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Water tank liquid level control method based on generalized prediction control optimization

A technology of generalized predictive control and liquid level control, used in liquid level control, non-electric variable control, control/regulation systems, etc.

Inactive Publication Date: 2014-10-01
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology

[0003] The purpose of the present invention is to provide a water tank liquid level control method based on generalized predictive control optimization, to solve the problems existing in the existing water tank liquid level control method, and then improve the water tank liquid level control performance

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  • Water tank liquid level control method based on generalized prediction control optimization
  • Water tank liquid level control method based on generalized prediction control optimization
  • Water tank liquid level control method based on generalized prediction control optimization

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Embodiment Construction

[0040] The preferred embodiments will be described in detail below in conjunction with the accompanying drawings. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0041] figure 1 It is a flow chart of the water tank liquid level control method optimized based on generalized predictive control, such as figure 1 As shown, the water tank liquid level control method based on generalized predictive control optimization provided by the present invention includes:

[0042] Step 1: Collect the data of the liquid level of the water tank and the opening of the water inlet valve at each moment.

[0043] Step 2: According to the collected data, use the least square method to identify and set the PID controller parameters of the water inlet valve at the current moment, including:

[0044] Sub-step A1: Using the collected liquid level of the water tank as output data and the collected wate...

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Abstract

The invention discloses a water tank liquid level control method based on generalized prediction control optimization in the technical field of automatic control. The water tank liquid level control method includes the steps of collecting data including the heights of the water tank level at all moments and the opening degree of a water inlet valve, recognizing and calculating PID controller parameters of the water inlet valve at the current moment according to the collected data on the basis of a generalized prediction optimization control algorithm, controlling the opening degree of the water inlet valve according to the PID controller parameters of the water inlet valve at the current moment so as to control the water tank liquid level, repeatedly executing the steps at the next moment, and controlling the opening degrees of the water inlet valve at all the moments. By means of the water tank liquid level control method based on generalized prediction control optimization in the technical field of automatic control, the excellent performance of generalized prediction control and the excellent performance of PID control are inherited, and meanwhile the form is simple, and the requirements in the practical industrial process can be met.

Description

technical field [0001] The invention belongs to the technical field of automatic control, and relates to a water tank liquid level control method based on generalized predictive control optimization. Background technique [0002] Liquid level is one of the control parameters often encountered in industrial process production. Accurate liquid level control of the control object is not only related to the quality of the product, but also an important issue to ensure the production effect and safety. Therefore, the accuracy of liquid level control has important practical significance and broad application prospects. The principle of PID (proportional-integral-derivative) control law is simple and easy to implement, and it is extremely effective for single-loop control systems without time delay. As a kind of advanced control method, generalized predictive control has good control performance and strong anti-interference ability. If the excellent performance of generalized pred...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D9/12
Inventor 刘向杰习春苗赵亮
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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