Scheduled System Maintenance:
Some services will be unavailable Sunday, March 29th through Monday, March 30th. We apologize for the inconvenience.
By Topic

Performance and gain and phase margins of well-known PI tuning formulas

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Ho, W.K. ; Nat. Univ. of Singapore, Singapore ; Hang, C.C. ; Zhou, J.H.

The performance and robustness of well-known proportional-integral formulas are discussed. Tuning formulas that optimize load disturbance response have gain and phase margins that are smaller than those that optimize for setpoint response. Tuning formulas that optimize setpoint response mostly make use of the PI controller zero to cancel the process pole. They typically have a gain margin of three and a phase margin of 60 degrees. The Ziegler-Nichols tuning formula gives phase margin that varies greatly. Hence its performance varies greatly too. Approximate analytical formulas to compute gain margin and phase margin are also derived in this paper to facilitate online computation which could be particularly useful for implementing adaptive control or auto-tuning

Published in:

Control Systems Technology, IEEE Transactions on  (Volume:3 ,  Issue: 2 )