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| Number | Title | Issue Date |
| 8063589 | Drive system for multiple motors A drive system for multiple motors includes a first motor, a second motor, a motor drive power supply for supplying power to the first and second motors, a first motor drive amplifier, a second motor drive amplifier, a first overcurrent detection apparatus, and a se... | 11/22/2011 |
| 7637333 | Hybrid driving system for a motor vehicle Hybrid drive for a motor vehicle with a drive train, comprising a combustion engine and a vehicle transmission with variable gear ratio and a first and second electrical machine which can be operated both as a motor and a generator, each of which comprises a stator ... | 12/29/2009 |
| 7352141 | Device and method to monitor an apparatus An apparatus for monitoring and control of one or more electric motors, including a motor controller, equipped with a soft starter. The soft starter includes memory for storing operations and event data, as well as a human-machine interface for making the event info... | 04/01/2008 |
| 7289396 | Disk device A driver IC 1 has a bias terminal 20a via which a bias voltage fed from a microcomputer 2 to drive and control a loading motor 4 is fed in and a bias terminal 20b via which a bias voltage fed from a DSP 3 to dr... | 10/30/2007 |
| 7276865 | Power output apparatus, motor driving method and computer-readable recording medium having program recorded thereon for allowing computer to execute motor drive control A power output apparatus includes two motor generators, a DC power supply, a relay, three inverters and a control CPU. One of the motor generators includes three-phase coils. The DC power supply is connected via the relay between respective neutral points of the thr... | 10/02/2007 |
| 7275522 | Method and apparatus for controlling a valve, and method and apparatus for controlling a pump-nozzle apparatus with the valve A valve has a piezoelectric actuator with a valve element, a valve body and a valve seat. In order to control the valve, the valve element is moved into the valve seat from a position remote from the valve seat by means of a charging process at a prescribable first ... | 10/02/2007 |
| 7245100 | Multi-axis AC servo control system and method A multiple axis servo control implements a multi-tasking PWM control unit to provide PWM signals for multiple axes in a single unit. A time slice mechanism provides axis selection signals based on a system clock signal to permit control parameters of the selected ax... | 07/17/2007 |
| 7221115 | Method and apparatus for controlling multiplexed motors A control for stopping the rotation of the output shafts of a plurality of multiplexed motors configured in columns and rows with the first connector of each motor in a given column connected in parallel and with the second connector of each motor of a given row of ... | 05/22/2007 |
| 7180261 | Self-synchronous AC servo system for high-speed serial communication A self-synchronous AC servo system is used for high-speed serial communication and has multiple axes control. The system includes a computer sending command to master axis drive and slave axis drive through a transmission line. The master axis drive and slave axis d... | 02/20/2007 |
| 7164253 | Motor drive control apparatus On end of a reactor (L1) is connected to a positive electrode of a battery (B1) and the other end is connected to a power line via a transistor (Q1) and to the ground via a transistor (Q2). By PWM control of the transistors (Q1, Q | 01/16/2007 |
| 7145300 | Multi-axis AC servo control system and method A multiple axis servo control implements a multi-tasking PWM control unit to provide PWM signals for multiple axes in a single unit. A time slice mechanism provides axis selection signals based on a system clock signal to permit control parameters of the selected ax... | 12/05/2006 |
| 7135826 | Fan control system A fan control system. The system includes a plurality of fans, each having a control device. One of the fans is designated as a master fan and others are served as slave fans according to a specific designation method, wherein the control device of the master fan ac... | 11/14/2006 |
| 7126514 | Inverter control device and inverter control method An inverter control microcomputer 10 comprises AD converters 21–23, a selector control circuit 31, and a selector 32. The selector 32 selects three analog signals from among inputted seven analog signals in accordance with contro... | 10/24/2006 |
| 7088061 | Drive system for a group of machines A drive system powering a group of machines each fitted with a rectifying unit, wherein the inputs of the control devices of the machines' drive motors are interconnected by an electrical bus which implements a power exchange. The system enables swapping current fro... | 08/08/2006 |
| 7075416 | Automotive universal latch control implementation Latch control methods and systems include a latch that receives power from a motor associated with an H-bridge circuit. A sensor can be provided for monitoring the latch, wherein the sensor obtains latch feedback data from the latch. A microcontroller controls the l... | 07/11/2006 |
| 7038421 | Method and system for multiple servo motor control A system for control of a plurality of motors comprising: an inverter including at least three legs, with each leg including two series switching devices configured to receive a command from a controller. The system also includes a first motor operably connected to ... | 05/02/2006 |
| 7026778 | Numerical controller A data table stored in a numerical controller associates motors controlled by the numerical controller with information from sensors used by the motors. When the numerical controller is turned on, the contents of the data table are sent from the numerical control se... | 04/11/2006 |
| 7023151 | Switching device for controlling at least two motors A switching device for controlling at least two motors has a single converter, wherein the at least two motors are connected to the converter by a power line and a feedback line, respectively. At least one logic module is connected to the converter and evaluates sig... | 04/04/2006 |
| 7023169 | Method for changing speed of motor group A method for changing the speed of a motor group, in particular for starting or stopping it, the motor group comprising a plurality of squirrel-cage induction motors or synchronous motors and network converters arranged for their control, when the nominal supply pow... | 04/04/2006 |
| 6936989 | Pulse count motor control device A pulse count motor control device that connects to a central control unit through a first interface and to at least one motor through a second interface. A microprocessor integrated into the motor control device then allows it to directly monitor and drive the moto... | 08/30/2005 |
