Bae Jeong Eun, Kim Kyeong Hoon, Chu Syng Chul, Heo Jaepil, Lim Sanghun, Sung Su Whan
Department of Chemical Engineering, Kyungpook National University, 80, Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea.
ACS Omega. 2020 Dec 11;5(50):32597-32607. doi: 10.1021/acsomega.0c04927. eCollection 2020 Dec 22.
A cascade control system comprising the primary and secondary controllers suffers from a cascade-type integral windup problem in which the output saturation of the secondary control loop can considerably increase the integral part of the primary control loop. In this paper, we present a new predictive antiwindup technique that can completely eliminate the possibility of secondary controller output saturation, resulting in no cascade-type integral windup phenomenon. The proposed method does not require any type of process models; thus, its implementation is simple and straightforward, which is a very favorable advantage compared to the model-based antiwindup techniques from the practical viewpoint. Our simulation confirms that the proposed method can completely remove the primary controller's cascade-type integral windup resulting from the saturation of the secondary controller output. Further, the proposed method exhibited good control performance without needing any type of process model for the various types of processes and controllers. Our experimental study successfully demonstrated that there are no problems in applying the proposed method to real plants.
一个由主控制器和副控制器组成的串级控制系统存在串级型积分饱和问题，即副控制回路的输出饱和会显著增加主控制回路的积分部分。在本文中，我们提出了一种新的预测抗饱和技术，该技术可以完全消除副控制器输出饱和的可能性，从而不会出现串级型积分饱和现象。所提出的方法不需要任何类型的过程模型；因此，其实现简单直接，从实际角度来看，与基于模型的抗饱和技术相比，这是一个非常有利的优势。我们的仿真证实，所提出的方法可以完全消除由于副控制器输出饱和而导致的主控制器的串级型积分饱和。此外，所提出的方法在不需要任何类型的过程模型的情况下，对于各种类型的过程和控制器都表现出良好的控制性能。我们的实验研究成功证明了将所提出的方法应用于实际工厂不存在问题。
