| Issue |
MATEC Web Conf.
Volume 157, 2018
Machine Modelling and Simulations 2017 (MMS 2017)
|
|
|---|---|---|
| Article Number | 03003 | |
| Number of page(s) | 9 | |
| Section | Machine dynamics and multibody systems simulations | |
| DOI | https://doi.org/10.1051/matecconf/201815703003 | |
| Published online | 14 March 2018 | |
Electromagnetic angular positioner based on DC micromotor
Warsaw University of Technology, Faculty of Mechatronics, Institute of Micromechanics and Photonics, ul. Boboli 8, 02-525 Warszawa, Poland
* Corresponding author: m.bodnicki@mchtr.pw.edu.pl
The presented works concerned launching of an angular positioner powered by an electromagnetic actuator, designed for performing angular micromovements within a range of few microradians. The principle of operation is based on balancing the electromagnetic torque of the motor with a torque that is twisting a compliant element. As electrodynamic actuators have no distinguished controlled positions, therefore in typical positioning systems desired positions are obtained applying a closed-loop position control. Usually, such systems employ also a feedback (dumping) related to velocity of the moving elements, what simplifies forming of dynamics of the system. The design of the physical model employs a DC micromotor, whose rotor is coupled with a torsional torquemeter. A feedback signal is generated by resistive strain gauges. The paper presents a mathematical model of the positioning system, results of simulation study as well as results of experimental study. The simulation study indicates that it is possible to select such design features and such type of the micoromotor that a high dynamics of positioning is ensured.
Key words: angular positioning / DC micromotor / torque meter / simulation tests / test stand
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
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