| 6933698 | Method of driving a servo motor with a built-in drive circuit Disclosed is a method of driving a servo motor with a built-in drive circuit in which a common rectifying circuit is provided on a distribution board to which a plurality of the servo motors with built-in drive circuits are connected, to thereby achieve a reduction ... | 08/23/2005 |
| 6914855 | Circuit for driving motor coils in stepping motors A circuit for selectively driving n motor coils associated with a plurality of stepping motors, wherein only (n+1) motor coil drivers are needed. A timepiece that utilizes such a circuit is also provided. ... | 07/05/2005 |
| 6856106 | H-bridge apparatus and method An apparatus has a first H-bridge having a first motor contact on a shared first side and a second motor contact on a second side. The apparatus also has a half H-bridge having a third motor contact on a third side, wherein the shared first side of the first H-bridg... | 02/15/2005 |
| 6841955 | Moving body drive control device A moving body drive control device characterized by mutually balancing a magnitude of driving force TK and a magnitude of braking force TB, both of the forces being generated by a motor, to approximate a moving speed of a moving body 100 to a target speed hig... | 01/11/2005 |
| 6815915 | Device system for multiple motors A device for supplying energy by means of a first DC voltage source e.g. in the form of a DC voltage bus, a drive system comprising several electric motors is connected to said DC voltage bus. The electric motors are comprised e.g. in a number of yarn feeding device... | 11/09/2004 |
| 6812657 | Motor control for two motors A load in an electrical apparatus is driven by two motors M1, M2. Switching means (R1, R2) switches the motors M1, M2 between: a series configuration, in which the motors M1, M2 are connected in series across a... | 11/02/2004 |
| 6680590 | Vibration motor and apparatus using the same A vibration motor obtains a FAST signal when r.p.m. of the motor is faster than reference speed, whereby an output-driving circuit is controlled by the FAST signal to omit parts of the powering periods of respective phases. The motor thus controls the r.p... | 01/20/2004 |
| 6653810 | Motor control system A motor controller circuit for controlling an electric motor in response to motor commands from a host controller. The controller circuit includes a motor driver circuit for providing motor driver signals to the motor in response to motor driver commands.... | 11/25/2003 |
| 6583591 | Circuit for operating a plurality of bi-directional motors The present invention provides a circuit for operating a plurality of bi-directional motors, each motor having a pair of terminals disposed across the motor. The circuit includes a common half bridge for providing one of power and ground to one of the pai... | 06/24/2003 |
| 6577095 | Brushless alternating current electric servo motor drive AC servo motor drives which allow several AC drives to be connected in parallel and allow for the connection and reconnection of AC servo motors to be accomplished primarily through a central processing unit (CPU). Thus, multiple AC servo motor drives may... | 06/10/2003 |
| 6404150 | Accessory motor drive power supply system for an electric vehicle An electric vehicle accessory motor drive power supply system (40) that utilizes a single power supply design to provide efficient variable speed motor control to both brushless and brush-type DC motors (42,44). The power supply system includes at least o... | 06/11/2002 |
| 6385522 | Brake control apparatus and method Brake control apparatus and includes an electric motor arranged to drive a wheel and a brake operable to apply a braking force to inhibit the rotation of the wheel. An input signal indicative of a desired angular velocity of the wheel is provided to the c... | 05/07/2002 |
| 6373204 | Apparatus and method for driving a plurality of induction motors A motor controller includes: a driver stage operable to provide voltage and current to a plurality of induction motors over a single power bus; and a control unit operable to monitor the current drawn from the driver stage and cause one or more of the ind... | 04/16/2002 |
| 6344719 | Motor driving apparatus for controlling plurality of motors with less motor driving units than motors The motor driving apparatus comprises a plurality of motors for displacing the position of the control object member, semiconductor switch pairs, a plurality of motor driving units for connecting the motors to the power supply and a control unit for ON/OF... | 02/05/2002 |
| 6281645 | Motor control system and image forming apparatus using the same A motor control system includes a processor having a clock output terminal for outputting clock pulses in desired cycles, a plurality of motors, and a plurality of motor drivers which are provided one for each motor and drive the corresponding motors on t... | 08/28/2001 |
| 6246192 | Electronic drive system In an electrical drive system an increased electromagnetic compatibility is achieved by used of AC rotating motors having no commutator and no slip rings as driving motors, whereby a simplified structure of the drive system and of the control of the drive... | 06/12/2001 |
| 6121735 | Actuator with start-stop operation The present invention relates to an electronically adjustable actuator for actuating a plurality of actuating elements, such as valves. A control unit is provided for generating actuating signals to cause each of the valves to move with one another in a s... | 09/19/2000 |
| 6028404 | Motor drive circuit system utilizing multiple DC power driving devices switchable between parallel, and series/parallel combinations At least two components that use DC power to drive at least two motors, such as DC armatures, field windings, etc., collectively referred to as DC driving devices, are connected together by switching components which can be operated to selectively connect... | 02/22/2000 |
| 6008597 | DC-motor driven vending machine having simplified controls A simplified wiring system for an electronically controlled vending machine of the type capable of vending multiple products out of columns, trays or other queuing means, wherein by employing DC motors and various novel circuits, one may reduce controller... | 12/28/1999 |
| 5898280 | DC shunt (or compound) motor pair capable of synchronous operation A pair of DC motors, each having a shunt-connected field winding, are interconnected such that current supplied to the shunt field winding of one of the motors is proportional to the armature current in the other of the two motors when the speed of the ot... | 04/27/1999 |
