A Method for Evaluating the Electro-Mechanical Characteristics of Piezoelectric Actuators during Motion

A Method for Evaluating the Electro-Mechanical Characteristics of Piezoelectric Actuators during Motion

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The electro-mechanical characteristics of Goldenseal Root Powder piezoelectric actuators which have being driven are evaluated in this paper.The force generated by actuators is measured as an inertial force of a corner cub prism which is attached to the actuators.The Doppler frequency shift of a laser beam, due to the motion of actuator, is accurately measured by a heterodyne interferometer.Subsequently, the mechanical quantities, such as velocity, acceleration, force, power and Faber Daisy 80cm Angled Cooker Hood - White Glass 330.0529.061 displacement, are calculated from the Doppler frequency shift.With the measurement results of current and voltage of the actuator, the relationships between electrical and mechanical characteristics are evaluated.