ISA Interchange

Welcome to the official blog of the International Society of Automation (ISA).

All Posts

Robust PID Controller Design for Non-Minimum Phase Time Delay Systems

This post is an excerpt from the journal ISA Transactions. All ISA Transactions articles are free to ISA members, or can be purchased from Elsevier Press.

 

 

Abstract: A robust PID controller for a non-minimum phase system subject to uncertain delay time is presented in this paper. Utilizing the gain-phase margin tester method, a specification-oriented parameter region in the parameter plane that characterizes all admissible controller coefficient sets can be obtained. The PID controller gains are then directly selected from the parameter region. Henceforth, the designed controller can guarantee the system at least a pre-specified safety margin to compensate for the instability induced by the time delay. A compromise between the robustness and tracking performance of the system in the presence of time delay is achieved. Simulation results indicate that the proposed method performs a good time response, and robustness is obtained effectively.

Free Bonus! To read the full version of this ISA Transactions article, click here.

Enjoy this technical resource article? Join ISA and get free access to all ISA Transactions articles as well as a wealth of other technical content, plus professional networking and discounts on technical training, books, conferences, and professional certification.

Click here to join ... learn, advance, succeed!

2006-2018 Elsevier Science Ltd. All rights reserved.

 

Related Posts

Companies Ramp Up Production of N95 Masks in Response to COVID-19

COVID-19 has exponentially increased the need for N95 disposable masks in hospitals and medical facilitie...
Kara Phelps Apr 3, 2020 5:15:00 AM

Newsweek Vantage Report on Cyber Risks to Critical Infrastructure: ISA's the Expert Partner

Newsweek Vantage recently published an independent report on cyber risks to critical infrastructure—and t...
Kara Phelps Mar 24, 2020 3:11:27 PM

Auto Manufacturers Could Build Ventilators: The Power of Standards in a Global Crisis

As COVID-19 shutters manufacturing plants in North America and around the world, GM, Ford, and Tesla are ...
Kara Phelps Mar 19, 2020 1:49:27 PM