We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Energy efficient bipedal robots walking in resonance.
- Authors
Bauer, F.; Fidlin, A.; Seemann, W.
- Abstract
This contribution presents a method to improve the energy efficiency of walking bipedal robots over 50% in a range of speed from 0.3 to 2.3 m/s by the use of constant elastic couplings. The method consists of modeling the robot as underactuated system - so that it is making use of its natural dynamics instead of fighting against it - controlling its joint-angle trajectories with input-output feedback linearization and optimizing the joint-angle trajectories as well as the elastic couplings numerically. The mechanism of minimizing energy expenditure consists of reducing impact losses by choosing smaller steps, which gets favorable by a higher natural frequency due to elastic couplings. The method is applied to a planar robot with upper body, two stiff legs, two actuators in the hip joints and one simple rotational spring between the legs as elastic coupling. The mechanism of energy expenditure is investigated for the robot with and without elastic coupling between legs in detail.
- Subjects
MOBILE robots; STRUCTURAL optimization; NONLINEAR control theory; ELECTRONIC linearization; ACTUATORS; ASIMO (Robot)
- Publication
ZAMM -- Journal of Applied Mathematics & Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, 2014, Vol 94, Issue 11, p968
- ISSN
0044-2267
- Publication type
Article
- DOI
10.1002/zamm.201300245