基于阶跃辨识的PID自整定研究及软件开发

Development of PID Self-tuning Software Based on Step Response Identification

工业过程控制中,一般通过实验试凑法整定控制器参数,这种方法不免带有一定盲目性且瞬态性能指标不够理想;为了让控制器更高效、实用,需要对被控对象模型有精准的辨识,整定出与系统被控对象相吻合的PID控制器参数;以工程应用为出发点,通过深入研究PID自整定技术原理和实际的工程应用,实现了基于阶跃辨识的PID自整定的软件开发,并通过改变对象模型PID参数,验证了该软件系统的稳定性及准确性。

In the industrial process control, engineers generally obtain the controller parameters by trial and error method. This approach cannot help with certain blindness and the transient performance is less than ideal. In order to make the controller more efficient and practical, the plant model need to be identified accurately and get the PID controller parameters which coincide with the system controlled object. From the engineering applications as a starting point, by studing the PID self-tuning technical principles and practical engineering applica tions in depth, to achieve a step-based self-tuning PID identification of software development. And by changing the PID parameters, to verify the stability and accuracy of the software system,