Automatic learning control-based gain parameter auto-tuning scheme for AC servo system

In this paper, an advanced control method of system parameter auto-tuning implementation for AC servo system using fuzzy reasoning logic with automatic learning control function is described. This control method includes three features: (i) it is not necessary to input some kinds of fuzzy rules to the AC servo system before starting auto-tuning operation; thus, the fuzzy rules can be automatically produced in the learning process; (ii) any knowledge and information about system parameter tuning technique are not required; and (iii) both high speed response and robustness can be obtained. The feasible effectiveness of this auto-tuning processing approach for AC servo system are practically confirmed through experimental results.