Multivariable predictive control method with firing system based on pulse response die

An impulse response model and predictive control technology, applied in adaptive control, general control system, control/regulation system, etc., to achieve the effect of improving equipment operation rate, simplifying modeling steps, and reducing prediction errors

Inactive Publication Date: 2010-06-23
ZHEJIANG UNIV
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Problems solved by technology

There are few related researches in China, mainly for the stage of simulation and theory

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  • Multivariable predictive control method with firing system based on pulse response die
  • Multivariable predictive control method with firing system based on pulse response die
  • Multivariable predictive control method with firing system based on pulse response die

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Embodiment Construction

[0028] The purpose and effects of the present invention will become more apparent by referring to the accompanying drawings in detail of the present invention.

[0029] The predictive control method of the present invention is mainly applied to figure 1 The cement production firing system shown, the specific implementation method is as follows:

[0030] 1. Multivariate prediction model based on impulse response

[0031] The predictive control algorithm of the present invention adopts the impulse response non-parametric model of the characteristics of the controlled system as the internal predictive model. figure 2 The input-output relationship diagram of the variables is given, in which the coal feeding amount of the calciner, the coal feeding amount of the kiln head and the opening of the tertiary air valve are taken as the operating variables, the raw meal feeding amount is used as the disturbance variable, and the O2 content at the outlet of the top cyclone , the CO con...

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Abstract

The present invention discloses a multivariable predictive control method with a firing system based on a pulse response die, which belongs to the field of industrial automatic control. The multivariable predictive control method with a firing system based on a pulse response die mainly comprises the steps of the building of the pulse response die and the design of a predictive control loop. The pulse response die based on a constrained least square method is built according to the on-site data and the system mechanism of the firing system. The future time output of the firing system is predicted by the pulse response die according to the current input and output of the firing system and the input of a future time system, and the better operating value of the current time of the firing system is obtained by solving a quadratic optimal problem according to a predictive control mechanism by combining set value output by the firing system and constrained conditions; after the better operating value is filtered, the better operating value is applied to the firing system to enable the firing system to work in the optimal state and finish one control circulation; the above step is repeated at the nest time to finish the rolling optimization of predictive control and ensure the stable and optimal running of the firing system in concrete production.

Description

technical field [0001] The invention relates to the field of industrial automatic control, in particular to a multivariable predictive control method for a firing system based on an impulse response model. Background technique [0002] In cement production, the sintering process in which raw materials are preheated, decomposed and calcined into clinker is the most important and complex process, in which complex physical and chemical changes are intertwined, with large lags, uncertainties and multiple Characteristics of variable systems. Conventional control methods generally do not work well. Therefore, scholars at home and abroad have done a lot of research on the application of advanced control strategies to kiln systems (especially rotary kiln systems). The advanced control strategy widely used is fuzzy control. Due to the transformation of the firing process to the new dry process, the rotary kiln production line with suspension preheater (or preheating cyclone) and p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/02
Inventor 颜文俊张进锋孟濬郑军李沛然蔡宁
Owner ZHEJIANG UNIV
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