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Model-free adaptive optimized control method for PVC polymerization process

A model-free self-adaptive and control method technology, applied in the direction of self-adaptive control, general control system, control/regulation system, etc., can solve problems such as economic loss and complicated mechanism, achieve small deviation, strong system robustness, good Track performance and control the performance of performance metrics

Inactive Publication Date: 2016-06-15
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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Problems solved by technology

As a chemical product, PVC resin has a complex mechanism of faults in the production process. The production process has typical characteristics such as large inertia, large hysteresis, and nonlinearity. It is a complex industrial process, and it is urgent to improve the reliability and safety of system production. To avoid system failure, resulting in economic losses or even large-scale accidents

Method used

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Embodiment Construction

[0024] The present invention will be described in detail below in conjunction with examples.

[0025] 1. According to the linearized representation of the SISO discrete-time nonlinear system, the algorithm design of the control law and the estimation algorithm of the pseudo partial derivative are carried out.

[0026] A general nonlinear discrete-time system can be expressed as:

[0027] (1)

[0028] In the formula, , ; is any nonlinear function; , represent the output and input of the system, respectively; , represent the unknown order of the system, respectively.

[0029] For the nonlinear system (1), the following assumptions are given:

[0030] Hypothesis 1: The system (1) formula is that the input and output are considerable and controllable. That is, the bounded expected output signal for a certain system , there exists a bounded feasible control input signal , so that the system is driven by this control input signal, and its output is equal to th...

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Abstract

The invention relates to a model-free adaptive optimized control method for a PVC polymerization process, and relates to an optimized control method for the polymerization process. The PVC polymerization process is a complex industrial process characterized by high inertia, large lagging and non-linearity. A model-free adaptive controller algorithm is designed aimed at a common discrete time non-linear system; particle swarm optimization is used to optimize and set key parameters of the controller; a model-free adaptive optimal controller is used to control a polymerization temperature system obtained by least squares identification; and a simulated experiment result shows that the model-free adaptive controller algorithm based on particle swarm optimization can obtain better control performance indexes.

Description

technical field [0001] The invention relates to an optimal control method of a polymerization process, in particular to an optimal control method of a model-free self-adaptive control PVC polymerization process. Background technique [0002] Polyvinyl chloride (PolyvinylChloride, PVC) is one of the five major thermoplastic synthetic resins, and is widely used in various fields such as industry, agriculture, construction and public utilities. As a chemical product, PVC resin has a complex mechanism of faults in the production process. The production process has typical characteristics such as large inertia, large hysteresis, and nonlinearity. It is a complex industrial process, and it is urgent to improve the reliability and safety of system production. To avoid system failure, resulting in economic losses or even large-scale accidents. Contents of the invention [0003] The purpose of the present invention is to provide a kind of optimization control method for the polyme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/00
CPCG05B13/00
Inventor 高淑芝吴晓峰薛之化朗丹张国光蔡庆春
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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