From one-legged hopping to bipedal running and walking: A unified foot placement control based on regression analysis

Yangwei You; Z. Li; D. G. Caldwell; N. G. Tsagarakis

doi:10.1109/IROS.2015.7354015

From one-legged hopping to bipedal running and walking: A unified foot placement control based on regression analysis

Yangwei You, Z. Li, D. G. Caldwell, N. G. Tsagarakis

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

This paper aims at developing a unified and adaptive foot placement control for legged robots. The locomotion control of legged robots can be classified into three parts as body height control, body attitude control, and forward velocity control. In our study, the body attitude is controlled at stance phase by the hip actuator, and the height is controlled by the motion of the stance leg. In this case, the foot placement has a nearly linear correlation with forward velocity. Hereby, a generic foot placement controller is developed to control the forward velocity based on the online linear regression analysis of their coupled correlation. Our proposed algorithm is capable of adjusting the control parameters automatically, and is featured by good adaptability and higher control accuracy that outperforms the empirical tuning. The very same controller is able to produce stable hopping with accurate forward velocity tracking even with unknown mass offset, as well as stable bipedal running and walking with accurate velocity tracking.

Original language	English
Title of host publication	Intelligent Robots and Systems (IROS), 2015 IEEE/RSJ International Conference on
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
Pages	4492-4497
Number of pages	6
ISBN (Print)	978-1-4799-9994-1
DOIs	https://doi.org/10.1109/IROS.2015.7354015
Publication status	Published - 1 Sep 2015

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10.1109/IROS.2015.7354015

http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=7354015

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You, Y., Li, Z., Caldwell, D. G., & Tsagarakis, N. G. (2015). From one-legged hopping to bipedal running and walking: A unified foot placement control based on regression analysis. In Intelligent Robots and Systems (IROS), 2015 IEEE/RSJ International Conference on (pp. 4492-4497). Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/IROS.2015.7354015

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From one-legged hopping to bipedal running and walking: A unified foot placement control based on regression analysis. / You, Yangwei; Li, Z.; Caldwell, D. G.; Tsagarakis, N. G.

Intelligent Robots and Systems (IROS), 2015 IEEE/RSJ International Conference on. Institute of Electrical and Electronics Engineers (IEEE), 2015. p. 4492-4497.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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