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Integrated multi-model method for controlling CSTRs (continuous stirred tank reactors)

A control method and reactor technology, applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve problems such as difficult scheduling, affecting control effect, and system instability

Active Publication Date: 2015-09-30
ZHEJIANG UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

For another example, the scheduling method between multiple models / controllers is also a problem. Most of the multi-model methods are not scheduled under a unified framework, which may not only affect the control effect, but may even cause system instability.

Method used

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  • Integrated multi-model method for controlling CSTRs (continuous stirred tank reactors)
  • Integrated multi-model method for controlling CSTRs (continuous stirred tank reactors)
  • Integrated multi-model method for controlling CSTRs (continuous stirred tank reactors)

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Embodiment Construction

[0059] In order to improve the shortcomings of the traditional multi-model method, the present invention proposes a multi-model method integrating space division and optimization control based on the hybrid system theory, which is not only applicable to the process object of CSTR, but also applicable to general nonlinear system control question. In order to make the object, technical solution and advantages of the present invention clearer, the method is used in the switching process of the first-order reaction CSTR working point in the following. The specific implementation steps are as follows:

[0060] 1. Carry out state space modeling for the first-order reaction CSTR process object, and determine its normal working range, input constraints, steady-state operating point and other information.

[0061] The CSTR process considered in the present invention has been studied by many scholars as a classical nonlinear object. Such as figure 1 As shown, what is going on in the ...

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Abstract

The invention discloses an integrated multi-model method for controlling CSTRs (continuous stirred tank reactors), applies to the control of nonlinear systems, especially first-order reaction CSTRs, and can ensure that the industrial process can quickly, accurately and stably transit from a stable operating point to another stable operating point. Since effect of control feedback on the dynamic characteristics of the system is considered, compared with the existing multi-model method for controlling the first-order reaction CSTRs, the method has particularly notable advantages.

Description

technical field [0001] The invention relates to a novel multi-model method integrating space division and optimization control, in particular to a multi-model control method for a first-order reaction continuous stirred tank reactor (CSTR), which belongs to the technical field of automatic control. Background technique [0002] The continuous stirred tank reactor (Continuous Stirred Tank Reactor, CSTR) is a common nonlinear chemical reactor. Due to its low cost, strong heat exchange capacity and stable product quality, it has become the core equipment for the production of polymers. It has been widely used in dyestuffs, pharmaceutical reagents, food and synthetic materials industries. The control variables of CSTR mainly include concentration, temperature, etc. The control of these variables will directly affect the quality of chemical products. [0003] After decades of research by scholars, linear control technology has developed quite maturely, but the actual industrial ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04
Inventor 宋春跃夏炳蔚
Owner ZHEJIANG UNIV
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