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JPS5815072Y2 |
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JPS588445B2 |
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JPS581206A |
PURPOSE:To make the operation of regulation stable and to improve the accuracy of regulation, by providing a plurality of buffers and giving an input to a regulator via a buffer selecting a reference of a control variable. CONSTITUTION:B...
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JPS57209501A |
PURPOSE:To stabilize the operation of a controller and to make the accuracy of control higher, by mitigating rapid change in a target value of a controlled variable and taking it as an input to the controller. CONSTITUTION:A value V0 of ...
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JPS57193801A |
PURPOSE:To achieve smooth ascent and descent in a prescribed route, when a reference signal is changed, by providing an interval comparator which outputs an interval difference signal corresponding to the difference of pulse intervals an...
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JPS5754806B2 |
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JPS57179311A |
PURPOSE:To facilitate maintenance by a method wherein a pipe filter is composed of a notch filter and a primary delay element which have individual printed board constructions, in a pressure control circuit incorporating a pipe filter to...
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JPS57176405A |
PURPOSE:To suppress the overshoot and to decrease the settling time, by excuting the automatic parameter adjustment through the operation of a load when the set point is changed, and setting a desired parameter after a specified time ela...
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JPS57176406A |
PURPOSE:To extend the life of mechaism, by preventing frequent oscillation of a valve control output at steady-state without differentiating operation, when the deviation between a process variable signal and a set point is within a spec...
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JPS57166613A |
PURPOSE:To prevent a load and disturbance from being generated, by setting an opening of a by-pass valve variably, and also inhibiting an operation of a digital regulating valve controller, when it is required to change a flow rate level...
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JPS57129975A |
PURPOSE:To ensure that whenever the input is O, the blind sector compensation circuit issues the electric output signal O, by having the output O issued whenever the absolute value of the input signal is small enough not to affect the co...
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JPS57127203A |
PURPOSE:To reduce hunting and overshoot in all set values, by adjusting a control part in a prescribed set value and adjusting an adjusting part in accordance with this adjustment. CONSTITUTION:A control part 2 measures a process state q...
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JPS57114903A |
PURPOSE:To achieve stable control even for a process where dead time is in variance, by applying the length of dead time in variance calculated with operation from the operation state date of the process to a controller with operator as ...
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JPS57111602A |
PURPOSE:To make a control system inexpensive without excessively increasing the capacity of control power installations by adding a microapplication time to an ordinary basic application time when a deviation does not yet attain a desire...
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JPS57111702A |
PURPOSE:To correct the measure value of a process variable rapidly, by providing a feed forward control device and a feedback control device in one control object to correct the measure value of the process variable on a basis of the dev...
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JPS57111603A |
PURPOSE:To improve responsiveness of control effectively by holding an indication signal on when the value of deviation increases continuously and divergently toward one direction and the deviation of prescribed detection times deviate f...
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JPS57110604U |
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JPS5797101A |
PURPOSE:To ensure the stable and quick control for a control subject device when the set value is greatly changed, by applying the set value signal to a process controller via a transmission function element. CONSTITUTION:The set value s...
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JPS5783801A |
PURPOSE:To eliminate the control delay time, by supplying a control deviation to a delay circuit when control conditions reach restricted those and inputting the addition signal of the output of the delay circuit and the control deviatio...
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JPS5769401A |
PURPOSE:To exercise hunting-free stable control by obtaining a true value for a target water level, by providing a detector, which measures the extent of opening of gate facilities, to an automatic control system which obtains the target...
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JPS5769326A |
PURPOSE: To compensate the effect due to the fluctation of control cycle caused by an external function and to maintain the stability of control, by measuring the control cycle given from a timing device and giving the automatic control ...
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JPS5762404A |
PURPOSE:To facilitate operation for starting up process control by automatically varying the limit value of a limiter unit from a value equivalent to the normal-state value of an oerating terminal to a value equivalent to a miximum opera...
