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Control method of boiler combustion system based on multivariable pid-pfc

A technology of boiler combustion and control method, which is applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve problems such as the jump of fuel heat set value, achieve small calculation amount, solve the problem of poor control effect, fast track effect

Active Publication Date: 2018-06-26
SHANDONG SHENCHI PETROCHEM
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Problems solved by technology

It is difficult to find an ideal air-fuel ratio in practical applications, so this traditional control method cannot be realized when the fuel heat setting value jumps sharply

Method used

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  • Control method of boiler combustion system based on multivariable pid-pfc
  • Control method of boiler combustion system based on multivariable pid-pfc
  • Control method of boiler combustion system based on multivariable pid-pfc

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Embodiment Construction

[0040] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0041] The purpose of the present invention is to combine PID and predictive function control to obtain a new control method that can be applied to multi-input multi-output systems, introduce this method into boiler combustion control to replace traditional predictive function control, and provide a A new type of control strategy.

[0042] 1. Select basis function and reference trajectory

[0043] Predictive functional control regards the control input structure as the key to affect the system performance. In predictive function control, when the input signal spectrum is limited, the control input only belongs to a set of specific basis function families related to the reference trajectory and object properties, so the importance of the selection of basis functions can be imagined. In particular, the output for a linear system will be a weighted ...

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Abstract

The present invention discloses a boiler combustion system control method based on multivariable PID-PFC. The multivariable PID and the prediction function control are combined to obtain a novel control method applicable to a multiple-input-multiple-output system, the novel control method applicable to the multiple-input-multiple-output system is introduced to the boiler combustion control system to replace a traditional PID controller, and a novel control strategy is provided. The boiler combustion system control method based on the multivariable PID-PFC overcomes the disadvantages of poor tracking performance, large overshoot and large prompt drop after the interference existed in a traditional PID controller, and overcomes the deficiency large steady state error and large calculated amount caused by a plurality of primary functions. The boiler combustion system control method based on the multivariable PID-PFC is able to improve the running efficiency of the system in the steady-state operation of the boiler combustion system and improve the response speed of the system while optimizing the efficiency so as to allow the boiler combustion system to take into consideration the efficiency and the response performance in the whole operation process. In the practical application, the boiler combustion system control method based on the multivariable PID-PFC provides a novel and efficient control strategy.

Description

technical field [0001] The invention relates to the technical field of boiler combustion system control, in particular to a boiler combustion system control method based on multivariable PID-PFC. Background technique [0002] The level of science and technology in today's society is getting higher and higher. The gas boiler itself has many superior characteristics, and its control is simple, the method is quite flexible, and the transportation and assembly are convenient and easy. Therefore, it has a very bright application prospect and is an inevitable future trend. . The boiler system can be regarded as a complex model of multiple input multiple output (MIMO), literature [Zhang Zhenxing, Ding Bao. Research on intelligent control system of gas hot water boiler [D]. Harbin: Harbin Institute of Technology, 2006:14-21.Karnopp D C, Margolis D L, Rosenberg R C. System d-dynamics; modeling and simulation of mechatronic systems [M]. New York: John Wiley and Sons Inc, 2000: 46-52....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/04
CPCG05B13/048
Inventor 郭伟程才李涛陈琛魏妙
Owner SHANDONG SHENCHI PETROCHEM
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