Investigating the electromechanical coupling in Piezoelectric Actuator Drive motor under heavy load

Abstract

-The Piezoelectric Actuator Drive (PAD) is an accurate, high-torque rotary piezoelectric motor that employs piezoelectric stack actuators and inverse hypocycloidal motion to generate rotation. Important factors that determine motor performance are the proper concentric alignment between the motor ring and shaft and the similarity of the stack actuators used. This paper investigates the electromechanical coupling of these factors into the motor current through experimental means.

Optimum Phase Shift in the Self-Oscillating Loop for Piezoelectric-Transformer-Based Power Converters

“…Moreover, the intended final application of the converter is to drive a highly capacitive load at low frequencies, ranging from dc to 100 Hz in the form of a quasi-static piezoelectric motor. The motor is called Piezoelectric Actuator Drive (PAD) and is intended to be used inside an MRI chamber for precise positioning of the patient table within the bore of the scanner itself [23]. Therefore, the load range is narrow and quasistatic from the converter perspective as it essentially meant to operate in tracking dc mode.…”

Design of a yarn feeder based on a piezoelectric actuator

“…They have advantages such as silent operation, no electromagnetic noise, compact size, high holding torque, high response characteristics, high accuracy, high stability, and simple drive signals. 1,2 Scholars have conducted research on the mechanical performance of piezoelectric motors, 3 electromechanical coupling under heavy loads, 4 operation at the nanoscale, 5,6 performance analysis under high-speed conditions, 7 and have even designed robot fingers capable of complex movements through input superimposed signals. 8 Despite significant progress in the structural design of piezoelectric motors and related technology, the contradiction between the single structure of piezoelectric motors and the complexity of practical production environments has gradually become apparent.…”