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A 2D Model Predictive Control Method for Batch Process

A predictive control, two-dimensional model technology, applied in the field of automation, can solve problems such as inability to meet control accuracy and stability, enterprise cost and quality constraints, etc., to improve tracking performance and anti-interference, improve control stability, and improve accuracy. Effect

Active Publication Date: 2021-02-05
HANGZHOU DIANZI UNIV
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AI Technical Summary

Problems solved by technology

[0002] With the development of industry and the improvement of social production level, the batch process has many advantages such as repetitive action production, high efficiency, and low cost. It has been applied to various fields of social production, and there is repetition in the same production process of the batch processing system. , which is more transparent to the control of chemical, medical and other production processes, but with market competition, enterprises have cost and quality constraints, and simple process control methods can no longer meet the requirements of control accuracy and stability

Method used

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  • A 2D Model Predictive Control Method for Batch Process
  • A 2D Model Predictive Control Method for Batch Process
  • A 2D Model Predictive Control Method for Batch Process

Examples

Experimental program
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Effect test

Embodiment Construction

[0076] Take the injection molding process as an example:

[0077] Here we take the packaging pressure control in the injection molding process as an example to describe, and the adjustment method is to control the valve opening of the proportional valve.

[0078] Step 1. Establish a state space model for packaging pressure control, specifically:

[0079] 1.1 First collect the input and output data of the packaging pressure process, and use the data to establish the actual process model of the packaging pressure process, in the form as follows:

[0080] F(q t -1 )y(t,k)=H(q t -1 )u(t,k)

[0081] Among them, t and k are discrete time and cycle index respectively, y(t,k) and u(t,k) are the packaging pressure and valve opening at time t in k cycle, q t -1 is the time-domain unit backward shift operator. F(q t -1 ), H(q t -1 ) is the corresponding polynomial in the form:

[0082] F(q t -1 )=1+f 1 q t -1 +f 2 q t -2 +…+f m q t -m

[0083] H(q t -1 ) = h 1...

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Abstract

The invention discloses a two-dimensional model predictive control method for a batch process. The technical solution of the present invention is to establish a two-dimensional model predictive control method for the batch process by means of data collection, model establishment, prediction mechanism, optimization, etc. The present invention uses an error compensation strategy to improve the control performance of the system to improve the batch process The control performance of the secondary production process. In the new state model structure, a new state space model is proposed. The invention can effectively improve the tracking performance and anti-interference performance of the control method in the batch process, and can effectively improve the control precision and control stability by using the invention.

Description

technical field [0001] The invention belongs to the technical field of automation and relates to a two-dimensional model predictive control method for a batch process. Background technique [0002] With the development of industry and the improvement of social production level, the batch process has many advantages such as repetitive action production, high efficiency, and low cost. It has been applied to various fields of social production, and there is repetition in the same production process of the batch processing system. , which is more transparent to the control of chemical, medical and other production processes, but with market competition, enterprises have cost and quality constraints, and simple process control methods can no longer meet the requirements of control accuracy and stability. The low pass rate of enterprise products and the low efficiency of production equipment have formed the requirements for the development from conventional control to complex cont...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 张日东
Owner HANGZHOU DIANZI UNIV
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