When the piezo stack in a piezo-actuator is hit with an electrical trigger, which of the following best describes the time required for a mechanical response?
A) almost instantly
B) lagged by time required to build field
C) lagged by time required to overcome counter electro-motive force (CEMF)
D) slower than an equivalent solenoid actuator

Question

Quizplus · Accepted Answer

The mechanical response of a piezo stack in a piezo-actuator to an electrical trigger is almost instantaneous. This is because the piezoelectric effect, which is the principle behind the operation of piezo-actuators, involves the material changing shape or size immediately upon the application of an electrical voltage, without any significant delay.

When the Piezo Stack in a Piezo-Actuator Is Hit with an Electrical