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5289367 |
Numerical control apparatus using fuzzy control
A numerical control apparatus for adaptively controlling a servo apparatus, wherein a load current (Ln) and a velocity (Vn) of a spindle motor (74) are used as a fuzzy input. In response to the...
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5282129 |
Control basic building block (CBBB)
A method of synthesizing a control system which provides for ideal properties of zero error in both transient and steady state with respect to both input command and external disturbance in an...
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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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5276390 |
System for hybrid position and force control
A hybrid position and force control system for a robotic manipulator. A displacement error signal of an end effector such as a robotic hand is multiplied by a pseudo-inverse of a matrix product of...
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5274313 |
Method and arrangement for actuating electromechanical transducers
The invention relates to methods and arrangements for actuating electromechanical transducers, in particular electric motors (3) having a voltage or a current, the optimum curve shape of which is...
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5274312 |
Method and apparatus for controlling a sliding elevator door
A method for controlling a sliding door system determines the masses and the frictional forces of all movably interconnected parts of the sliding door system. The system has a door leaf which is...
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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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5267144 |
Access method of an actuator and control apparatus therefor
A target moving distance of an actuator is provided and a acceleration time of the actuator suitable for the target moving distance are calculated on the basis of a preset equation. Then, a...
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5264768 |
Active hand controller feedback loop
An active hand controller system is provided wherein a feedback loop detects the position of a control stick to control a motor driving the control stick to thereby provide certain force feel...
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5254921 |
Abnormality detecting method for a servo system
An abnormality detecting method for a servo system capable of quickly detecting an abnormal condition even in a low rotation speed range is provided. While a digital servo control section (11-13)...
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5251681 |
Method and apparatus for optimizing planer mill output
A method and associated apparatus for selecting a target rate of board treatment by a woodworking tool, measuring the difference between the actual rate of board treatment by the woodworking tool...
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5250887 |
Feedback controller
A feedback controller inputs a reference signal instructing a controlled variable output from an object operated in accordance with a control signal and a feedback signal, to calculate the control...
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5248921 |
Servo motor control device
In a control device for controlling a servo motor driving a robot arm, a target position command signal is input to a first operation section, which generates a speed command value for the speed...
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5245528 |
Process control apparatus and method for adjustment of operating parameters of controller of the process control apparatus
A process control apparatus and a process control system for observing the waveform of the deviation between a set point which controls the process in a control loop and the process controlled...
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5245529 |
Two degrees of freedom type control system
A system for controlling a process system subject to an external disturbance by adjusting a process variable output by the process system to a given target variable. The system includes a target...
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5231341 |
Limiter circuit of servo motor control apparatus
A limiter circuit of a servo motor control apparatus can perform limiter control in the right direction or reverse, direction or in both directions of a motor therefore. There is provided a...
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5231616 |
Calibration of a cartridge handling device using mechanical sense of touch
Disclosed is an optical disk handling system having two control systems to provide the motions necessary to move optical disk cartridges form storage holding cells to an optical drive. During...
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5229696 |
Servomechanism
In a servomechanism, the stator and the rotor each have disk-shaped iron parts between which a disk-ring-shaped axial air gap is formed. The stator and rotor windings are fashioned as spiral-shaped...
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5225755 |
Motor servo circuit for disc reproduction apparatus
In a LD player, a phase comparison circuit compares the phases of a horizontal synchronizing signal reproduced from a LD with a reference synchronizing signal to generate a phase error signal...
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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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5220265 |
Discrete-type repetitive control method and an apparatus therefor
A discrete-type repetitive control unit which enables stable repetitive control even if a state variable of a controlled object is not observable, using time delay elements (Z -1 ). The number of...
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5216342 |
Sliding mode control method with a feedforward compensation function
A sliding mode control method with a feedforward compensation function achieves a control response characteristic adapted to varying system parameters and properly maintains a manipulated variable...
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5214362 |
Method for detecting a collision and stopping drive of a machine driven by servomotors
A collision detection/drive stoppage method capable of promptly detecting a collision of machine operating parts driven by servomotors with a foreign object, and of promptly stopping drive of the...
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5210478 |
Method of correcting machine position change
A method of correcting a change of position of a machine tool having at least two control axes. A position change check simulator (14) obtains a ratio (R2) of amounts of movement of respective axes...
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5208744 |
Automatic adjustment system for a process controller
A control supporting system for automatically determining control constants, including proportional gain, integral time and derivative time, of a controller used for controlling a given system in...
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5206570 |
Actuator servo compensation method
An actuator control loop for controlling head position in a rotating media data storage system. The invention applies the compensation zero to the PES prior to summing it with the integrator. This...
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5204602 |
Servomotor control method
A servomotor control method capable of automatically effecting optimum backlash acceleration correction under various machine operating conditions. A backlash acceleration correction process is...
