Method for designing inner mould self-setting digital controller

Abstract

The present invention adopts single-order plus dead-time model; said upper computer controlling output panel control board key to make systems operation on ' identifying stage ', at this point, the relay identifying link switched into closed loop system; under action of relay link, after beginning systems operation, at short notice establishing limit loop; according to real-time measurement to relay output each parameter and biasing relay feed-back identifying formulae to calculate out system identifying three parameters: K, Theta and Pi, and storing in RAM. According to identified model parameter, system calculates each parameter of novel internal mold controller, computational result stored in RAM memory unit, the obtained model and internal mold controller parameter loading in each link in real production process. The present invention realizes the self calibration of digit internal mold controller, reducing hardware cost and raising systematical mobility, reliability and accuracy.

Description

technical field [0001] The invention relates to a method in the technical field of industrial process control, in particular to a design method of an internal model self-tuning digital controller. Background technique [0002] In 1979, the internal model control structure (IMC) was first proposed by Brosilow based on Smith's predictive compensation control principle, and then Carcia and MorariGarcia proposed a unified basic structure starting from the typical single-input single-output system block diagram, the internal model Control technology has been applied in many industrial control processes, and it is recognized as one of the most suitable advanced control methods for industrial practical applications. However, there are three difficulties in the current application: When engineers and technicians apply traditional manual tuning controllers It is impossible to know how to effectively and quickly adjust the controller parameters to achieve a compromise between system p...

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Problems solved by technology

[0002] In 1979, the internal model control structure (IMC) was first proposed by Brosilow based on Smith's predictive compensation control principle, and then Carcia and MorariGarcia proposed a unified basic structure starting from the typical single-input single-output system block diagram, the internal model Control technology has been applied in many industrial control processes, and it is recognized as one of the most suitable advanced control methods for industrial practical applications. However, there are three difficulties in the current application: When engineers and technicians apply traditional manual tuning controllers It is impossible to know how to effectively and quickly adjust the controller parameters to achieve a compromise between system performance and robustness. How to adjust and improve the robust stability and nominal output response in the industrial control process is also a current control problem. How to effectively The application of internal model control technology to large time-delay systems has not been completely resolved.

[0003] It should be pointed out that since most of the current research focuses on parameter estimation and convergence analysis, and ignores the test signal design in the identification method, the research on test experiments and model validity verification is precisely the combination with practical applications. the closest aspect

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