Guaranteed Accuracy Algorithm in <I>H</I><SUB>2</SUB> Optimal Tracking Controller Synthesis

  • KANNO Masaaki
    CREST, Japan Science and Technology Agency
  • HARA Shinji
    Graduate School of Information Science and Technology, The University of Tokyo

Bibliographic Information

Other Title
  • <I>H</I><SUB>2</SUB>最適追従制御設計問題の精度保証付き計算アルゴリズム
  • Guaranteed Accuracy Algorithm in H2 Optimal Tracking Controller Synthesis


In this paper an algorithm with guaranteed accuracy is developed for the SISO H2 optimal tracking problem for a step reference signal. The algorithm utilizes a computer algebra system and interval arithmetic for the achievement of a stringent requirement of guaranteed accuracy. It also makes use of some strucural properties of the solution to the problem in order to facilitate guaranteed accuracy computation. This paper first derives a general expression for the solution to the SISO H2 tracking problem, revealing some features of the solution useful for guaranteed accuracy computation. Then a guaranteed accuracy algorithm which computes the optimal cost and the controller that accomplishes it is developed by exploiting the features along with some tools for guaranteed accuracy computation. Numerical examples are used to demonstrate the algorithm.


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