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JP4015589B2 |
A plant control system provides an enhanced capability of compensation for disturbance that abruptly changes. A controller includes a disturbance predictor for calculating a predicted value of disturbance on the basis of a drag force of ...
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JP3971225B2 |
To realize an appropriate disturbance recovery control and to facilitate parameter adjustment even if a controlled object is a nonlinear system. A response process of the disturbance recovery control is divided into, a convergence phase ...
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JP2007519107A |
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JP3942970B2 |
To provide a controller for a plant capable of maintaining good controllability and suppressing excessive correction when a disturbance is exerted in a spike state when controlling a plant which is the controlling object of an adaptive c...
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JP2007514999A |
A method, system, and computer program are provided for operating a valve using a cushion filter. The method, system, and computer program receive a process variable signal associated with operation of a valve. The method, system, and co...
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JP2007512629A |
A method, system, and computer program are provided for filtering a signal. The method, system, and computer program receive a sample of a signal being filtered and identify a bias associated with the sample. The bias includes a cushion ...
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JP3881593B2 |
To independently set maximum and minimum values of the amount of operations performed in control operations and in limit cycle autotuning. A control apparatus has a first amount of operations minimum output setting part 5 to set a first ...
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JP3874808B2 |
In a first embodiment, an absorption chiller including a generator (26) and an absorber (24) is provided, with at least one stream of concentrated absorbent solution flowing from the generator (26) to the absorber (24). Separate flows of...
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JP3869002B2 |
In a control system a characteristic quantity of a process (1) exhibits a periodic disturbance. A measuring system (2) generates a measuring signal (Vm) which represents the characteristic quantity. A control device controls the process ...
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JP3857054B2 |
In a servo control apparatus in which a machine system is driven by a servo motor, a phase compensation device is provided. The phase compensating device calculates a speed component (phase delay compensation signal) corresponding to a p...
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JP2006317148A |
To provide a control system capable of eliminating an overshoot, without reducing a response to a process disturbance.This system comprises a step for providing the control system 500 having an input for a water cooler system, a step for...
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JP3831258B2 |
To simplify parameter adjustment by realizing proper set value follow-up control even at the time of controlling a system whose non-linearity is strong. The response process of set value follow-up control is divided into a follow-up phas...
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JP3833479B2 |
To solve the problem that parameters need to be set again each time a controlled system is changed and also need to be set again to proper values even when environmental conditions of the controlled system change. A controller is equippe...
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JP3822565B2 |
Magnitudes of a sine-wave component and a cosine-wave component of a periodical disturbance are estimated in real time during motor rotating, the sine-wave component and the cosine-wave component at the frequency of the disturbance estim...
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JP3815545B2 |
To provide a control device for vibration suppression positioning capable of performing the stable positioning in short time. This device is provided with an integrator 6 for integrating a differential value of a target position command,...
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JP3809614B2 |
The present invention relates to a system configuration that can evaluate the stability of an output from a user's control system including all effects of unknown dynamic characteristics and disturbances and can guarantee the stability o...
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JP3776100B2 |
To provide a temperature control change gear circuit that can prevent switching noise caused by controlling a rotational speed in a fan motor and has a wider range, in which the rotational speed in the fan motor can be controlled, as com...
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JP3773686B2 |
To provide a servo controller and method for accurately and quickly estimating disturbance, and for accurately realizing servo control even at the time of suppressing disturbance and feedback controlling an object to be controlled by ine...
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JP2006512639A |
A repetitive controller for suppressing periodic signals with half-wave symmetry includes a memory loop fed with a periodic signal of period NT and in which the memory size includes N/2 memory elements. A negative feedback connection is ...
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JP3754444B2 |
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JP3732227B2 |
An adaptive control system is provided for controlling a plant subject to repetitive phenomena having at least one frequency component eg to cancel vibrations in a motor vehicle. The system comprises a complex reference generator for gen...
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JP2006001474A |
To provide an electric power steering device capable of relaxing impact at a stroke end while always retaining steering properties well regardless of the state of steering operation.The electric power steering device is provided with a r...
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JP2005344874A |
To provide a magnetic bearing device which can be reduced in circuit scale and cost.A differential signal from a sensor circuit 2B is converted into a digital value by an A/D converter 301, prior to be input to a DSP 307. A sampling freq...
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JP3718776B2 |
To adjust the frictional resistance in opening and closing of the cover of an input device by a user. The information processor comprises the input device for accepting an input from the user, and a cover part openably and closably conne...
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JP2005293564A |
To make the position of a control system including a servo motor and a mobile object driven by the servo motor sufficiently follow a command value, and to prevent overshoot from occurring at a measurement position fed back from the contr...
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JP3692383B2 |
The present invention relates to a method and a device for executing phase compensation in a control system of a motor-driven vehicle, in which the time derivative for an output signal (y) from a circuit (1) contained in the control syst...
