On periodically pendulum-diven systems for underactuated locomotion: A viscoelastic jointed model

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Authors: Liu, P., Yu, H. and Cang, S.

http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=7301994

Journal: ICAC

Pages: 1-6

Publisher: IEEE

ISBN: 978-0-9926-8011-4

DOI: 10.1109/IConAC.2015.7313936

This source preferred by Shuang Cang and Hongnian Yu

This data was imported from Scopus:

Authors: Liu, P., Yu, H. and Cang, S.

Journal: 2015 21st International Conference on Automation and Computing: Automation, Computing and Manufacturing for New Economic Growth, ICAC 2015

ISBN: 9780992680107

DOI: 10.1109/IConAC.2015.7313936

© 2015 Chinese Automation and Computing Society in the UK - CACS. This paper investigates the locomotion principles and nonlinear dynamics of the periodically pendulum-driven (PD) systems using the case of a 2-DOF viscoelastic jointed model. As a mechanical system with underactuation degree one, the proposed system has strongly coupled nonlinearities and can be utilized as a potential benchmark for studying complicated PD systems. By mathematical modeling and non-dimensionalization of the physical system, an insight is obtained to the global system dynamics. The proposed 2-DOF viscoelastic jointed model establishes a commendable interconnection between the system dynamics and the periodically actuated force. Subsequently, the periodic locomotion principles of the actuated subsystem are elaborately studied and synthesized with the characteristic of viscoelastic element. Then the analysis of qualitative changes is conducted respectively under the varying excitation amplitude and frequency. Simulation results validate the efficiency and performance of the proposed system comparing with the conventional system.

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