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An intelligent tracking control method for chemical batch process

A control method and intelligent tracking technology, applied in the field of automation, can solve problems such as large lag, and achieve the effect of good control performance and good tracking characteristics

Active Publication Date: 2021-06-18
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to propose a new intelligent tracking control method for dealing with problems such as nonlinearity and large lag in chemical batch processes

Method used

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  • An intelligent tracking control method for chemical batch process
  • An intelligent tracking control method for chemical batch process
  • An intelligent tracking control method for chemical batch process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0057] Take the water injection process control of a three-capacity water tank as an example:

[0058] Each water injection process in the process can be regarded as an intermittent process, and the adjustment method is to control the height of the liquid level by adjusting the flow rate of the pump.

[0059] Step 1. Establish the model of chemical batch process, the specific steps are:

[0060] 1.1 The form of establishing a discrete state space model is as follows:

[0061] IF Z 1 (t,k)is M i1 and z j (t,k)is M ij ,…,z p (t,k)is M ip

[0062] THEN

[0063]

[0064] i=1,2,...,r; j=1,2,...,p.

[0065] Among them, z 1 (t,k),z j (t,k)...,z p (t, k) is the language variable of the rule condition, indicating the state of the liquid level in the water tank; M i1 ,...,M ij ,...,M ip is an elastic language set; i represents the i-th elastic rule, which is an independent variable; r represents the number of elastic rules, and p represents the number of conditional la...

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Abstract

The invention discloses an intelligent tracking control method for a chemical batch process. The present invention first establishes the local discrete model of the chemical batch process, further obtains the overall model of the control system, then introduces the tracking control law, defines the error function of the system, further obtains the equivalent process control system, and finally adopts a compensation control algorithm to design the update law Get the control law. Compared with the traditional control strategy, the new intelligent tracking control strategy proposed by the present invention can achieve good tracking characteristics by using the tracking correction ability of the tracking control along the process direction and adjusting the feedback control to ensure that the system obtains better control performance .

Description

technical field [0001] The invention belongs to the technical field of automation and relates to a novel intelligent tracking control method. Background technique [0002] With the development of industry, industrial process technology has also developed rapidly. Some advanced control technologies have also been applied to industrial production. In the process of modern industrial production, there are factors such as process nonlinearity, large time delay and external disturbance of the system. Most of the existing control methods cannot describe the actual nonlinear control system well. On the other hand, the problem of serious hysteresis in the chemical batch process and some repetitive and non-repetitive dynamic problems in the process will lead to the instability of the system and the decline of control performance. Therefore, the control model of nonlinear process is established, and the scheme of combining closed-loop feedback control and tracking control method is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/04
CPCG05B13/045G05B2219/2609
Inventor 张日东侯平智
Owner HANGZHOU DIANZI UNIV
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