史密斯预估器的鲁棒调整方法

提出了模型不确定时史密斯预估器的鲁棒PID调整.引入了等效增益脉冲时间延迟(EGPTD)的概念,并用于史密斯预估器的PID调整中的鲁棒稳定性控制.由于二阶脉冲时间延迟(SOPTD)系统广泛地用于描述工业过程,特别地开发了鲁棒调整在该系统中的应用.推荐的调整方法可以处理模型的所有参数同时不确定的情况.另一个重要的特点是本方法可以利用有效的PID调整规律.提供的仿真结果表明了本方法的正确性.

Robust Tuning Method for the Smith Predictor

It presents robust PID tuning for the Smith predictor in the presence of model uncertainty. The concept of the equivalent gain plus time delay (EGPTD) is introduced to incorporate robust stability in PID tuning of the Smith predictor. In particular, an application is developed for the robust tuning of the second order plus time delay (SOPTD) system because the system has been used extensively to describe industrial processes. The proposed tuning method can cope with simultaneous uncertainties in all parameters of the model in an efficient manner. Another important and attractive feature of the method is that it can utilize many currently available PID tuning rules. Simulation results are provided to demonstrate the availability of the method.