Synthesis of low order μ controllers using statistical iteration

This paper introduces the integration of robust control and quality control. This methodology can be applied to determine control parameters in different controller structures to meet stability and performance robustness requirements. Based on matrix experiments, a statistical iterative scheme of μ synthesis is proposed. In this statistical solution, μ controller structures are fully flexible and controller orders will not increase during iterations. In addition, it can reveal the directions of parameter changes which may lead to improvements in the performance of the resulting controllers. Statistical interpretations and systematic procedures for this quality-orientated control design are outlined in this paper