Design and Development of Piezo-Stepping Voltage Drive for Piezoelectric Stack Actuator

Abstract

Voltage and frequency control is the most common requirement to drive the piezoelectric stack actuators. Because of inefficient amplifiers and nonlinear behavior of piezoelectric stack actuator, control over the frequency and voltage of piezoelectric actuator is a difficult task. In this paper, a design of high-frequency drive circuit for piezoelectric stack actuator is presented. The drive circuit contains a high-frequency power electronic device to control the piezoelectric stack actuators with different frequency and constant pulse voltage. Output frequency response for multiple piezoelectric stack actuators is determined using MATLAB. Simulation is carried out to analyze drive circuit with electrical equivalent model of piezoelectric stack actuator. Experimental results are presented for single piezoelectric stack actuator driven at 100 V Vdd and frequency 100 and 50 Hz.