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JP2005513601A |
A method of ascertaining control parameters for a control system having a controller and a plant includes establishing a model of the plant and a model of the controller and calculating a performance index for a closed-loop system as a f...
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JP2005512828A |
A system and method for reducing reaction forces induced in a machine frame by an oscillating tool employs a counterforce assembly which is driven to move along linear slides mounted to the machine frame. The counterforce assembly is dri...
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JP2005108228A |
To limit the rate of change of position error in a servo mechanism and servo control method.A reconfigured form of a PID (proportional integral differential) compensator is described. Consequently, the rate of change of the position erro...
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JP2005056172A |
To provide a method for extracting the maximum gain of a servo controller by which a machine is vibrated by increasing a gain however the machine is prevented from largely vibrating or noise from being produced by quickly detecting the v...
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JP2004315949A |
To calculate data in a continuous annealing line of ironworks, in order to know whether there is a possibility of realizing such a temperature control as to satisfy the condition of upper limit LH_i and lower limit LL_i of the control te...
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JP2004274911A |
To prevent a semiconductor switching element from being overheated or recover it from overheated state without exerting influence on the rotational speed of a motor.A temperature sensor 33 detects the temperature of a MOS transistor 7, a...
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JP2004264979A |
To provide a servo control device capable of providing high following accuracy without accompanying an overshoot or continuous vibration.A compensation signal computing unit 10 generates a target command increment value that is a compone...
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JP2004178450A |
To compensate torque ripple in a pulse-width-modulated machine.This method for compensating the torque ripple in the pulse-width-modulated machine includes providing damping to transient disturbances by use of a fixed feedback controller...
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JP3526022B2 |
To adjust a control parameter without oscillating a servo control system. Each control parameter P[p](p=0, 1,...) arranged in an order so that it can be difficult for a servo control system to oscillate are set sequentially from P[0], an...
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JP2004034593A |
To control pressure with high speed loop gain by suppressing oscillation in pressure control provided with a speed control loop in a pressure control loop.A pressure filter 10 constituted of a band elimination filter which attenuates a r...
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JP2003531425A |
A sensor placement algorithm uses process data to determine the optimal distribution of sensors in a distributed parameter manufacturing system. An automatic classification procedure maps any problems in the process to a predetermined se...
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JP3437807B2 |
To reduce overshooting, even when disturbance where the changing speed of controlled variables is fast is impressed. A subtracting part 3 subtracts controlled variables PV from a set value SP and outputs a deviation Er. When the absolute...
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JP3419452B2 |
PCT No. PCT/DE92/00222 Sec. 371 Date Jul. 9, 1993 Sec. 102(e) Date Jul. 9, 1993 PCT Filed Mar. 16, 1992 PCT Pub. No. WO92/18359 PCT Pub. Date Oct. 29, 1992.A rain detector in which the level of a sensor signal (15) which is emitted by a ...
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JP2003517690A |
A method of implementing a model based servo controller in a digital signal processor in a disc drive includes obtaining matrices for a discrete-time state-space realization of the servo controller. Controller states of the controller ar...
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JP2003148171A |
To provide a rotor speed control system with large attenuation of the resonance frequency of a main rotor and a tail rotor, while improving the engine response by the speedy responsiveness of the fuel flow.The output turbine speed contro...
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JP2003081603A |
To reconcile the reduction of equipment cost and the maintenance and stabilization of precision related to hydrogen production in a power generating system using a hydrogen producing apparatus.For the stabilization of the reaction, espec...
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JP2003047280A |
To overcome a problem wherein torque largely fluctuates due to abrupt change in current when a rectangular-wave current is passed through the winding in each phase of a motor, and to cope with this, a continuously changing current is pas...
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JP3372635B2 |
Provided is high-performance H INFINITY control technology suitable for position control or speed control of semiconductor exposure apparatus, servo writer of hard disk, etc. A series compensator in the classical control technology repre...
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JP3363449B2 |
A way of controlling a plant with multiple inputs and multiple outputs but allowing an operator to direct the control as if each controlled variable had a direct connection to operator controlled variables in described. An interference n...
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JP3352699B2 |
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JP2002323915A |
To provide a numerical controller which can sufficiently use the feed performance for a work as a numerical controller which controls the acceleration of a servomotor so that the servomotor is not overloaded.This numerical controller is ...
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JP3338695B2 |
To provide a method for preventing overshoot when a vehicle speed approaches a favorable speed in cruise control. In a method for setting presettable ideal vehicle speed, a control signal operating an engine and/or a transmission of an a...
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JP2002527804A |
For controlling multivariable systems, a control unit for controlling a system with several coupled control variables. The control unit includes controllers (10, 11) having associated control variables (x1, x2) as well as a decoupling ne...
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JP2002523821A |
The present invention provides a processing system that is capable of achieving substantially optimal control performance of a process facility on a "worst case" process system by accounting for changing system dynamics. The processing s...
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