Operating point selection in multimodel controller design

Gap metric for selecting operating points in multimodel controller design is discussed and extended to accommodate the performance requirement. It is shown that the loop-shaping /spl Hscr//sub /spl infin// approach can integrate the procedure of selecting operating points and the local controller design. The local controllers can guarantee not only stability but also performance specified by the pre- and/or post-compensators. Thus, at each operating points, local controllers can have similar performance, and the global performance of the system can be predicted.