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PID控制因其结构简单,鲁棒性好等特点,得到了工业界的广泛认可。而控制器的性能直接影响到生产过程的运行和产品的质量,控制器参数的整定至关重要,所以对PID参数整定方法的研究有很重要的意义,而继电整定算法是较有代表性的一种算法。文章基于继电器反馈对PID控制器参数自整定方法进行了研究,通过分析对象在继电特性作用下的输入输出响应曲线的波形,利用面积法估算得到系统的临界周期和振幅,并最终求得理想的PID控制参数。
Because of its simple structure, good robustness and other characteristics, PID control has been widely recognized by the industry. The performance of the controller has a direct impact on the operation of the production process and the quality of the product. The tuning of the controller parameters is very important, so it is very important to study the tuning method of the PID parameters. The relay setting algorithm is more representative An algorithm. Based on the feedback of relay, the self-tuning method of PID controller is studied. By analyzing the waveform of the input-output response curve under the relay characteristic, the critical period and amplitude of the system are estimated by the area method, and finally the ideal PID control parameters.