Intelligent PID control device

Abstract

The invention discloses an intelligent PID (Proportion Integration Differentiation) control method. The method comprises the following steps: acquiring initial control parameters set by a user and working parameters of a control unit; the acquired working parameters are transmitted in real time; the working parameters are correspondingly adjusted in real time according to the working parameters transmitted in real time, so that the working parameters are consistent with the set values; taking a set target value and an actual value deviation e of the regulation and control parameter object as an input quantity; comparing working parameters in the working links according to a preset program; the input quantity is subjected to proportional control, integral control and differential control, and the output quantity is synthesized; according to the intelligent PID control device, the single-chip microcomputer serves as a control unit, PID control is achieved through an intelligent algorithm, automatic PID parameter setting and automatic combination of proportional differential (PD), proportional integral (PI) and PID control modes can be achieved through the intelligent PID control device, and the intelligent PID control device is high in control precision, convenient and rapid to use and high in execution efficiency.

Description

technical field [0001] The invention relates to the technical field of PID control, in particular to an intelligent PID control device. Background technique [0002] In modern industrial control, PID controllers controlled by proportional, integral and differential deviations are widely used. This PID closed-loop control method is simple in principle, high in robustness, good in stability, reliable in operation, convenient in adjustment and effective in control. It has become one of the main technical means of industrial control. With the development of the computer industry, the improvement of the performance of the single-chip microcomputer and the expansion of the application field of programming languages, the single-chip microcomputer is used as the control unit, and the intelligent programmable PID has been applied. The algorithm can realize automatic tuning of PID parameters, with high control accuracy, convenient and fast use and high execution efficiency. [0003] ...

AI Technical Summary

Problems solved by technology

[0003] For the traditional PID control device, before it is put into operation, the PID parameters Kp, Ki, Kd, ​​Ti, Td must be adjusted to achieve the best control effect. If the PID parameters are not well adjusted, it is difficult to achieve the ideal control effect. The parameters Kp, Ki, Kd, ​​Ti, and Td in the existing traditional PID adjustment algorithm are difficult to adjust, the system output response is slow, the overshoot is large, and there are steady-state errors, etc.

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