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9035594 |
Boost converter control apparatus
A boost converter control apparatus for controlling a motor drive system which is provided with a boost converter disposed between an electric power converter and a direct current power supply,... |
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7911172 |
Machine position control device
An accurate load position control is made possible even when rigidity of a load drive system using a motor is relatively low. Load position signal xl is a present-position measurement value of a... |
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5500580 |
Integrated compliance servovalve
An integrated compliance electrohydraulic servovalve system connected to a load such as a simulated living being to provide more realistic movement thereto. The system includes a pressure... |
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4555757 |
Interface system for hybrid control loops
A system for interfacing a digital computer with an analog gimbal control loop rate integrating gyro for controlling the movement of inner and outer gimbaled elements is disclosed. The purpose of... |
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4387624 |
Device for increasing the tracking accuracy of an aiming system
The invention relates to a device for increasing the tracking accuracy of an aiming system for a gun or the like which includes a gun servo. The gun servo comprises a special stabilizing and... |
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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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4298833 |
Apparatus for damping operator induced oscillations of a controlled system
Apparatus for damping operator induced oscillations of a controlled system responding to an operator controlled signal (DEP) utilizing a lag-lead filter (14) for frequency and amplitude estimation... |
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4283665 |
Method and apparatus for eliminating ripple component from motor control loop
In a motor control circuit, a rotational speed detection signal containing a ripple component superimposed on a d.c. component is applied to both a low pass filter/phase lagging circuit and to a... |
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4221995 |
Linear motor drive system for continuous-path closed-loop position control of an object
A precision numerical controlled servo-positioning system is provided for continuous closed-loop position control of a machine slide or platform driven by a linear-induction motor. The system... |
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4184109 |
Position servo loop for robot or automatic machine
A nonlinear servo compensator for insertion in the position servo loop of a robot or automatic machine comprising a direct path with an operational amplifier and a second amplifier for summing the... |
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4128795 |
Device for damping the critical frequencies of a rotor suspended by a radial electromagnetic bearing
A device is disclosed for damping the critical frequencies of a rotor suspended by a radial electromagnetic bearing which has means associated therewith for detecting the radial position of the... |
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3727120 |
WIDTH CONTROLLED SAMPLIER PULSING A SAMPLE-HOLD THEREBY EFFECTING A LOW-PASS FILTER FOR A SAMPLE-DATA SERVO
Servo systems may be subject to disturbances if they respond to signals above a certain frequency, if for example, the frequency is related to the natural resonance of the mechanical portion of... |
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3492506 |
LAG-LEAD AC COMPENSATION CIRCUIT
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3470430 |
AIRCRAFT PITCH AXIS SERVO CONTROL INCLUDING NOISE ELIMINATION AND NONLINEAR COMPENSATION
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3436626 |
MASS CENTERING APPARATUS WITH MEANS TO SENSE MASS DISPLACEMENT FROM THE CENTER OF GRAVITY AND SERVO RECENTERING
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3275268 |
Automatic control for aircraft
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3246221 |
Servo controlled magnetic platform
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2870393 |
Thermionic servo-amplifier systems
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2832020 |
Synchro system and quadrature voltage eliminator therefor
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2735051 |
Title is not available
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2544643 |
Apparatus for compensating for frequency changes
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2466018 |
Vibratory strand reference apparatus with longitudinal component drive
The present invention ence apparatus, as is par apparatus for establishf Predetermined direction ment of a vibrating eleme As sV0 1'r1 in Patent 556,186, filed September ; inventor, there has... |
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2437313 |
Electrical servo system
13 Claims This Invention relates to electrical servo sys ters, and more particularly to improvements ii the art of stabilizing electrical servo systems o the type employing A.-C. control signals.... |
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2423438 |
Electrical follow-up motor control system
8 Claims. (Cl. * 1 This invention relates to a follow-up system in which a controlled element, such as a directional radiating antenna structure, is caused to follow the rotation of a... |
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2068490 |
Position control system
This invention relates, generally, to electrical control systems, and the invention has reference, more particularly, to a novel improved continu.ously operable electrical position control system... |