A model reference hybrid adaptive control

Nowadays, VLSI technology has provided the high performance digital devices as well as analog devices. By mixing the discrete control and the analog control called hybrid control has been applied to various systems, such as robotic system, automotive power-train systems, computer disk drives and the adaptive system. This paper presents a hybrid adaptive control to adapts the closed loop system including the plant with variation parameter to match with the reference model. The adaptive analog controller consists of a set of analog gain controller and a switching controller. The switching controller selects a controller from the set of analog controller and connects it into the closed loop controlled system suitably. The duty rate of each analog controller will adapt the closed loop controlled system to be coincided with a reference model in reasonable sense. The simulation results show the effectiveness of proposed hybrid adaptive control.