Conference paper
Control and sensor techniques for PAD servo motor drive
The Piezoelectric Actuator Drive (PAD) is a new type of electrical motor that employs piezoelectric multilayer actuators coupled with a form-fitted micro-mechanical gearing to generate rotary motion. The PAD is precise, having a positioning error of less than 2 arc-seconds. Its typical output torque is 4 Nm, without any additional gearing.
The whole motor is fully non-magnetic, enabling its use in applications where magnetic neutrality is of importance. The main challenges of the PAD are the hysteretic behavior of the ceramic actuators used and their highly capacitive nature. After compensating for the hysteretic behavior, the current waveforms of the motor can be used to extract all necessary parameters for sensorless operation.
Moreover, these signals provide a qualitative information about the precision in motor centering and show any mismatch between the actuators used.
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 2015 |
| Pages: | 1-5 |
| Proceedings: | 50th International Universities Power Engineering Conference |
| ISBN: | 1467396575 , 1467396826 , 1467396834 , 9781467396578 , 9781467396820 and 9781467396837 |
| Types: | Conference paper |
| DOI: | 10.1109/UPEC.2015.7339868 |
| ORCIDs: | Zsurzsan, Tiberiu-Gabriel , Zhang, Zhe , Andersen, Michael A. E. and Andersen, Nils Axel |
Actuators Ceramics Hysteresis motors Magnetic hysteresis Magnetic resonance imaging PAD PAD servo motor drive Shafts ceramic actuators compensation control electrical motor form-fitted micromechanical gearing hysteresis hysteretic behavior machine control magnetic neutrality motor motor drives multilayer actuator piezoelectric actuator drive piezoelectric motors piezoelectric multilayer actuators position control sensor techniques servomotors
