Modified Cascade Controller Design for Unstable Processes With Large Dead Time

IEEE Access

Karthik Chandran¹  Yunyoung Nam²  Saravanakumar GURUSAMY³  Rajalakshmi Murugesan⁴  Mohamed Abouhawwash⁵  Anand Nayyar⁶  Sanjeevi Pandiyan⁷  K. Asan Mohideen⁸ 

[1] Department of Automation, Shanghai Jiao Tong University, Shanghai, China;Department of Computer Science and Engineering, Soonchunhyang University, Asan, South Korea;Department of Electrical and Electronics Technology, Federal TVET Institute, Addis Ababa, Ethiopia;Department of Electronics and Instrumentation Engineering, Kamaraj College of Engineering and Technology, Madurai, India;Department of Mathematics, Faculty of Science, Mansoura University, Mansoura, Egypt;Graduate School, Duy Tan University, Da Nang, Vietnam;Key Laboratory of Advanced Process Control for Light Industry, Ministry of Education, Jiangnan University, Wuxi, China;Thamirabarani Engineering College, Tirunelveli, India;

关键词: Series cascade control;    unstable time-delay process;    fractional-order PI/PD;    internal model control;    convex stability region;   

DOI  :  10.1109/ACCESS.2020.3019027

来源: DOAJ

【 摘 要 】

In this article, a simple controller design with the fractional order calculations applies to unstable cascade processes with a significant time delay. Series cascade control system consists of two loops in which the inner loop is designed using the IMC principle based on the synthesis method. The primary controller is designed with the FOPI-FOPD controller to ensure stable and satisfactory closed-loop performances for the unstable processes. For the primary controller, five tuning parameters are involved, which tuned using the centroid of the convex stability region method. Different examples are given to illustrate the superiority of the proposed design over some existing designs. Results obtained from simulation reveals that with the proposed control design, enhanced closed-loop control performances are obtained for nominal and perturbed conditions.

【 授权许可】

Unknown