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7629756 |
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...
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7589481 |
Control device integrated dynamo-electric machine
In order to improve reliability, cost performance, and cooling property, a control device integrated dynamo-electric machine mounted to a dynamo-electric machine includes an inverter bridge...
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7583037 |
Mobile storage unit with holding brake and single status line for load and drive detection
The present invention is a mobile storage unit including an electric motor operably connected to wheels movably supporting the unit, and a motor brake operably connected to the electric motor. A...
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7583048 |
Controller for motor
A controller for a motor carries out field weakening control by using a simple construction to change the phase difference between two rotors, which are disposed around a rotating shaft, without...
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7583038 |
Motor-driving circuit and recording apparatus including the same
A motor-driving circuit drives a plurality of motors of different types. The motor-driving circuit includes a plurality of H-bridge circuits for outputting driving signals to the motors, a...
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7569999 |
Motor control device
A motor control device has a target speed generating unit for generating a generated target rotational speed, speed detecting units for detecting rotational speeds of each of the plurality of...
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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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7548032 |
Locomotive speed determination
A method and system for determining a ground speed for locomotives (e.g., 12, 14 ) of a train ( 16 ) comprising at least two locomotives for use in controlling an operation of the train. The...
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7548807 |
Method for steering a vehicle with superimposed steering
A method of steering a vehicle with a superimposed steering system, wherein a steering angle input by the driver and an additional angle (additional steering angle) is determined and wherein the...
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7535186 |
Methods and systems for controlling operation of electronicallly commutated motors
A method for resolving addressing conflicts between multiple electronically commutated motors communicatively coupled to a system controller is described. The method includes sending a command,...
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7525263 |
Control system
A master unit and a plurality of slave units are connected by way of a communication path. The master unit sends to the slave units timing signals generated by its own cycle signal generator by way...
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7521880 |
Recording apparatus
A recording apparatus including: (a) a recording head unit for performing a dot recording operation by activation of the actuators; (b) a main circuit for outputting a plurality of sets of drive...
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7518322 |
Operation circuit for a work vehicle
An operation circuit for a work vehicle drives an electromagnetic actuator by generating an operation signal corresponding to a switch operation and drives a work actuator in response to the drive...
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7519440 |
Output cam system and method
A position of a motion control axis is monitored and an output device responsive to the position of the motion control axis is controlled. The controlling further includes latching an electronic...
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7508145 |
Multiple simultaneous aisle access control for a mobile storage system
A mobile storage system includes movable storage units that can be positioned to selectively form an aisle between adjacent storage units. The storage units define a maximum aisle space that forms...
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7508148 |
Vehicle steering apparatus
A current sensor 8 a detects a motor current of a steering motor 5 which supplies a steering mechanism 1 with steering force corresponding to the steering amount applied to a steering wheel ...
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7503366 |
Electronic component feeding device
The invention provides a component feeding device where heat generation of a drive circuit is minimized and a printed board mounted with this drive circuit is miniaturized by forming an inexpensive...
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7498755 |
Brushed motor control with voltage boost for reverse and braking
A single low side power transistor switch is used to efficiently control a brushed motor in a forward rotational direction. A boost voltage power supply is used to supply voltage to the brushed...
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7489092 |
Method and apparatus for enhanced alert notification
A system, fan controller and method for enhanced alert notification. Embodiments provide an effective mechanism for utilizing system fans to create alert tones or messages, where fan speed...
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7486036 |
Power control apparatus, electrically powered vehicle and power control method of power system
When surplus power not charged to an electric storage is generated at the time of regenerative braking of a vehicle, a voltage is generated across first and second neutral points using a...
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7468587 |
All wheel drive vehicle
The present invention relates to the field of electric-motor-driven vehicles such as cars, motorcycles, scooters, electric-motor trains, etc. Embodiments of the invention seek to provide an...
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7463443 |
Reduced hardware control circuit device, with current loop for broad band hard disk drive applications
A reduced hardware control circuit device includes a current loop for broad band Hard Disk Drive applications. The current loop detects the value of the current flowing on the coils of a voice coil...
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7446491 |
Intelligent power management for actuators
A system and method is disclosed for intelligent power management of actuators such as those used in papermaking. Multiple power supply units are connected to a common power bus. The power bus is...
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7439695 |
Mechanical braking system for use on a vehicle having an electric propulsion system and automatic retard speed regulation
A mechanical braking system is provided for a vehicle having an electric propulsion system which is utilized for retard speed regulation. While the retard speed regulation is normally performed via...
