DECENTRALIZED ROBUST-CONTROL DESIGN WITH INSUFFICIENT NUMBER OF CONTROLLERS

The paper studies the decentralized robust stabilization problem for a large-scale system which is composed of three subsystems. Each subsys tem may contain nonlinear and/or time-varying uncertainties and interc onnections; but one of these subsystems does not have direct control. We demonstrate a control design procedure where the interconnection ch aracteristic is fully utilized. By showing that it is possible to use the interconnection as a bridge to convey the influence of control, de centralized controls can be designed.