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Gray model-free control method for large time lag system

A control method and time-delay system technology, applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve the problem of high control difficulty in large time-delay systems, and achieve strong self-adaptability and robust performance, system The effect of small overshoot

Inactive Publication Date: 2011-01-26
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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Problems solved by technology

[0003] The present invention aims at the problem that the control difficulty of the large time-delay system is high, and proposes a gray model-free control method for the large time-delay system, combining the gray prediction model with the model-free control, and adopting gray prediction in the model-free control The control method of the model is used to realize the control of complex objects, and realize the gray model-free control of large time-delay systems

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  • Gray model-free control method for large time lag system
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  • Gray model-free control method for large time lag system

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[0025] Such as figure 1 The system structure diagram of the gray model-free control is shown, and a gray prediction model GM(1,1) is added to the feedback loop of the model-free adaptive control, and the gray advanced prediction is used to compensate the system time lag and deal with the time-varying parameters. System uncertainty, thus forming a new control law to act on the controlled object, thereby improving the control effect of model-free adaptive control, and achieving the purpose of effectively controlling complex objects.

[0026] Based on gray model-free control, it combines model-free control and gray theory to overcome problems such as system uncertainty and system delay. It is to add a gray prediction model GM(1,1) in the feedback loop of model-free control, which is used to predict and compensate the system uncertainty caused by system delay and parameter time variation, and form a new control law. On the large time-delay object, the control effect of the model...

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Abstract

The invention relates to a gray model-free control method for a large time lag system. A gray prediction model is combined with model-free control, and complex objects are controlled by adopting a control method of adding the gray prediction model into the model-free control so as to realize the gray model-free control of the large time lag system. Therefore, large time lag can be controlled effectively by the method, and the method has the advantages of small system overshoot, quick stabilization, strong adaptivity and robust performance, and can be applied to the industrial complex large time lag control process.

Description

technical field [0001] The invention relates to a control method for a large time-delay system, in particular to a gray model-free control method for a large time-delay system. Background technique [0002] The control problem of large time-delay process is a hot issue in the research of control theory and practice. The existence of the large time lag phenomenon makes the current control effect of the system reflected in the output after a period of time, and the control part of the system cannot get the feedback information of the control effect in time. When the control effect can be reflected through the output measurement, the control effect at this time The intensity is often overdone. Therefore, the existence of a large time lag increases the overshoot of the system, deteriorates the stability, and prolongs the adjustment time, which seriously affects the control quality of the system. It is generally considered that the pure lag time of the object τ with time const...

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Application Information

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IPC IPC(8): G05B13/04
Inventor 程启明程尹曼王映斐汪明媚
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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