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7138782 |
Motor control system and method of the same
The present invention provides a motor control system and method thereof. The motor control system comprises a motor controller and a compensation device. The motor controller is used for...
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7129665 |
Control apparatus for feed driving system
A control apparatus for a machine that can be operated at high precision in a stable control state is provided by driving a movable body with control parameters suited to the mechanical state. A...
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7102317 |
Method and apparatus to process an analog encoder signal
A method and apparatus to process an analog encoder signal. The apparatus includes an analog encoder pattern generating unit, an analog encoder pattern storage unit, a digital/analog converting...
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6995538 |
Rotational direction detecting apparatus for a three-phase brushless DC motor
A region judging circuit judges an electric angle region of a three-phase brushless DC motor based on an output signal of a resolver. A latch timing output circuit determines an optimum latch...
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6384598 |
Inductive position sensor having multiple receiving geometries
Described is an inductive position sensor, in particular for a motor vehicle, which has an oscillator circuit that generates a periodic alternating voltage signal and couples into an exciting coil,...
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6239571 |
Resolver
A resolver comprises excitation windings for receiving excitation signals and a detection winding for outputting a detection signal. Displacement of a passive member provided with the excitation...
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6013999 |
Stepper motor control that adjusts to motor loading
A system and method are provided for controlling a stepper motor having a rotor and a multi-phase stator. Sinusoidal command signals define a commanded position of the motor's rotor. An actual...
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5867023 |
Converter circuit for rotary transformer sensing devices
A converter circuit for converting an alternating signal representing continuous rotary position into a further signal representing discrete rotary position samples the polarity of an envelope of...
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5329216 |
Multi-shaft driving apparatus and fluid rotary apparatus
A multi-shaft driving apparatus includes a plurality of motors each for rotating one of a plurality of shafts to be synchronously rotated, an encoder, provided for each motor, for detecting a...
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5221882 |
Motor servo apparatus
Where T 1 is a period of a dynamic operation range of a phase comparative waveform of a motor servo apparatus, and a period T 0 of a reference phase signal is measured, the reference phase signal...
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5204603 |
Open circuit detection for a pulsed resolver position sensing system
An auxiliary resolver position tracking (RPT) system for an industrial robot includes a resolver excitation and monitoring system which is powered by an uninterruptable power supply which includes...
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5189353 |
Resolver system
A resolver system includes a resolver having an annular rotor, and an annular stator arranged around the annular rotor in spaced relationship thereto. The rotor and the stator are arranged such...
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5173696 |
Control circuitry using electronic emulation of a synchro signal for accurate control of position and rate of rotation for shafts
The invention herein disclosed is a digital circuit which emulates a synchro signal in a synchro-resolver follower system for precise control of shaft position and rotation at very low rotational...
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5027047 |
Half angle mechanism for a heliostat
An improved heliostat device for an electrooptical system in which a mirror is gimbaled in two axes for line-of-sight direction and stabilization. A half angle drive system is connected to the...
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4978900 |
DC sine cosine servo system
A DC to DC sine/cosine positioning servo system has an electro-mechanical DC to AC converter. The latter includes a DC torquer, having a rotor with respective windings for receiving two DC input...
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4970450 |
Deriving rotational rate and angular position with a function generator
Angular position and rotation rate of a function generator having stator windings and rotor windings are determined by first amplitude modulating a carrier oscillation to form a sine signal and a...
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4928046 |
Multiple rotational position sensor
A multiple rotational position sensor includes a stator winding provided to a stator mounted to a casing and a rotor having a rotor winding provided to a rotor shaft mounted for rotation to the...
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4906909 |
Analog electronic control differential transmitter
A linear, analog, synchro control differential transmitter for implementing he common synchro CDX function whereby a scaled linear analog voltage is used as input instead of a mechanical shaft...
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4855744 |
Angle digitizer
A system for producing a digital representation of the value of an angle θ, typically a phase angle, from two analog input quantities representative of A sin θ and A cos θ, where A is an...
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4667138 |
Multiplexed synchro driver
An improved drive control circuit is disclosed for enabling the multiplexed drive of synchro receivers. A zero crossing detector is coupled to sense the zero crossings of a signal driving the...
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4598289 |
Control device for a synchro receiver
A control device suitable for synchros comprising three stator windings. The device comprises four circuit branches with the inputs of the first and the second branches interconnected to receive a...
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4492901 |
Control system for synchronizing combination press line
A control system for synchronizing a combination press line comprised of a transfer press and a double-action press. The transfer press is set as a master press and the double-action press as a...
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4455519 |
Torque receiver controller
The disclosure describes a device for continuous analog position control of multiple torque receivers by a single low power synchro signal source. The device provides continuous control of the...
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4430640 |
Step data to synchro converter
A step data to synchro converter for coupling one of a plurality of different step data transmitters to one of a plurality of different synchro receivers. The output of the step data transmitter is...
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4428053 |
Adaptive compass and north stabilization drive system
This system accepts compass outputs from a wide variety of compass output devices such as stepper and synchro devices having different coupling ratios, supply voltages and carrier frequencies. The...
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4358722 |
Speed detector using resolver
In a speed detector having a fixed frequency oscillator for producing two-phase sine waves to excite two-phase exciting windings of a resolver, first and second multipliers for multiplying the...
