A dynamic matrix control method for the pressure controlled object of a nuclear power plant voltage stabilizer

Abstract

The invention relates to a dynamic matrix control method for a pressure controlled object of a nuclear power plant voltage stabilizer. The method comprises the following steps: (1) establishing a pressure controlled object model of the nuclear power plant voltage stabilizer; (2) controlling the pressure controlled object of the nuclear power plant voltage stabilizer Set the feedback channel and establish the pressure controlled object model of the nuclear power plant voltage regulator with self-balancing ability; (3) carry out simplified processing to establish a simplified model of the nuclear power plant voltage stabilizer pressure controlled object with self-balancing ability; (4) simplify the model Design a dynamic matrix controller to obtain a virtual real-time predictive control signal; (5) Obtain an actual real-time predictive control signal based on the virtual real-time predictive control signal to realize the dynamic matrix control of the pressure controlled object of the nuclear power plant voltage stabilizer. Compared with the prior art, the present invention can overcome the defects of the dynamic matrix control algorithm, improve the control quality of the traditional control method, and provide a method for realizing the dynamic matrix control of the controlled object with integral and delay links.

Description

technical field [0001] The invention relates to the technical field of control, in particular to a dynamic matrix control method of a controlled object with integral and delay links. Background technique [0002] In industrial process control, there are many controlled objects with large inertia, large delay, and difficulty in obtaining accurate mathematical models. For complex nonlinear systems with integral and delay links without self-balancing capabilities, the adjustment effect of traditional PID control methods is not enough. Ideal, but there are disadvantages such as slow response speed and large overshoot. [0003] Dynamic matrix control (Dynamic Matrix Control, DMC) is a predictive control algorithm based on the step response of the controlled object, which has lower requirements on the model, less computational complexity and stronger robustness. At present, the DMC algorithm can be directly used for controlled objects with self-balancing ability in industrial pro...

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Problems solved by technology

In order to solve this problem, scholars have conducted a lot of research, which can be divided into two categories: one is mainly research on the controlled object, such as decomposing the unstable model to obtain the stable part for DMC controller design, but it is limited to theoretical Solve the application problem of the algorithm; the other type mainly studies the algorithm itself, such as improving the iterative matrix of the DMC algorithm to solve the truncation error of the prediction model, but does not fully consider the acquisition of actual engineering signals

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