Control system and adjusting method thereof
AssigneeDelta Electronics, Inc.
InventorChin-Shiong Tsai
Life of this patent
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Abstract
A control system used to control a controlled plant includes a main control unit, a first tuning unit, and a second tuning unit. The control system regulated by two weighting parameters of a first multiple and a second multiple, robustness and rapid response are attained, and excess of the output signal the controlled plant generates disappears or approaches zero. The control system has technical features of objective bandwidth, offsetting of low frequency disturbance, and matching of transfer functions. By designing the main control unit, the first tuning unit, and the second tuning unit, regulating the two weighting parameters of the first multiple and the second multiple, and tuning the actual system, the above technical features are obtained.
Claims16
A control system controlling an output signal produced by a controlled object, the control system having a bandwidth and represented by a first mathematic model having a first transfer function, the control system comprising:
- a master control unit represented by a second mathematic model having a second transfer function configured to make an open loop bandwidth of the control system approach to a target bandwidth and generate a first operating signal;
- a first adjusting unit represented by a third mathematic model having a third transfer function and configured to receive the first operating signal and generate a first adjusting signal, wherein the first adjusting signal, the output signal, and the first operating signal are calculated for generating a second operating signal, and the output signal approaches to the first adjusting signal, so that an interference signal the controlled object subjects is offset;
- and
- a second adjusting unit represented by a fourth mathematic model having a fourth transfer function and configured to receive an input signal for generating a second adjusting signal, wherein the second adjusting signal, the output signal and the input signal are calculated for generating a third operating signal, which is provided for the master control unit and causes the first transfer function of the control system approaching to the fourth transfer function of the second adjusting unit.
A control system controlling an output signal produced by a controlled object, the control system having a bandwidth and represented by a first mathematic model having a first transfer function, the control system comprising:
- a master control unit represented by a second mathematic model having a second transfer function configured to make an open loop bandwidth of the control system approach to a target bandwidth, and generate a first operating signal;
- a first adjusting unit represented by a third mathematic model having a third transfer function and configured to receive the first operating signal and generate a first adjusting signal, wherein the first adjusting signal, the output signal, and the first operating signal are calculated for generating a second operating signal, and the output signal approaches the first adjusting signal, so that an interference signal the controlled object subjects is offset;
- a first adder configured to generate a first result signal by subtracting the output signal from the first adjusting signal;
- and
- a first amplifier configured to receive the first result signal and generate a second result signal by amplifying the first result signal by a first multiple, wherein the first multiple is adjusted so that the output signal approaches to the first adjusting signal.
A adjusting method of a control system for adjusting an output signal generated by a controlled object, the control system having a bandwidth and represented by a first mathematic model having a first transfer function, the method comprising:
- (a) setting up a target bandwidth for the control system;
- (b) designing a control function based on the target bandwidth, and thereby causing a open loop bandwidth of the control system approaching to the target bandwidth and generating a first operating signal;
- (c) generating a first adjusting signal based on the first operating signal;
- (d) generating a first result signal by subtracting the output signal from the first adjusting signal;
- (e) generating a second result signal by amplifying the first result signal by a first multiple;
- (f) generating a second operating signal by summing up the second result signal and the first operating signal;
- and
- (g) adjusting the value of the first multiple so that the output signal approaches to the first adjusting signal by feeding the second operating signal back to the controlled object generating the output signal.
Dependencies are inferred from the claim text.