Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, I. Lučića 5, HR-10000 Zagreb, Croatia.
INA-Oil Industry d.d. - Sisak Oil Refinery, Ante Kovačića 1, HR-44000 Sisak, Croatia.
ISA Trans. 2014 Jan;53(1):85-96. doi: 10.1016/j.isatra.2013.08.011. Epub 2013 Sep 12.
This paper presents a novel method of PID controller tuning suitable for higher-order aperiodic processes and aimed at step response-based auto-tuning applications. The PID controller tuning is based on the identification of so-called n-th order lag (PTn) process model and application of damping optimum criterion, thus facilitating straightforward algebraic rules for the adjustment of both the closed-loop response speed and damping. The PTn model identification is based on the process step response, wherein the PTn model parameters are evaluated in a novel manner from the process step response equivalent dead-time and lag time constant. The effectiveness of the proposed PTn model parameter estimation procedure and the related damping optimum-based PID controller auto-tuning have been verified by means of extensive computer simulations.
本文提出了一种适用于高阶非周期过程的 PID 控制器整定新方法，旨在实现基于阶跃响应的自动整定应用。PID 控制器的整定基于所谓的 n 阶滞后 (PTn) 过程模型的辨识和阻尼最优准则的应用，从而便于直接根据闭环响应速度和阻尼来调整。PTn 模型的辨识基于过程阶跃响应，其中以新颖的方式从过程阶跃响应等效死区时间和滞后时间常数中评估 PTn 模型参数。通过广泛的计算机仿真验证了所提出的 PTn 模型参数估计过程和相关的基于阻尼最优的 PID 控制器自动整定的有效性。
