Design and Application of Controllers and Observers for Disturbance Minimization and Pole Assignment

[+] Author and Article Information
S. L. Shah, D. E. Seborg, D. Grant Fisher

Department of Chemical Engineering, University of Alberta, Edmonton, Alberta, Canada T6G 2G6

J. Dyn. Sys., Meas., Control 102(1), 21-27 (Mar 01, 1980) (7 pages) doi:10.1115/1.3140617 History: Received September 04, 1979; Online July 21, 2009


A new design method for state feedback controllers which minimizes the effects of arbitrary disturbances on selected outputs is presented. The design procedure permits arbitrary assignment of closed-loop eigenvalues and is based on the minimization of a quadratic performance index which includes a term for disturbance transmittances. Two numerical examples and an experimental application to a pilot scale, double effect evaporator are included to show that the resulting control systems are practical and robust. This design method can also be used to design robust observers for systems with unknown and unmeasured disturbances.

Copyright © 1980 by ASME
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