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7560888 |
Electromechanical actuator including redundant, dissimilar position feedback
A relatively small, lightweight actuator includes a plurality of motors, an actuation element, a translation member, and a plurality of position sensors. The motors each supply a drive force to the...
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7526693 |
Initial decision-point circuit operation mode
A circuit that includes a controller and at least one control I/O pin. When the controller is placed into an initial state, the controller initializes the circuit into an initial operation mode....
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7437202 |
System and method for control scheduling
A system and method for controlling a device such that device operates in a smooth manner. The system may switch between control architectures or vary gain coefficients used in a control loop to...
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7420348 |
Drive apparatus
Optical disc drives designed for reduced power consumption switch the supply voltage in three stages between first, second, and third power supplies. The reduction in power consumption that is...
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7420350 |
Methods and apparatus for an active front steering actuator
An active front steering system includes a motor controller configured to compute a position error from a commanded position value and an actual position value, and then enter one of two modes—a...
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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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7155298 |
Device and method for generating and/or editing NC programs or NC tables
In a device and a method for generating and/or editing NC programs, where in a programming mode, input fields for machining data and selection lists belonging to the input fields and including...
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7122989 |
Multiple speed mover assembly
A mover assembly ( 16 ) that moves or positions an object ( 12 ) includes a mover output ( 226 ), an actuator ( 230 ), and a control system ( 18 ). The mover output ( 226 ) is connected to the...
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7098622 |
Programmable power supply with dual mode cross over clamps
A power supply programmable for a constant current mode and a constant voltage mode and selectively operable in either mode. Respective circuits associated with each of a constant voltage loop and...
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6975087 |
Closed-loop control system
A control system for operating a device. The control system comprises a plurality of command elements generating command signals and a control element having a plurality of control modes. Each...
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6838855 |
Method and apparatus for controlling motor
In controlling a motor in a device which drives a mechanism using the motor as a power source, in executing driving, an ideal profile of the driving is generated in accordance with a target...
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6791293 |
Sensorless control device for synchronous electric motor
The invention provides a synchronous motor sensorless controller which drives a synchronous motor without use of a rotational position sensor. The controller has a relative position counter 4 ...
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6762745 |
Actuator control providing linear and continuous force output
Methods and apparatus for controlling an actuator to provide linear and continuous force output to a user of a force feedback device. To provide continuous and smooth force output in a zero...
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6757129 |
Magnetic disk storage apparatus
In a magnetic disk storage apparatus, when a drive current of the voice coil motor is small, the head drive control circuit executes the linear drive mode under which the voice coil motor is driven...
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6741052 |
Post-automatically determined user-modifiable activity performance limit apparatus and method
In a control system ( 10 ) having a learning mode ( 20 ) such that performance limits can be automatically determined for subsequent use during normal operating modes ( 40 ), one or more user...
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6597142 |
Apparatus and method for setting control parameters of machining apparatus
An apparatus for setting control parameters of a machining apparatus. The setting apparatus includes a storage unit for storing a set of control parameters for each of a plurality of machining...
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6430465 |
Abbe error correction system and method
The present invention preferably employs non-contact, small-displacement, capacitive sensors to determine Abbe errors due to the pitch, yaw, or roll of a near linear mechanical stage that are not...
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6389325 |
Apparatus including a user interface for the control of a machine tool
An apparatus for the control of a machine tool includes, for the processing of a workpiece, several separate processing units that can execute definite tasks simultaneously and independently of one...
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6384566 |
Motor combination system and method for operating as an induction motor or a stepping motor
A motor combination system with operating method for operating as an induction motor or a stepping motor is disclosed. The disclosed system basically encompasses a switch device, an induction motor...
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6337553 |
Circuit arrangement and method for operating and electrical motor
A circuit arrangement with a digital controller for operating an electric motor and a method for starting an electric motor are disclosed. Electric motors require a considerably higher current...
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6178286 |
Adaptive tape drive control in a video recorder
A video recorder capstan drive motor is controlled for slow-motion, freeze-frame and similar operations by setting a rate of acceleration or braking. A speed parameter is measured during an initial...
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6163120 |
Simple back emf reconstruction in pulse width modulation (PWM) mode
A circuit and method for reconstructing the back emf of a floating coil of a polyphase dc motor in PWM mode is provided. The floating coil is coupled to a first capacitor through a floating phase...
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6094020 |
Disk drive utilizing Bemf of spindle motor to increase VCM voltage during seeks
A disk drive is connectable to a power supply having a fixed DC voltage. The disk drive includes a voice coil motor (VCM) and a spindle motor having a plurality of windings and a rotor rotatable at...
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6057662 |
Single motor control for substrate handler in processing system
A substrate handler for use in a chamber in a vacuum processing system has a single motor for controlling the substrate handler's rotation and extension functions. The single motor is connected to...
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5977736 |
Superposition control method using numerical controller
A superimposing control method using a numerical control device, capable of starting and terminating a superimposing control even during movement, without the need of waiting for the adjustment of...
