ABSTRACT
Pulse drive motors are used in imaging systems, inchworms and impulse drive motors, piezoelectric relays, automobile adaptive suspension systems, and inkjet and diesel injection valves. Low-permittivity actuator materials (soft PZTs) are essential for these applications, due to the requirement of small capacitance for realizing low current to the devices from the power amplifier used in these sudden operation systems. Vibration overshoot and ringing are critical drive/control issues for this class of devices; thus, effective means of suppressing these detrimental effects will also be considered in this chapter. Refer to Section 5.4. The pulse width or rise time must be adjusted to exactly match the resonance period of the actuator system to eliminate vibrational ringing.
