to the equations below: | 08-28-2014 |
| Entries |
| Document | Title | Date |
|---|
| 20080238347 | Motor Control Device - A motor control device includes at least one operating unit that is provided corresponding to at least one motor to operate the at least one motor, and a control unit that, each time at least one control cycle arrives in which the at least one motor is operated, sets a manipulated variable of the at least one motor to the at least one operating unit that operates the at least one motor of which the at least one control cycle arrives. | 10-02-2008 |
| 20080272715 | Position detection and external driver multiplexing system for DC motors - A system and method is provided for improved monitoring and controlling of mechanically commutated DC motors. The system and method include DC motors, pulse-count driver circuitry for driving the motors, motor position sensing circuitry, and motor control circuitry. The system and method provide for improved motor current waveform sensing that is able to effectively reject false brake pulses, avoid erroneous processing due to fluctuating battery voltage levels, and reduce the sensitivity to variations in motor current signals due to dynamic motor load, manufacturing variation, system aging, temperature, brush bounce, EMI, and other factors. The system and method also include an improved ability to multiplex additional external motor drivers to the motor control circuitry, select between sequential and simultaneous drive modes using an SPI bit, and monitor the system controller for an error condition and simultaneously driver motors in response to the error condition. | 11-06-2008 |
| 20090001906 | METHOD AND APPARATUS FOR CONTROLLING ASYNCHRONOUS MOTORS - Methods and apparatus are provided for controlling first and second motors. A controller includes a processor supplying a control signal for driving the motors and a logic circuit coupled to the processor. The processor produces a first trigger coordinated with the rate of the first motor and a second trigger coordinated with the rate of the second motor. The logic circuit produces a third trigger from a combination of the first and second triggers. The processor includes a converter for sampling the currents of the motors in response to the third trigger. The processor further produces a modified pulse width in the first trigger if a period between the first and second triggers is less than a predetermined limit and directs the converter to consecutively sample the currents in response to the modified pulse width. | 01-01-2009 |
| 20090066270 | DEVICES, SYSTEMS, AND/OR METHODS FOR ELECTRICALLY COUPLING A HIGH VOLTAGE ELECTRIC MOTOR - Certain exemplary embodiments can provide a terminal box adapted to be releasably and/or operatively attached to a selected electric motor of a plurality of electric motors. The terminal box can be adapted to receive a plurality of electrical wires. The plurality of electrical wires can be adapted to convey electrical energy to the selected electric motor. | 03-12-2009 |
| 20090115355 | Electric Power Control Device, Electric Powered Vehicle Including the Same, and Method for Controlling Electric Power of Electric Powered Vehicle - A load on a vehicle is connected to first and second neutral points in first and second motor generators through a relay circuit and power output lines. A control device controls inverters depending on a requested voltage of the load on a vehicle such that a potential at the first neutral point becomes higher than a potential at the second neutral point by that requested voltage. | 05-07-2009 |
| 20100090624 | MOTOR CONTROL CIRCUIT - In some preferred embodiments, a motor control circuit | 04-15-2010 |
| 20120256566 | Industrial Control System with Distributed Motion Planning - An industrial control system provides motion control functions that may distribute motion planning tasks to capable motor drives and motion devices based on stored drive profiles. The profile-aware functions allow control programs to be used with motor drives that are both capable and incapable of executing a motion planning with automatic distribution of the planning tasks as appropriate. Coordination among different devices in the industrial control system when motion planning is distributed may be accommodated through peer-to-peer communication between drives and non-controller devices. | 10-11-2012 |
| 20130162177 | Method for Determining Proper Wiring of Multiple 3 Phase Motors in a Single System - A method for determining proper wiring of multiple three-phase motors in a refrigeration system is disclosed. The method may include energizing a plurality of three-phase motors with a first input phase rotation and recording performance data, energizing the plurality of three-phase motors with a second input phase rotation and recording the performance data, evaluating the performance data and determining if each of three-phase motors is properly wired, operating the refrigeration system in a normal mode if all of the three-phase motors are properly wired, or operating the refrigeration system in a less efficient mode if at least one three-phase motor is improperly wired. | 06-27-2013 |
| 20140117885 | MULTI-DRIVING DEVICE AND DRIVING CIRCUIT THEREOF - A driving circuit comprises three switch groups, each comprising a first switch, a second switch, a third switch and a fourth switch. The first and the second switches are coupled in series. The third switch is serially coupled to the fourth switch and coupled between the first and the second switches. An i | 05-01-2014 |
| 20140132185 | System And Method For Variable Speed Motor Control With A Single Control Signal - In a motor control system, a controller generates a single control signal for a motor control unit in a first electric motor and another motor control unit in a second electric motor. The motor control units in the first and second electric motors operate the first and second electric motors at a first rate in response to the control signal being at a first level. The motor control unit in the first electric motor operates the first electric motor at a second rate and the motor control unit in the second electric motor operates the second electric motor at a third rate in response to the control signal being at a second level, the third rate being different than the second rate. | 05-15-2014 |
| 20140292231 | CONTROL UNIT FOR ROBOTS - In a control unit for a robot, an inverter which drives a motor installed in a robot. A control circuit controls drive of the motor. A drive power circuit supplies DC power to the motor, and a control power circuit DC power to the control circuit. A backup power circuit supplies backup DC power to the control circuit when the DC power from the control power circuit to the control circuit is shut down. A first switch is arranged between the backup power circuit and the inverter, the first switch being selectively switched on and off to open and close. A first switch control section switches on the first switch such that the DC power in the backup power circuit is supplementarily supplied to the inverter when the motor is driven to be accelerated. | 10-02-2014 |
| 20160185232 | VEHICLE DRIVE DEVICE - A vehicle drive device that includes a rotary electric machine that serves as a drive force source for wheels; a speed change mechanism; a pump motor that serves as a drive force source for an electric pump that generates a hydraulic pressure to be supplied to a servo mechanism for the speed change mechanism; a case that accommodates the speed change mechanism; and a first inverter that controls the rotary electric machine and a second inverter that controls the pump motor, the first inverter and the second inverter being connected to a common DC power source, wherein: the first inverter and the second inverter are disposed in the case; and a first wiring member that extends from the DC power source is branched in the case to be connected to each of the first inverter and the second inverter. | 06-30-2016 |
| 20220134890 | MOTOR DRIVE DEVICE AND ELECTRIC VEHICLE SYSTEM - A motor drive device ( | 05-05-2022 |
