By Topic

Optimal control of first order linear systems with fixed proportional-integral structure controller

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

2 Author(s)
Hoang Bao Le ; Grenoble Inst. of Technol. (Grenoble INP), Valence ; Mendes, E.

This paper proposes a new semi-analytic robust mixed H2/H-infinity design method for fixed structure controllers (i.e. PID, the most widely used structure in industry). Precisely, the method consists in determining the parameters of a given structure controller that minimizes the influence of a step load disturbance to the process output with the respect of robustness constraints, i.e. constraints on maximum amplification of measurement noise, minimum module margin and minimum phase margin. The design objective and the robustness constraints are expressed as H2 and H-infinity norms in function of unknown controller parameters. The controller design problem is then reformulated into a nonlinear optimization problem with a set of inequality constraints that can be efficiently solved numerically. Finally, we obtain a controller design tool which provides, when it exists, the unique optimal controller that fulfills the design specifications. The method is based on generic models that can represent common industrial plants. Further, the proposed method enables a graphical representation of the different design tradeoffs. To demonstrate the results, we apply this method for first order processes controlled by PI controller.

Published in:

Control, Automation, Robotics and Vision, 2008. ICARCV 2008. 10th International Conference on

Date of Conference:

17-20 Dec. 2008