Multichannel decoupling temperature control method

A temperature control method and a technology of a temperature control system, which are applied in the field of multi-channel decoupling temperature control, and can solve problems such as adverse effects of output temperature control accuracy

Inactive Publication Date: 2015-05-27
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
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  • Claims
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Problems solved by technology

However, the actual engineering practice shows that due to the lack of consideration of the coupling relationship between the temperature zones (channels), the temperature values ​​of each temperature zone affec...

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  • Multichannel decoupling temperature control method
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  • Multichannel decoupling temperature control method

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Embodiment Construction

[0029] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0030] figure 1 is the process flow chart according to the constructed multi-channel decoupling temperature control method. like figure 1 As shown in , the applicable object of the process method of the present invention is a multiple-input multiple-output temperature control system, and provides a parameter identification that can realize the transfer function of a multiple-input multiple-out...

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Abstract

The invention discloses a multichannel decoupling temperature control method. The method comprises steps as follows: a transfer function matrix is established between input voltage and output temperature of a temperature control system, step voltage input is provided for the channels one by one respectively, corresponding step ascending curves are acquired, and corresponding parameters of a transfer function are recognized; a decoupling network is designed for decoupling of the temperature control system, and finally, all the channels of the temperature control system are correspondingly and more accurately adjusted and controlled in combination of the decoupled transfer function and an incremental PID (proportion integration differentiation) algorithm. By means of the method, coupling among multiple channels can be greatly reduced, and meanwhile, the temperature control method has the advantages of high temperature curve response speed, small overshooting, short adjusting time and the like, and is particularly applicable to application occasions of various temperature control systems with high coupling.

Description

technical field [0001] The invention belongs to the related field of processing temperature control technology, and more specifically relates to a multi-channel decoupling temperature control method. Background technique [0002] In the production process of many industrial fields, temperature control plays a very important role, and compared with the control of industrial parameters such as pressure, flow, liquid level, etc., temperature control has the characteristics of large hysteresis and nonlinearity. The difficulty is greater, and the control effect is more difficult to grasp. For example, in industrial production processes such as multi-stage temperature control of injection molding machine barrels or multi-temperature zone control of industrial boilers, the traditional single-temperature zone temperature control system can no longer meet the increasingly updated production requirements. Therefore, the multiple-input multiple-output (MIMO) temperature control system ...

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Application Information

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IPC IPC(8): G05D23/19
Inventor 陈建魁黄真薛睿智程又来肖德卫
Owner HUAZHONG UNIV OF SCI & TECH
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