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JP3234109B2 |
PURPOSE: To provide a process controller which can stably control a process having a long dead time. CONSTITUTION: The process controller controls a process 2 having a long dead time by means of a process model and is provided with a pro...
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JP2001330265A |
To realize a hot water supply system capable of adjusting the temperature of mixed water supplied from a hot water supply port to desired temperature in a short time.The hot water supply system comprises a mixing valve 9 in which the mix...
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JP3224941B2 |
PURPOSE: To easily calculate optimum differentiation time corresponding to the change of a control arithmetic operation period and to apply that differentiation time to a differentiating operation. CONSTITUTION: Concerning the digital PI...
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JP2001296906A |
To efficiently constitute a high performance digital robust control system suitable for the digital position control of a magnetic disk device of a low dimensional compensator order. The basic form of a frequency weighting function is se...
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JP2001291249A |
To eliminate the occurrence of the difference in time for outputting n pieces of digital driving signals in a control filter means for receiving n pieces of digital error signals and outputting n pieces of the digital driving signals. Th...
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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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JP3196907B2 |
PURPOSE: To realize a highly precise tracking operation even when only past output by several samplings can be obtained by deciding the correction amount of present time in such a way that an evaluation function on a deviation prediction...
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JP2001209402A |
To provide a control method that estimates a control volume using values obtained continuously at a high speed, interpolates the value between discrete values, assures to track a high frequency target value, and suppresses influence caus...
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JP3191836B2 |
PURPOSE: To attain the follow-up control with less operation quantity by receiving an object command at a current time and an output of a controlled system before sampling so as to allow the output of the controlled system to follow up a...
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JP3190185B2 |
PURPOSE: To precisely monitor abnormality of the system by precluding state explosion at the time of qualitative inference. CONSTITUTION: This device is equipped with a sampling means 1 which samples the state quantity of the system at a...
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JP3175877B2 |
PURPOSE: To reduce the operation volume to cope with the delay of detection of a controlled system output by providing a means, which obtains a deviation by a target command increment value and the output increment value of a controlled ...
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JP2001115880A |
To high-precisely control an air-fuel ratio as the influence of disturbance. Each time a reference signal from a crank angle sensor is outputted the given number CO of times, a feedback control amount of an air-fuel ratio through control...
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JP2001109513A |
To provide a plant controller which can stabilize the control and shorten establishment time. A ΔMV detection part 1 detects variation ΔMVn-1 in control output value in a precious control period T0n-1 in very sample cycles T1 and an EN...
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JP3152251B2 |
PURPOSE: To curtail a memory, and to shorten an arithmetic time by inputting an incremental value of a target command and an incremental value of an output of a control object, and outputting a correction command or its incremental value...
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JP3152250B2 |
PURPOSE: To shorten operation time by estimating a deviation increment through the use of target and correction command increments, the output increment of a controlled object and moving characteristic information and obtaining and outpu...
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JP2001056709A |
To more properly control a controlled system having a great change in a response speed caused by the difference of operating conditions, to reduce the capacity of a ROM or RAM required for control and to reduce a required arithmetic load...
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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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JP2001023819A |
To provide a controller of a linear solenoid which allows the improvement of the control responsiveness, without increasing the number of samplings of a detection signal.A switching element TR, which turns a current path of a linear sole...
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JP2000353002A |
To provide a control method to suppress lowering of control characteristics by receiving mutual interference due to plural controls when the plural controls are simultaneously performed for a control object such as an industrial robot, a...
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JP3109605B2 |
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JP2000298502A |
To realize an adaptive control system and its method using an adaptive digital filter at a low cost while securing sufficient performance for highly accurately and stably controlling a target to be controlled. The adaptive control system...
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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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JP2000242321A |
To perform an effective digital filtering process even in the case of frequencies nearby a Nyquist rate with respect to the feedback control unit, which performs feedback control so that a physical quantity such as the position, attitude...
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JP2000510265A |
A method for providing independent static and dynamic models in a prediction, control and optimization environment utilizes an independent static model ( 20 ) and an independent dynamic model ( 22 ). The static model ( 20 ) is a rigorous...
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JP2000207001A |
To enable temperature control according to heater control with fine resolution by using output obtained by using half cycle power unit of the alternating current power supply of a cycle control unit a unit. A total availability factor ca...
