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Article
Kernel learning adaptive one-step-ahead predictive control for nonlinear processes
Asia-Pacific Journal of Chemical Engineering (2008)
  • Yi Liu, Zhejiang University
  • Haiqing Wang, Zhejiang University
  • Ping Li, Zhejiang University
Abstract

A Kernel learning adaptive one-step-ahead Predictive Control (KPC) algorithm is proposed for the general unknown nonlinear processes. The main structure of the KPC law is twofold. A one-step-ahead predictive model is first obtained by using the kernel learning (KL) identification framework. An analytical control law is then derived from Taylor linearization method, resulting in an efficient computation for on-line implementation. The convergence analysis of the KPC control strategy is presented, meanwhile a new concept of adaptive modification index is proposed to improve the tracking ability of KPC and reject the unknown disturbance. This simple KPC scheme has few parameters to be chosen and small computation scale, which make it very suitable for real-time control. Numerical simulations compared with a well-tuned proportional-integral-derivative (PID) controller on a nonlinear chemical process show the new KPC algorithm exhibits much better performance and more satisfactory robustness to both additive noise and unknown process disturbance.

Keywords
  • Kernel Learning,
  • Predictive Control,
  • Nonlinear Processes
Publication Date
Winter December 5, 2008
Citation Information
Yi Liu, Haiqing Wang and Ping Li. "Kernel learning adaptive one-step-ahead predictive control for nonlinear processes" Asia-Pacific Journal of Chemical Engineering Vol. 3 Iss. 6 (2008)
Available at: http://works.bepress.com/inter_liu/1/