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5196773 |
Controller for rivetting machine
A rivetting machine has a hydraulic cylinder connected with a hydraulic power source, the cylinder including a piston shaft, a motor-driven spindle extending through and journaled to the piston...
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5194788 |
Servo circuit
A servo circuit having a speed detection circuit for detecting a real speed from a position signal from an object under servo control. A speed error detection circuit generates an error between a...
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5192902 |
Velocity/phase controller for DC servo motor
A controller for properly controlling a rotating speed and a rotational phase of a DC servo motor. A velocity correction signal is obtained by comparing a rotation signal detected from the motor...
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5184055 |
Device for positioning control
A device for positioning control includes a movable stage; an acceleration sensor disposed on the movable table; a feedback loop for controlling movement of the movable table; and an acceleration...
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5180956 |
Adaptability controller for robots
An adaptive controller for robots for driving an actuator of a robot arm under servo control where a servo constant is set such that the robot arm follows up a predetermined reference movement...
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5180959 |
Electrically controlled shift actuator
An electrically controlled shift actuator (2) of the type having a rotatable worm gear wheel (22) driven by a motor (M) to a predetermined one of at least two rotational positions, the wheel having...
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5175479 |
Moving body position control apparatus and signal reproducing apparatus
There is provided position error computing means for sampling an error value between a position detecting signal derived from means for detecting the position of a moving body and a position...
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5173647 |
Servo positioning circuit
A servo positioning circuit having a speed detection circuit for detecting a real speed from a position signal from a servo object; a speed error detection circuit for generating an error between a...
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5166873 |
Process control device
A manipulated variable to be applied to a process and a process variable, are gathered by data gathering apparatus. In a modeling apparatus, which includes a process model, internal parameters...
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5164646 |
Tracking servo system
A tracking servo system of disk player uses the time difference detection method for generating the tracking error signal. A time gate is provided for detecting the zero-crossing of the tracking...
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5164647 |
Multivariable adaptive vibration canceller
A system for minimizing periodically induced vibration in a mechanical structure, particularly rotary shaft apparatus that is not limited to the use of any particular number or type of forcers or...
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5159250 |
Robot control method
A robot control method utilizing a convolution in which a calculating method is simple. Simultaneously, a synchronous operation of a multi-shaft system, such as a computerized numerical control...
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5157597 |
Method of detecting oscillation of a servo system and automatically adjusting speed loop gain thereof
Method for automatically detecting oscillation of a servo system, and for rapidly, correctly and automatically adjusting a speed loop gain thereof. The servo system is operated with the position...
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5155422 |
Self-tuning adaptive bandwidth regulator
Methods and apparatus for automatically identifying and adapting to changes in the overall gain of the mechanical plant in a digital servo control system to maintain a constant bandwidth.
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5150023 |
Method and apparatus for indexing moving portion of robot to origin
Herein disclosed are a method and an apparatus for indexing a moving portion of a robot to a mechanical origin. First and second reference holes are formed respectively in the moving portion and a...
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5144210 |
Capstan servo device
A capstan servo device comprising a frequency generator for detecting the rotation rate of a capstan motor and generating two-phase FG signals mutually having a 90° phase difference; a selector...
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5137119 |
Adaptive digital armature current control method for ward-leonard elevator drives using an SCR generator field converter
A current regulator phase controls a power signal to control silicon controlled rectifiers arranged in a bridge. The silicon controlled rectifiers excite a generator field of an elevator drive....
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5134354 |
Servo motor control apparatus
When a workpiece is cut or otherwise machined by a machine using a servo motor control apparatus having a position feedback loop, a velocity feedback loop, and a current feedback loop, it is the...
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5128813 |
Thermal compensated head positioner servo for disk drive
Thermal compensation is provided to a seek mode servo loop of a disk drive having a head and disk assembly including a spindle motor for rotating at least one data storage disk and an...
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5128812 |
Data transducer positioning system for rotating disk data storage apparatus
A system for positioning a transducer with respect to a multiplicity of concentric annular data tracks on a rotating hard magnetic disk. Included is a differential amplifier for providing an output...
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5121039 |
Index control apparatus for tool rest of NC lathe
An index control apparatus for the tool rest of an NC lathe for driving the tool rest to a desired indexed position on the basis of an NC machining command. In order to make the swivelling velocity...
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5119003 |
Non-linear dynamic compensation system
A non-linear dynamic compensation subsystem is added in the feedback loop of a high precision optical mirror positioning control system to smoothly alter the control system response bandwidth from...
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5119250 |
Method and apparatus for performing a seek
Disclosed is a method for performing a seek operation in a disk drive using current in the saturation mode to accelerate and decelerate the actuator arm. In a first embodiment, several measurements...
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