Design and Development of DC-DC Converter System to Drive a PZT Stack Actuator

Basically, piezoelectric PZT, or lead zirconate titanate (Pb [Zr(x) Ti (1−x)] O3), is one of the world’s most widely used piezoelectric ceramic materials as Advanced Devices. When the deformation occurs in PZT than that can be used as an actuator to drive or control the devices. The present work deals with the development and control of a converter to drive piezoelectric actuators. To generate the required force in the piezoelectric ceramics, high voltages are needed. That can be achieved by designing a bidirectional buck-boost converter. The converter is controlled by means of PWM control strategy. The output of the converter is given to the power amplifier to get high-power output and gain. The design is made to drive the PZT Stack actuator. The design is verified by PSpice simulations.