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7417386 |
Electronic line shaft
A method and assembly for synchronizing machine operations, the assembly comprising a reference generator for generating a speed reference signal and a position reference signal, a plurality of...
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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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7391173 |
Mechanically decoupled capstan drive
A capstan drive includes a first capstan that moves a device on a carriage and a second capstan that receives a second rotary motion to move the carriage. A first power transmission has a driven...
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7388344 |
Multichannel pulse train transmitting apparatus
In the multi-shaft driving apparatus, position command pulse trains for servomotors are generated from a motor controller and supplied to motor drivers for the respective servomotors via a...
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7365504 |
Motor having multiple independent armature winding sets
A motor is provided that includes multiple sets of independent stator windings that are not magnetically coupled, which allows the motor to be driven by multiple independent current drivers, and...
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7355358 |
Configurable H-bridge circuit
In an implementation of a configurable H-bridge circuit, a high switch is connected to a voltage source and a low switch is connected to ground. The configurable H-bridge circuit includes a first...
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7332881 |
AC drive system for electrically operated vehicle
A drive system for an electric vehicle includes a motor for providing a drive torque and an electrically actuated brake for providing a braking torque to the motor. The system includes a controller...
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7327103 |
Driver and method for control of voice coil motor in disk drive
A driver for a voice coil motor in a disk drive includes a sensor that provides a sense current by sensing a coil current in the voice coil motor, a comparator that provides an error current by...
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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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7304444 |
Battery vehicle and method of controlling the same
A battery vehicle includes a battery configured to supply DC power, and first and second motors configured to drive first and second wheels in response to first and second motor drive powers,...
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7298111 |
Method and device for controlling a production unit
A method and a device for controlling a production unit in a production installation are specified, controlling referring to the controlling and monitoring of speeds of rotation or angles of...
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7288909 |
Electrical vehicle controller
The maximum frequency and the minimum frequency are extracted from frequencies corresponding to respective axle speeds. The minimum frequency is subtracted from the maximum frequency to achieve a...
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7282874 |
Alignment apparatus, exposure apparatus, and device manufacturing method
An alignment apparatus which moves a object comprises a first structure having a holding member which holds the object, a second structure having a magnet which constitutes a linear motor, the...
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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...
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7271554 |
Motor-driving circuit and recording apparatus including the same
A motor-driving circuit drives a plurality of motors of different types. The motor-driving circuit includes a plurality of H-bridge circuits for outputting driving signals to the motors, a...
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7248005 |
Dual motor arrangement and control method
A dual motor arrangement includes a first motor M 1 , a first MOSFET Q 1 constructed and arranged to control operation of the first motor, a second motor M 2 , a second MOSFET Q 2 constructed and...
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7221114 |
Conveyance control apparatus and image forming apparatus
A conveyance control apparatus controls an amount of movement of a carrier. A first encoder detects an amount of movement of the carrier and outputting a first signal. A second encoder detects an...
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7208894 |
Electric vehicle motor and control system with high efficiency regeneration
The present invention is an electric vehicle power system that uses multiple permanent magnet motor/generators connected in series or parallel and multiple battery step switching. Motor, torque and...
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7208892 |
Power management system for a floor care appliance
A floor care appliance is provided with an improved power management system for controlling the total amount of current provided to at least a first and a second load device of an appliance. The...
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7194321 |
Modular multi-axis motion control and driving system and method thereof
A modular multi-axis motion control and driving system includes a control board having a DSP and Flash ROM; a plurality of driver boards connected to the control board though a bus, each board...
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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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7164253 |
Motor drive control apparatus
On end of a reactor (L 1 ) is connected to a positive electrode of a battery (B 1 ) and the other end is connected to a power line via a transistor (Q 1 ) and to the ground via a transistor (Q 2 )....
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7157873 |
Systems and methods for reducing torque disturbance in devices having an endless belt
A system for reducing torque disturbance includes a motor mechanically coupled to an endless belt. The motor is operable to drive the belt, and the belt has a seam that causes a torque disturbance...
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7148635 |
Motor drive with synchronized timing
A motor control system for controlling a motor includes control logic and a motor controller. The control logic is operable to generate a control signal at a first periodic time responsive to a...
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7132809 |
Fan-controlling system to control a plurality of fans with different pulse width modulation signals
A fan controlling system applicable in an electronic system having a plurality of fans is disclosed. The fan-controlling system includes a first signal generating module and a second signal...
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7126309 |
Motor
The electric machine of the present invention comprises a first coil group containing a plurality of coils and a magnet group. The first coil group is classified into M phase sub coil groups, with...
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