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4357566 |
Transducer system with velocity signal generation
To generate a signal having at all times an amplitude directly proportional to the velocity of relatively moving members, a plurality of phase displaced position indicative signals are first...
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4346334 |
DC Servomotor system
An automatic motion or position control DC servomotor system in which a load-driving axis driven by a DC motor to be controlled in one rotary mechanism is rotated synchronously with, or following...
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4342952 |
Synchro stabilizer circuit
A circuit for overcoming variations in the output signals from a synchro device resulting from a.c. supply voltage variations includes means to provide a pulse train in which the pulse widths are...
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4328483 |
Multiplexed-demultiplexed synchro demodulation apparatus
The outputs of a three-wire synchro are applied to a multiplexer which provides the multiplexed synchro outputs to an amplifier and demodulator. The demodulated synchro outputs are applied to a...
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4325013 |
Electrical tracer control system utilizing sine wave resolution
A control for a profiling machining tool, and a method for controlling such a tool. The machine tool includes a sensing head which moves along a template or pattern to produce a signal that causes...
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4264852 |
Follower device with differentiated speeds for gyrocompasses with mechanical suspension
A detector responsive to an angular offset between a gyrosphere of a gyrocompass and a tilt ring, forming part of a gimbal mounting therefor, controls a follower motor coupled through a reduction...
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4254369 |
High accuracy shaft angle linear DC voltage conversion using low accuracy devices
In order to provide high accuracy shaft angle to linear DC voltage conversion using low accuracy devices, a linear synchro is excited by a 2.5 KHZ square wave which is power buffered, the square...
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4247810 |
Angle to bipolar analog converter
The control system uses shaft angle controlled synchro resolver devices for producing reversible polarity signals related to the variable shaft angle position and independent of variations in the...
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4193059 |
Attitude indicator comparator warning system
The indications of attitude indicators at two different indicating locations that are indicating the same parameter but actuated from different sources, are monitored for the same indication by...
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RE30161 |
Apparatus measuring relative velocity of movable members including means to detect velocity from the position encoder
A transducer coupled to a motor shaft provides both position and velocity information for use in a closed loop control system. The transducer includes a disk with deposited metallic parallel...
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4151452 |
Synchro drive
An arrangement for controlling a plurality of synchro receivers from a single command position. The system requires very little power relative to the torque produced in the controlled synchros. The...
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4138661 |
Attitude indicator having expanded scale
A roll and pitch servomechanism for use in an attitude indicator is shown having an expanded scale in which a nonlinear electrical circuit is combined with a nonlinear mechanical indicator to...
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4103215 |
Torque repeater self-driver
A device employing the inherent self-torquing properties of a torque repeater to position its rotor. In the present invention, the torque repeater or synchro may have three stator windings and an...
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4095159 |
Electronic apparatus for automatic closed loop positioning of mobile members associated with an electromagnetic transducer with two pairs of windings
This invention relates to an electronic apparatus for automatic positioning and distance measurement of mobile members. The apparatus according to the invention comprises a rotary electromagnetic...
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4093903 |
Apparatus for extending the linear signal range of a rotary transformer type device
The linear signal output range of a rotary transformer type device, such as a sine/cosine synchro, is considerably extended beyond its normal 45° linear range by electronic circuit means....
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4084121 |
Solid state repeater for three wire synchro with selectable phase and frequency adjustment
The instant invention relates to a repeater for processing signals from a three wire synchro to control carrier phasing and frequency, while retaining identity of the angular information. The solid...
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4067007 |
Adaptive compass drive system
A radar system having an adaptive compass drive capable of operation over a wide variety of compass outputs and supply voltages and frequencies. For compass outputs in the form of multi-phased...
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4039165 |
Derived rate circuit for aircraft
The circuit derives a rate signal from an a.c. signal proportional to attitude displacement provided, for example, from the synchro pickoff of a vertical gyroscope or an inertial navigation system,...
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4011440 |
System for generating an angular rate signal from an angular position signal utilizing a constant amplitude-variable carrier phase signal
The instant invention relates to turn-rate signal generating circuitry for interrupting slaving of the directional gyro and roll erection of the vertical gyro in a heading, attitude and reference...
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3995205 |
Vehicle maneuvering control system
A maneuvering control system particularly for use in controlling a vehicle such as a submarine or surface craft, which utilizes both manual and automatic control. Electrical signals in accordance...
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3984748 |
Turn-rate system for gyroscopic devices including means for generating the rate signals by electrically processing gyroscope shaft angle
The instant system describes a heading and attitude reference system for an aircraft in which slaving of the directional gyro to the magnetic compass and roll erection of the vertical gyro is cut...
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3961212 |
Integral servomechanism
An integral servomechanism is shown that mounts a synchro receiver in the form of a control transformer, a torque motor, an isolation transformer and associated electronic circuitry integrally...
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3958179 |
Wide band AC modulated control networks
An electric impedance network for AC carrier frequency control systems which provides optimal arithmetical symmetry in frequency response with respect to the carrier frequency, characterized by...
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3914759 |
Selsyn digital transducer
A selsyn adapted for operation as a digital transducer. The three phase winding of the stator is connected as a primary. The rotor, having a single phase winding, is connected as a secondary. A...
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