AUTOMATIC TUNING OF PHASE-LEAD AND PHASE-LAG COMPENSATORS

The automatic tuning of simple digital filters is discussed and an aut omatic tuning method is proposed for the phase-lead and phase-lag comp ensators in three steps. First, an appropriate test signal is automati cally generated by introducing a nonlinear element into the system. Se condly, the new gain crossover frequency and corresponding gain are es timated. Thirdly, the compensator parameters are determined by corresp onding formulae. The method can be easily implemented by microprocesso rs and will be found useful in a variety of applications.