Intelligent tracking control method of chemical intermittent 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

Active Publication Date: 2018-11-13
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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  • Intelligent tracking control method of chemical intermittent process
  • Intelligent tracking control method of chemical intermittent process
  • Intelligent tracking control method of chemical intermittent 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 of a chemical intermittent process. The method comprises the steps of establishing a local discrete model of the chemical intermittent process, and further obtaining a model of the overall control system, introducing a tracking control rule, defining an error function of the system to further obtain an equivalent process control systemand adopting a compensation control algorithm to design an updating rule to obtain a control rule. Compared with a traditional control strategy, the novel intelligent tracking control strategy has the advantages that the good tracking characteristics are achieved by adopting tracking correction capability of tracking control along the process direction and adjusting feedback control, and better control performance of the system is guaranteed.

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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IPC IPC(8): G05B13/04
CPCG05B13/045G05B2219/2609
Inventor 张日东侯平智
Owner HANGZHOU DIANZI UNIV
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