15th Triennial World Congress of the International Federation of Automatic Control
  Barcelona, 21–26 July 2002 
PDF-SHAPING CONTROL DESIGN
Michael G. Forbes* Martin Guay**,1 J. Fraser Forbes*
* Department of Chemical & Materials Engineering, University of
Alberta
** Department of Chemical Engineering, Queen’s University

Stochastic control design techniques found in the chemical process control literature generally focus on the reduction of state or output variance to improve process operation. Most of these techniques address the problem of minimizing a quadratic cost function subject to linear process dynamics. In these cases, a linear feedback control law results and the disturbance, state and output PDF’s are Gaussian. In this paper, the problem of control design for nonlinear stochastic processes and nonsymmetric, nonquadratic cost functions is addressed. A control design technique is presented for first-order, discrete-time processes with a single input and additive Gaussian white noise.
Keywords: Non-Gaussian processes, Nonlinear systems, Feedback control methods, Stationarity, Stochastic control, Discrete-time systems

1corresponding author: E-mail: guaym@chee.queensu.ca

E-mail: mike.forbes@ualberta.ca
Session slot T-Mo-M21: Posters of Industrial Applications/Area code 7a : Chemical Process Control