Ripple Minimization for Harmonic-geared Series Elastic Actuator under Force Control
Issued Date
2020-09-14
Citation
Kang, Woosong. (2020-09-14). Ripple Minimization for Harmonic-geared Series Elastic Actuator under Force Control. IEEE 16th International Workshop on Advanced Motion Control (AMC), 279–284. doi: 10.1109/AMC44022.2020.9244303
Type
Conference Paper
ISBN
9781728131894/20
ISSN
1943-6572
Abstract
This paper develops an accurate force control algorithm an reduce the effect of torque ripple for the Series Elastic Actuators (SEA). The harmonic drive is a geared system which is widely utilized in actuators such as SEA. However, it becomes a big challenge to achieve highly accurate force control performance in SEA because of harmonic drive torque ripple. In this study, the harmonic drive ripple model is analyzed and characterized. The derived model is utilized to minimize the effect of ripple with force observation and controller for SEA. Experimental verifications are conducted to evaluate the performance of the proposed algorithm.
