Digital Open-Loop Control of a Piezoelectric Valve for Household Appliances
Piezoelectric materials are widely used as sensors and actuators in many applications. They allow efficient digital control of mechanical systems, but suffer from nonlinearity and hysteresis. This chapter presents a new digital open-loop control of piezoelectric bender for real-time applications in domestic appliances, for which strong specifications are good accuracy and low cost. The control algorithm, implemented in a microcontroller, solves the problems of nonlinearity and hysteresis. The chapter presents experimental results of the prototype that has been realized in the Indesit Company laboratories for future applications on domestic appliances.
KeywordsPiezoelectric actuator Hysteresis Open-loop control
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