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JP3303784B2 |
To ensure the control responsiveness, and to prevent the generation of an over/undershoot in a controller for feedback controlling an object to be controlled into a target state. This is a device for detecting solenoid currents as a volt...
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JP2002202802A |
To provide a disturbance estimation type control system which is insensitive to parameter variation such as thermal load variation and rotating speed variation, a gas compressor control system, and a designing method for the disturbance ...
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JP2002171778A |
To provide a device for suppressing and control vibrations of an electric motor, capable of suppressing the vibrations of the electric motor by a simple controlling method and moreover capable of achieving the suppression and control of ...
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JP3283723B2 |
PURPOSE: To provide a closed loop feedback system having a open loop gain characteristic which is not changed even by the operating point of a system or the fluctuation of an environmental condition, or which is changed so as to be predi...
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JP3284138B2 |
PURPOSE: To provide a system for opening/closing control of an automatic convertible top which achieves quick opening/closing and control for protecting components from damage. CONSTITUTION: Position sensors which sense the instantaneous...
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JP3267836B2 |
PURPOSE: To secure sufficient followupability and safety for the characteristic change of a controlled system by determining next manipulated variable designated value based on first and second parameters on which the deviation of an ope...
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JP2002073106A |
To solve the problem that it takes a long time to stabilize profile control in the width direction of a paper making machine when set values are changed since an idle time and a time constant are long and then the production efficiency i...
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JP3242881B2 |
To provide a closed loop feedback control system which operates to maintain process variable set values or process variable, close to them. This system 10 includes a set value controller 20 which adjusts the process variable value in res...
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JP2001527231A |
A process control system including a method of suppressing overshoot of a process variable beyond the process value setpoint by predicting the overshoot by observing a waveform associated with the process variable, observing the waveform...
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JP3239060B2 |
To suppress disturbance and reduce the arithmetic processes for the compensation of the disturbance substantially even if there is a variation in motor characteristics. A drive means 4 which generates a motor drive voltage has a positive...
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JP2001306104A |
To provide a method of control in which reference value can be taken in as accurately as possible and protection of an electric driving apparatus from heat is guaranteed in controlling the electric driving apparatus which controls a cont...
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JP3217522B2 |
PURPOSE: To improve the positioning accuracy and shorten the positioning time of the device by providing a control means which compensates a disturbance force against a traveling body. CONSTITUTION: A first control means 7 switches a spe...
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JP2001518162A |
To achieve a very sturdy automatic control of the boost pressure, the integration of system deviation of the boost pressure, which is carried out by an integrator, is limited to a predefinable limiting value. Limiting value is composed o...
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JP3214514B2 |
PURPOSE: To reduce adverse influences upon a machine system and to clearly design normal characteristics. CONSTITUTION: A sliding curve Sun=0 for undershoot suppression, sliding curve Se=0 for equivalent control input control and sliding...
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JP2001514404A |
A method of preventing windup in a PID controller when using a nonlinear gain parameter is disclosed that is used in the PID controller of a process control system. The PID controller is arranged to produce within a current execution cyc...
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JP2001512881A |
A servo system in a disc drive (110) provides robust servo control during track following operations. The disc drive (110) includes a rotatable disc (112) having a disc surface (180, 182) with information arranged in tracks on the disc s...
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JP2001512882A |
A system and method validate a model used in implementing a model-based servo controller in a disc drive. A nominal model is first constructed. The nominal model is augmented with an uncertainty description to characterize variations in ...
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JP3199617B2 |
To provide a damping operation method which never changes the cut-off angle frequency of a control system that is obtained as a damping operation result in comparison with the anglar frequency that was obtained before connection of a dam...
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JP3164667B2 |
PURPOSE: To improve a response characteristic much more than conventional PID with one degree of freedom and PID with two degrees of freedom so as to make a grade much higher. CONSTITUTION: In a controller which executes at least a PI co...
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JP2001041240A |
To prevent resonance by performing a digital filter process at a sampling frequency, and controlling an electromagnet based on a signal having a damped frequency range including a resonance frequency of a natural frequency and a rotation...
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JP3090977B2 |
A control method and apparatus for suppressing the vibration components of a magnetic bearing. According to this invention, a vibration wave is sampled at pulses synchronized with the rotation of a rotor, the vibration waveform sampled v...
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JPH11341878A |
To attain high-speed response control for positioning by obtaining a switching signal with the first switching command signal selected, when a position deviation is within a prescribed range or the second switching signal, when it is out...