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JPS5750002A |
PURPOSE:To improve response characteristics by performing control arithmetic on the basis of a desired value greater than a final desired value when a detected value is less than the final desired value by more than a prescribed value. C...
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JPS5748102A |
PURPOSE:To prevent a cycling phenomenon, by lowering the control gain of a servomechanism in accordance with a state of a deviation output. CONSTITUTION:A controlled variable signal from a sensor is applied to a terminal 18. A circuit 19...
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JPS5743202A |
PURPOSE:To compensate and control variation caused by an uncertain causes, by fetching an accmpanied phenomonon with an incidental abnormal phenomenon in real time, obtaining the delay time and compensating amount based on the correlatio...
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JPS5734201A |
PURPOSE:To make accurate control possible without hysteresis phenomenon by adjusting a signal fed to a solenoid coil so as to be ''0'' in every reduction of the signal. CONSTITUTION:During the period when an output A generated from an el...
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JPS578803A |
PURPOSE:To improve the stability of a valve under high-speed control by discriminating which one of the corrected amount of a valve position found by control arithmetic and that of a present valve position is considered to be the actual ...
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JPS579260A |
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JPS56149601A |
PURPOSE:To prevent an overshoot, by setting the value obtained by adding a prescribed value to an extent of operation in the normal condition when the value of detection is within a prescribed range in case the targeted value is changed ...
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JPS56147202A |
The method serves to control sluggishly reacting plants by controllers in which rapid changes in set value occur. The controller has an integral section and a proportional section separate from the I-section. The I-section receives a con...
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JPS5647619B2 |
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JPS56124908A |
PURPOSE:To reduce a control error without excessively raising the operation frequency of an apparatus to be controlled, by varying a blind sector set point in accordance with the operation frequency of the apparatus to be controlled. CON...
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JPS56123006A |
A circuit for a servo-amplifier saves power when the position servo has reached balance. The servo input is a high frequency differential transformer having its armature positioned by mechanical means driven by a servo motor controlled t...
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JPS56115959A |
PURPOSE: To make it possible to measure the frequency of the change of the control system and control the process by comparing the running average value of the whole sampling data within a fixec time with the data distribution curve. CON...
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JPS5638195Y2 |
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JPS5630965B2 |
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JPS5682903A |
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JPS5627887B2 |
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JPS5652526A |
A gas turbine engine fuel control system includes an hydromechanical speed governor fuel flow control with an electromechanical trim. The trim is controlled by a proportional-plus-integral controller in accordance with the error signal f...
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JPS5619269B2 |
An ink jet printer uses a detector circuit for detecting the relation between the generation of an ink droplet and the phase of a charging signal on the basis of an output signal of a sensor against which the ink droplets charged by a ph...
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JPS5649901U |
An electronic controller for a process control system for use with a bi-directional single speed actuating device wherein the controller includes a proportional plus integral mode with predictive position feedback.
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JPS562252Y2 |
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JPS55155138U |
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JPS5542401B2 |
An automatic control apparatus comprises a means for detecting deviation of an actual value from a target value of a controlled quantity for the control operations and a damping feedback means, at least one of which means is provided wit...
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JPS5576403A |
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JPS5522871U |
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JPS54155411A |
A regulation system for a limited rotation, polarized, moving iron galvanometer has means for providing a first voltage dependent upon the angular velocity of the armature (12), the self-inductance of the galvanometer drive coil (36, 38)...
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JPS54103978A |
PURPOSE:To appropriately set an auxilary command which is about to overshoot, by comparing a controlled variable with a command and detecting their coincidence and generating a coincidence output. CONSTITUTION:When the command 8 and the ...
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JPS54102473A |
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JPS5476953A |
A system for regulating the output of a variable ratio transformer uses a reversible servo-motor 11 in which the actual voltage Ui is compared with the required voltage Us in a comparator 1 to produce an error signal which is applied to ...
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