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JP2000194404A |
To obtain a control method which can stably control a system having a resonance system by setting the arithmetic sampling time of a D term at the time of feedback PD control over the system having the resonance system to an integral mult...
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JP2000508510A |
For current control of an inductive load (4), preferably an electromagnetic pressure regulator, a process is proposed in which an actual current value is detected synchronously and with a delay in relation to the output signal of a curre...
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JP3046177B2 |
PURPOSE: To reduce the operating time and to improve the processing efficiency by providing an acceleration/deceleration controller suppressing processing load and whose acceleration/deceleration time constant is optionally selected in a...
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JP2000148225A |
To shorten a total arithmetic operation time by varying the arithmetic operation time of a digital controller according to an input signal. A sampling signal having a different sampling cycle is extracted by a selecting circuit 8 accordi...
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JP3043021B2 |
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JP2000132218A |
To execute excellent control even by using a measuring unit of a long measurement cycle by measuring a state of a plant in a shorter cycle than the measurement cycle of the measuring unit. Plural measurement units 10, 11 and 12 measure a...
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JP3039814B2 |
PURPOSE: To perform the high precise follow-up action by correcting a control input so that the weighted squares sum of the predicted value of a future deviation can be minimum and considering the future correction quantity then. CONSTIT...
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JP3039573B2 |
PURPOSE: To attain the adjustment of the degrees of correction and to give the limitation to the control input, etc., in a learning control system where the output of a controlled system follows a target command which repeats the same pa...
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JP2000122711A |
To approximate a response delay due to a proportional element in a numerical controller to zero by previously grasping the response delay time of a control system and converting a pulse train before being sent to a relative operating mea...
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JP3036654B2 |
PURPOSE: To more correctly predict deviation by predicting the deviation in the future by correcting control input so that the weighted sum of squares of the predicted value of the deviation in the future becomes minimum and considering ...
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JP3035089B2 |
PURPOSE: To estimate the characteristic of a process with high precision even while improving responsiveness and the followup ability in the case of estimating the characteristic of the process. CONSTITUTION: Based on sampling values, mu...
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JP2000105607A |
To make neither the stability nor the response of control spoiled by difference in the input interval of an input signal, by detecting the input interval of an input signal with respect to a specific quantity, and varying the control con...
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JP3031499B2 |
PURPOSE: To improve the follow-up precision by making a learning starting spot into not the starting spot of a target command but the spot where deviation is zero or the spot near it. CONSTITUTION: In a learning control system to repeat ...
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JP2000099102A |
To improve the throughput of a feedback control system and to appropriately cope with the condition that it is necessary to simultaneously A/D- convert analog sensor signals respectively outputted by plural sensor systems equipped with c...
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JP3021790B2 |
PURPOSE: To set the accurate fixed quantity despite the continuous unreadable states by providing a fixed quantity setting means which controls the supply of the raw material to a container based on the weighing value given from a value ...
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JP3002819B2 |
In a method to reduce nitric oxide atmospheric emissions from a combustion process, ammonia (8a) is injected into the flow of combustion gases upstream of a catalytic converter (SCR process), or urea or a similar substance is spray-injec...
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JPH11514774A |
The invention relates to a device for displacing an object, which device includes a drive device for moving the object along an axis of motion, a control unit which is coupled to the drive device, a set-point generator which is coupled t...
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JP2985010B2 |
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JP2980409B2 |
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JP2975267B2 |
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JPH11312369A |
To propose a servo signal generating device, its method, and a disk device in which a servo characteristic having a sufficient phase margin can be obtained and a dynamic range can be expanded. A servo signal generating device is provided...
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JPH11282506A |
To dispense with a complicated analysis and control of the factors that cause the deterioration of controllability of a controller and to attain simplification and high performance of the controller by deleting the perturbation terms fro...
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JPH11272305A |
To absorb the characteristic variation of a controlled object with the lapse of time. The plant control device is provided with a control system 3 consisting of an adjusting gauge 1 for adjusting and operating a deviation from an objecti...
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JPH11272304A |
To improve a feed forward control operation and to improve control ability as a whole by adding a specified feed forward operation result and a specified feed back operation result, driving an actuator based on the added result and contr...
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