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5973471 |
Micromanipulator system with multi-direction control joy stick and precision control means
A micromanipulator system is comprised of a microscope, a micromanipulator for three-dimensionally manipulating a fine instrument in the field of the microscope, image pick-up device for picking up...
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5909095 |
Bemf zero-crossing detection system of a multiple-phase motor
The invention relates to a method for detecting a threshold-crossing of a back electromotive force (bemf) measured in one phase of a multiple-phase motor, the one phase being set at a high...
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5900704 |
Process and system for controlling an electrohydraulic pressure supply for an auxiliary power device for an automotive vehicle
A process and a system for controlling an electrohydraulic pressure supply for an auxiliary power device of an automotive vehicle in which a hydraulic pump system is operated by means of an...
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5892347 |
Tape drive with high performance gain amplifier using radio frequency dielectric heating
A power amplifier (18) for driving a brushless DC motor (22) includes a processor (40) which receives a signal indicative of motor situational usage and generates a mode state signal indicative of...
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5821651 |
Flywheel controller
A flywheel controller for commutating a stator of a flywheel is disclosed wherein the flywheel controller includes a sensing unit to sense the position of a rotor and for creating a rotational...
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5798927 |
Apparatus and method for coordinating the movements of stages in a multi-stage multi-rate positioner system
A multi-rate positioner system (50) receives unpanelized positioning commands from a database subsystem (64), profiles the commands (72) into a half-sine positioning signal, and further processes...
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5798626 |
Servo motor control
An amplifier circuit which communicates over a two way bus with a CPU having a profile generating computer for defining at least one profile and which supplies a control signal to a motor. The...
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5751585 |
High speed, high accuracy multi-stage tool positioning system
A multi-rate positioner system (50) receives unpanelized positioning commands from a database storage subsystem (64), profiles the commands (72) into a half-sine positioning signal, and further...
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5744926 |
Servo motor positioning control and position recording chip device
A chip device for positioning control and position recording of a servo motor. The chip device can be operated in two modes: a first mode, and a second mode. In the first mode, the chip device can...
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5744925 |
Control method and apparatus for two-wire motor actuator
An actuator for automotive HVAC control is coupled to a remote controller by two wires. The controller applies power to the actuator in a high current or a low current mode. A variable resistance...
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5723963 |
Apparatus and method for controlling transition between PWM and linear operation of a motor
A motor drive control circuit for operation in both linear and PWM modes includes a switchably connected compensation network. The compensation network has a capacitor that provides control loop...
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5614803 |
Inverter control apparatus
In order to reduce distortion of a real-current wave form and to suppress substantial transient fluctuation of the current and torque during changeover from a regeneration running condition to the...
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5543696 |
Position control for hybrid servomechanisms
A hybrid servomechanism includes a speed control, a rotor position control and a brushless motor. When enabled, the position control commands a stationary stator mmf vector, allowing the motor's...
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5523664 |
System for alleviating fatigue in a seat
Method and system for alleviating a fatigue in a seat, wherein there are provided, in combination, a lumbar support mechanism for moving a lumbar support plate towards and away from a lumbar part...
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5448147 |
Selectable feedback control system
A control system includes a first estimation section for estimating a first state variable of a plant object such as a semiconductor wafer temperature control arrangement on the basis of a control...
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5448145 |
Feedforward control method for a servomotor
A feedforward control method for a servomotor designed to improve with the command follow-up property of a servo system. In this method, the average value of move commands for N number of...
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5289095 |
Fuzzy switching logic for servo systems
An actuator'rate is controlled by a rate servo and the actuator's position is controlled by a position control. The position control can be a position servo or a mechanical brake. Selection of...
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5278480 |
Door opener control with adaptive limits and method therefor
A garage door operator has a microcomputer based control which is programmed to measure door position from full open position by counting motor revolutions and to determine motor speed and...
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5270626 |
Method of controlling multitasking excavator system
A method of controlling an excavator driven by an electronic control system having an input/output board for executing a transformation, scaling and filtering function of signals supplied from a...
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5270621 |
Procedure controlling the motor of a crane
The present invention relates to a procedure for selecting the mode of controlling the motor of a crane, or an equivalent lifting apparatus, when at least two alternative modes of controlling the...
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5262707 |
Positioning control method and apparatus
A positioning control method and apparatus in which a fine movement mechanism is moved without exceeding a movable area so that positioning of a large amount of displacement can be attained with...
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5260632 |
Position control system
A positioning control for linearly displacing an object (31) has a direct current motor (1) and a gear (2,21) for converting rotary into linear motion, a current supply (4) of current pulses having...
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5223776 |
Six-degree virtual pivot controller
An active virtual pivot hand controller using motors to control reflective forces and torques. Degree of freedom parameters, stops, and reflective force rates may be easily modified without...
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5202611 |
Synchronization control system for servo motors
There are provided servo motors and servo control units for n shafts. A setting device previously sets parameters for servo control individually for each of the n shafts and previously sets...
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5189354 |
Angular position selecting apparatus
A permanent magnet rotor is connected to an output shaft and has more than one pair of magnetic poles. A stator has three phases connected in Y-connection including a first phase, a second phase,...
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