A unifying Ziegler–Nichols tuning method based on active disturbance rejection. (21st October 2021)

• Record Type: Journal Article
• Authors: Nie, Zhuo‐Yun; Li, Zhaoyang; Wang, Qing‐Guo; Gao, Zhiqiang; Luo, Jiliang
• Other Names: Ma Dan guestEditor.; Niculescu Silviu‐Iulian guestEditor.; Guo Lei guestEditor.; Chen Jie guestEditor.
• Is Part Of: International journal of robust and nonlinear control. Volume 32:Number 18(2022)
• Page Start: 9525
• Page End: 9541
• Publication Date: 2021-10-21
• Subjects: active disturbance rejection -- disturbance rejection PID -- PID control -- Ziegler–Nichols tuning; Automatic control -- Periodicals; Control theory -- Periodicals; Nonlinear systems -- Periodicals; 629.836
• DOI: 10.1002/rnc.5848
• Languages: English
• ISSNs: 1049-8923

Abstract

Abstract: The landmark Ziegler–Nichols (ZN) tuning method from 1942 for proportional‐integral‐derivative (PID) controller has had significant impacts on the industrial control industry to this day, even though it is thought to be an empirical method with little theoretical justifications. The situation has not changed much despite the fact that a large amount of research and applications has been reported over decades. This paper shows for the first time that the ZN tuning can be incorporated into the framework of active disturbance rejection (ADR), where the process dynamics is made to match the desired one. This leads to a unifying tuning method for the recently proposed disturbance rejection PID (DR‐PID) controller, applicable to a wide range of industrial processes. Unlike the original ZN method, this new tuning method can be fully understood by the practitioner in their own language of bandwidth and phase characteristics. Moreover, it can also be fully validated via rigorous stability analysis. Finally, extensive simulation results are provided to illustrate the effectiveness of the unifying ZN tuning method.