The H/sup /spl infin// robust adaptive control for linear permanent magnet synchronous servo motor (LPSM)

The H/sup /spl infin// robust control law has been combined with the robust parameter estimator for the first time in this paper. The adaptive controller formed is applied in the speed control for LPSM. The global stability can be guaranteed when parametric uncertainties, bounded disturbance and unmodeled dynamics exist at the same time. Besides, the ability to suppress disturbances is better. The demands on precise control for LPSM with multifold uncertainties are satisfied in the proposed scheme, which has the best pertinence. The results of simulations indicate the proposed system has strong robustness and the control effects are excellent.