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Multi-model adaptive control method and system for spherical tank system

An adaptive control, multi-model technology, applied in the control field, can solve problems such as large transient error, low identification speed, and system instability

Inactive Publication Date: 2018-03-23
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a multi-model adaptive control method and system for a spherical tank system, which can solve the problem of excessive transient error or system instability caused by low identification speed in the control process

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  • Multi-model adaptive control method and system for spherical tank system
  • Multi-model adaptive control method and system for spherical tank system
  • Multi-model adaptive control method and system for spherical tank system

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Embodiment Construction

[0103] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. Obviously, what is described here is only a part of the examples of the present invention, not all examples. Based on the implementation of the present invention For example, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0104] In order to facilitate the understanding of the embodiments of the present invention, specific embodiments will be taken as examples for further explanation below in conjunction with the accompanying drawings, and each embodiment does not constitute a limitation to the embodiments of the present invention.

[0105] The invention provides a multi-model self-adaptive control method of a spherical tank system to control a nonlinear system.

[0106] In ...

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Abstract

The invention relates to a multi-model adaptive control method and system for a spherical tank system. The liquid level control system of the spherical tank is identified through at least one linear model and at least one nonlinear model based on neural network. The two models correspond to a linear An adaptive controller and a nonlinear adaptive controller based on a neural network; a switching unit based on a performance index switches to an optimal controller at each sampling time to realize control. Compared with the traditional nonlinear multi-model self-adaptive control method, the invention relaxes the boundary of the non-linear term of the spherical tank liquid level control system to a bounded growth rate, which can effectively expand the adaptability of the multi-model self-adaptive controller.

Description

technical field [0001] The invention relates to a control method and system, in particular to a multi-model adaptive control method and system for a spherical tank system. Background technique [0002] As people pay more and more attention to energy issues and environmental issues, industrial technology is gradually changing from extensive to intensive. The original simple control method for a single device is no longer suitable for increasingly complex large-scale industrial systems. The linear system model established by linearizing a certain operating point is widely used in modern control systems due to its simple structure and easy understanding. However, general industrial systems have different degrees of nonlinear characteristics. The control methods for linear systems can no longer effectively control some complex systems with strong nonlinearity, so it is necessary to design better control methods for nonlinear systems. [0003] In the industrial production proces...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/04
Inventor 王昕黄淼
Owner SHANGHAI JIAOTONG UNIV
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