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8183812 |
Synchronous oscillating fan system for livestock shelter
A synchronous fan system is provided which intermittently calibrates the fans by rotating periodically the fans each to a common stop position.
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8174230 |
Drive unit
A switch section includes a common terminal connected to a terminal at one end of each of a pair of motors, a first terminal connected to a terminal at the other end of one of the motors and a...
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8130478 |
Power limiting system for multiple electric motors
A power limiting system for multiple electric motors includes an electrical power generating component, such as an alternator, and a plurality of motor controllers connected to an electrical bus....
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7956558 |
Automatic traction control for two separately excited motors utilizing a single electronic control
An automatic traction control system is provided for an electric or hybrid-electric vehicle. The automatic traction control system may be used with vehicles using two separately excited motors...
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7944157 |
Dual ring dedicated drive control system for medium voltage variable frequency drives
The present invention provides a motor drive system that is substantially more robust than those of the prior art. Generally, the motor drive system provides a redundant communication topology with...
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7893636 |
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...
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7821218 |
Universal apparatus and method for configurably controlling a heating or cooling system
A system controller is provided that includes a communication network for transmitting and receiving information from an installed blower motor controller, and a removable memory device connected...
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7746011 |
Vehicle seat, in particular a motor-vehicle seat
The invention relates to a vehicle seat, in particular for a motor vehicle, and equipped with a central control unit, motors, peripheral motor control devices each associated to one motor and...
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7723932 |
Propulsion system
A propulsion system for a vehicle is provided. The propulsion system includes a first traction drive system and a second traction drive system. The first traction drive system includes a heat...
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7671548 |
Electric drive system
An electric drive system comprising several electric drives, each of which comprises an electric motor, and a control system which is arranged to control said several electric drives and comprises...
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7656107 |
Control circuit for an arrangement having at least two direct current motors that are connectable in parallel to a direct voltage system
The invention relates to a control circuit for an arrangement having at least two DC motors (10, 12), which can be connected in parallel to a DC voltage system (16, 18), in particular a circuit for...
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7589487 |
Method of selectable simultaneous/sequential motor drive in a multiple drive circuit including failure detection
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...
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7560881 |
Electric drive fuel control system and method
An electric drive fuel control system and method for controlling a total drive torque supplied to a fuel metering pump includes a first main drive motor, a second main drive motor, and a backup...
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7561829 |
Motor control device, image forming apparatus, and motor control method
A motor control device includes a velocity detection unit, a motor control unit, a phase difference detection unit, and a correction value calculation unit. The velocity detection unit detects each...
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7514895 |
Method and device for synchronously controlling multiple printing presses or multiple units in printing press
A method and a device for synchronously controlling multiple printing presses or multiple units in a printing press can reduce power consumption and improve durability of motors and motor bearings....
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7402965 |
DC common bus self-protection method and system
A system and method in accordance with the present technique for protecting motor drives from damage due to misconfiguration while coupled to a common DC bus, comprises sensing electrical operating...
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7394629 |
Motor overload tripping system and method with multi-function circuit interrupter
A technique is provided for controlling operation of motors of different sized or ratings. Components used to apply and interrupt current to the motors may be shared in control devices for the...
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7323844 |
Circuit and method for control of a stepper motor
A circuit for the control of a stepper motor having a rotor configured as a permanent magnet and a stator configured of at least first and second energized excitation coils enclosing the rotor....
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7294980 |
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...
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7282873 |
Mutual active cancellation of fan noise and vibration
A multi-fan apparatus and method incorporates mutual active cancellation of fan noise and/or vibrations. The multi-fan apparatus includes two or more fans circuits, each comprising a fan, a fan...
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7248004 |
Cooling fan, in particular for motor vehicles
A radiator blower, in particular for motor vehicles, is indicated that comprises a plurality of individual fans (11, 12), each having an electrical drive motor (13, 14), and a plurality of switches...
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7187142 |
Motor drive with velocity noise filter
A drive unit for controlling a motor includes a position feedback device and a velocity noise filter. The position feedback device is operable to generate a position signal relating to a position...
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7183735 |
Drive unit for controlling drives in machine tools or production machines
A drive unit for controlling drives of machine tools or production machines includes a signal electronics unit, a startup/diagnostic unit, and an interface between the signal electronics unit and...
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7145299 |
Power window control system
A master controller installed in a master controller box and slave controllers installed in car doors to open and close window glasses of a car are connected by a single wire to each of slave...
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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...
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6969961 |
Method for controlling a rotation speed of a slave drive, a corresponding controller and a corresponding machine
A method for controlling the rotation speed of a slave drive is described, where a reference rotation speed and a reference position is provided to a controller. The controller determines an...
