Optimal Disturbance Rejection

Host Institution:

RMIT University

Title of Seminar:

Optimal Disturbance Rejection

Speaker's Name:

Robin Hill (joint work with Yousong Luo and Uwe Schwerdtfeger)

Time and Date:

Friday 11 May 2012, 3.30pm (EST)

Seminar Abstract:

The problem of designing a controller to optimally reject persistent disturbances is discussed. Research in the area of robust control system design uses ideas from the mathematical description of linear systems, estimation and control, dynamic programming, and duality theory. Usually optimal controllers are sought from within some well defined class. The feedback mechanism may be restricted to being linear, for example; another choice to be made is that between state and output feedback.

After giving some idea of current understanding on these topics, I shall present some recent work by the authors which extends known results. Most of the literature to date finds approximate (sub)optimal controllers. We have extended the class of problems for which exact optimal solutions can be found by combining a primal/dual formulation with dynamic programming ideas. These solutions have the desirable feature of yielding a control law in feedback form. Some speculative comments on the relevance of this work to the duality between estimation and control will also be offered.

Seminar Convenor:

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How to participate in this seminar

 

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