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介绍了一种新型低压压电陶瓷相移器及其驱动电路的原理、结构和标定方法，并简述了它在电子散斑干涉计量（ＥＳＰＩ）中的应用。
The principle, structure and calibration method of a new low voltage piezoelectric ceramic phase shifter and its driving circuit are introduced, and its application to ESPI is briefly described.