Robust receding horizon control for constrained uncertain LFT systems with bounded disturbance

  • Authors:
  • Fen Wu;Youhua Chen

  • Affiliations:
  • North Carolina State University, Raleigh, NC;North Carolina State University, Raleigh, NC

  • Venue:
  • CA '07 Proceedings of the Ninth IASTED International Conference on Control and Applications
  • Year:
  • 2007

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Abstract

In this paper, we consider the problem of synthesizing robust state feedback control law for constrained uncertain LFT systems with bounded disturbance. A new Receding Horizon Control (RHC) scheme is proposed to achieve optimal H∞ performance over a finite horizon N. The cost is minimized over control policies and maximized over uncertainties and disturbances to yield a feedback control strategy. The control gains on the moving window will be used as decision variables to reduce conservatism and improve performance. Closed-loop stability and feasibility are guaranteed by introducing a terminal cost Vf and terminal constraint set Xf derived from off-line robust control. The RHC synthesis condition is formulated as a set of LMIs, which can be solved efficiently on-line.