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JP2918767B2 |
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JPH11168381A |
To compensate the effect of correction waiting time without reducing a loop gain by storing correction executed by a controller and permitting the controller to execute evaluation with a monitor circuit connected to the controller. A cor...
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JP2891633B2 |
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JPH1185215A |
To actualize the system which can avoid influence on the stability and precision of control even in a process wherein various dynamic characteristics and time characteristics in a measurement section are not only stationary, but also tra...
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JPH1131001A |
To attain an even operation of a closed loop system or to estimate the operation of the system in regard to the changes in a wide range of electrical and environmental operating conditions by using the 1st and 2nd gain elements which hav...
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JPH10323072A |
To enhance system stability by finding a compensation torque value for vibration restriction based on a torque command value and a motor output speed, reflecting this compensation torque value to a torque command value and giving it to a...
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JPH10320793A |
To provide a method to reduce the error caused by impact at a comparatively lower cost. The error is compensated (108, 111) in accordance with correction data (FF(n-1)) stored in a memory by detecting (100, 102) the impact and responding...
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JP2814022B2 |
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JPH10275003A |
To suppress the occurrence of vibrations by controlling a drive means based on the difference between the estimated load acceleration and the PI- controlled load reference speed. In a double inertia resonance system 110, two moments of i...
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JPH10214102A |
To provide a feedback control system suitable for estimating and compensating nonlinear system disturbance by making the system include a disturbance estimation and control device and adding controller output signals generated by the dev...
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JPH10161703A |
To improve the power efficiency of a driving circuit by a switching means turned on and off according to the result of comparing a target value for setting the driving position of a driving means and a reference value generated based on ...
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JPH10133703A |
To provide a controller for making a system follow up a target track even under such a bad condition that a random disturbance is caused and physical parameters featuring dynamic characteristics are unknown. This controller is equipped w...
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JP2732761B2 |
A limiter circuit of servo motor control apparatus which can perform the limiter control in the right or reverse direction or in both directions of a motor, wherein there are provided a microprocessor (5) for outputting switching signal ...
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JP2566013Y2 |
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JPH1078801A |
To realize high responsibility control in a plant having a resonance mode. This system includes a plant 56 having a resonance mode, and a controller 5 which controls the plant 56 by receiving a plant input signal from the plant 56 throug...
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JP2720414B2 |
The invention relates to a controlling device with PID control component by means of which a controller output value (u) can be obtained from the control difference (Xd), with an actuator (5) with correcting variable limitation forming a...
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JPH1055201A |
To provide an excellent controllability by judging a response faulty state and a hunting state from a difference of a set value and a measured value. A relay 3 performs the changeover of turning a control circuit to a hunting time contro...
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JPH09273502A |
To provide a circuit for preventing hunting at a low cost by quickly reducing oscillation when a spool of a directional control valve is oscillated while operating an actuator of a construction machine. An angle detector 21 is fit in a b...
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JP2624704B2 |
A control system has a controlled element, such as an element for sensing an air/fuel ratio of an internal combustion engine, having a high order lag, a controller element connected with the controlled element to form a closed path, and ...
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JPH09138708A |
To speedily suppress a hunting phenomenon at the time of hunting a water storage level. When a hunting state is detected by the change of the measurement value of a water level meter 24, a target discharged water quantity (a) correspondi...
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JPH09101805A |
To easily realize a feedback control even if previous analysis is absent by learning information on the approximate position of a period orbit and the direction of a period and applying an adaptive tracking method. A non-linear dynamics ...
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JPH0833760B2 |
The device according to the invention comprises a summing circuit (1) deriving a control signal (2) on the basis of an input signal (3) and of a correction signal (4), an element (5) for processing the said error signal, followed by the ...
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JPH0816848B2 |
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JPH0836402A |
PURPOSE: To embody a device which easily adjusts the proportional gain and the integral gain. CONSTITUTION: The PI controller provided with first and second constant multipliers 3 and 4 to which the deviation between a target value 1 and...
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JPH07114559B2 |
A power system stabilizer (PSS) to bring the constant in a phase lead-lag circuit of the PSS to an optimum value by having such procedures carried out in its phase lead-lag compensation circuit as to apply the rule to lead the phase of t...
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JPH0792682B2 |
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JPH0793290A |
PURPOSE: To feed back a result outputted from a chaos processor capable of a real-time processing to a chaos system, by providing a dedicated processor for obtaining the correlation dimension of the state of an attractor, etc., by a hard...
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JPH0793002A |
PURPOSE: To speedily suppress a hunting phenomenon and perform the stable control by determining an optimum control arithmetic constant according to the estimated cause of the hunting phenomenon and setting the determined control arithme...
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