Developed Adaptive Control System Design with a Model-Free External Loop as a Compensator

Adaptive control system in dealing with the controlled plant with some unmodeled dynamics has his bad performance and deficiencies. To overcome this proposing a the adaptive control system with a Model-Free external loop as a compensator has been proposed. It consists of two feedback loops, one is the traditional adaptive feedback loop, called inner loop. The other is called model-free adaptive control(MFAC) based external loop, which is used to serve as a compensator for system tracking error caused by time-varying parameters and model mismatch and unmodeled dynamics. The method has very simple configuration. This paper have developed the method, added an control function combination, so that the method has improved the control precision. Simulation results have demonstrated the efficiency of the developed method.