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6943521 |
Motor drive, motor drive control method, and component attaching device
In a motor drive device having a plurality of driver units for driving motors and a command generator for giving a command to the driver units which are connected in serial communication, there is...
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6911752 |
Concatenated motor assembly
A concatenated motor assembly for providing rotational power that includes a continuous rotatable shaft cooperating with a first motor module assembly. The first motor module assembly communicates...
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6903522 |
Simple load-driving circuit capable of driving plural loads according to given priority order
A load-driving circuit capable of driving a plurality of loads based on a priority order endowed therewith is provided. The load-driving circuit comprises a first load 3, a first driving switch 1...
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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...
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6806660 |
Motor controlling serial communication device and motor driver
A motor controlling serial communication device includes an upper controller having a first IC and a first connector, and motor drivers having second ICs, second connectors and third connectors....
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6791294 |
Servo control system
There is provided a serial transmitting section for serially transmitting a command frame 100 which is sent from a host controller 1 to a positioning type servo amplifier 30 and a command follow-up...
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6748162 |
Ventilation system for a motor vehicle
A ventilation assembly for a motor vehicle comprising first and second motor fan units (1, 2) and a control device (5) adapted to vary the ventilation power (P1+2) developed by the assembly formed...
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6731089 |
Flexible and compact motor control module based on the can communication network
The present invention relates to a flexible and compact motor control module based on the Controller Area Network (CAN) communication network. More specifically, the present invention relates to a...
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6686712 |
Motor network control system
A motor network control system is provided which is capable of reducing the wiring length of a power cable and in which upon replacement of a motor or an inverter of a specific motor unit, no...
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6624608 |
Indicating instrument for a vehicle
In an indicating instrument for a vehicle including a step motor and a stopper unit for stopping a pointer at a zero position, a memory for pre-storing a zero-level electric angle as a correction...
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6624601 |
Control device for plurality of rotating electrical machines
A control device for a plurality of rotating electrical machines has a single current control device with an inverter, gate driver, and a motor controller, which supplies a control current to each...
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6580244 |
Active damping and backlash control for servo systems
Two motors are used to provide motion control in a transport drive system. A primary motor, or a primary and secondary motor, provides primary power for accelerated motion. PWM signals are used to...
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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...
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6522096 |
Control circuit for a robot power supply
A mechanism controller for controlling power to motors of a mechanism having several motors, such as a robot. Each motor has a resolver for indicating the motor position. A driver unit is...
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6476570 |
Device and process for controlling the motor drives of textile machines
A device and a process for controlling the motor drives (121) of textile machines, comprising at least one “encoder” (101), capable of controlling the number of revolutions of each motor (121), and...
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6356041 |
Master three-phase induction motor with satellite three-phase motors driven by a single-phase supply
A motor system utilizes a master three-phase induction motor driven by a single-phase power supply which the motor has six-windings connected in a symmetrical double DELTA or double WYE...
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6353296 |
Electronic driver circuit with multiplexer for alternatively driving a load or a bus line, and method
An electronic system (101/102) for use in a car has an electronic control unit (10) and, in the alternative, either a passive load (11) or an active logic (12) attached thereto. The control unit...
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6348774 |
Method for controlling several stepping motor modules with prior loading of ramp data
In a method and device for controlling several stepping motor modules in printing or copying machines, sets of ramp data are centrally calculated in a computer in a calculation phase and are...
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6313591 |
Delay time modeling filter for cascaded regulator structure
A control system controls the movement of an object based on desired position data. The control system includes a first regulator configured to regulate the position of the object, a feed forward...
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6307346 |
Induction motor load limiting for power steering applications
A power steering system and induction motor load compensation algorithm or processing method for use in a vehicle. The power steering system comprises a power supply, a power steering motor, a...
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6157148 |
Contactorless multi-motor controller for battery-powered vehicles
A contactorless multi-motor controller is described which comprises a contactorless pump motor starter and a contactorless, reversible traction motor controller. The two controllers are mutually...
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6114818 |
Motor control apparatus
A motor control apparatus, which can control the speeds of a plurality of motors with nearly no speed variations until the final target speed is reached, includes a target speed setting circuit for...
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6072287 |
Polyphase AC machine controller
A number N of AC machines, such as motors or generators, are independently controlled by a control system having 2N+1 phases, having N orthogonal sets of phase components. In a particular...
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6020695 |
Three-phase generator boost circuit
A three-phase generator boost circuit for augmenting the back electromotive force produced by a spindle motor of a disk drive is disclosed. First and second nodes provide normal connection to a...
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