Analysis of Filter Properties and Responses on Two Kinds of Signals of Piezoelectric Vibrators

The filter properties and the driving principle on piezoelectric vibrators were theoretically analyzed.Both disadvantages and advantages of square wave in powering vibrators were stated,and different responses of piezoelectric vibrators on the two kinds of waves were analyzed through experiments.The results expatiated that the filter of piezoelectric vibrators has relation with vibration modes;Influence of higher harmonics on piezoelectric vibrators can be neglected.