Cyclic gait planning and control of a five-link biped robot with four actuators during single support and double support phases

Springer Science and Business Media LLC - Tập 33 - Trang 389-411 - 2013
Reza Dehghani1, Abbas Fattah2, Esmaeil Abedi3
1Department of Mechanical Engineering, Graduate University of Advanced Technology, Kerman, Iran
2Department of Mechanical Engineering, Isfahan University of Technology, Isfahan, Iran
3Department of Mechanical Engineering, Majlesi Branch, Islamic Azad University, Isfahan, Iran

Tóm tắt

This paper focuses on cyclic gait planning and motion control of a five-link biped robot with four actuators. The biped walking consists of two alternative phases of motion: single support phase (SSP) and double support phase (DSP). The biped robot is under-actuated and over-actuated during the SSP and DSP, respectively. Because of the underactuation problem in the SSP, time trajectories cannot be obtained directly and control motion is difficult. Hence, a new algorithm is proposed for cyclic gait planning during the successive single and double support phases. Two control laws are proposed for the control motion during the SSP and the DSP. In the SSP, the control law is developed using a predictive control algorithm and a time optimal control is proposed for the DSP. Attraction region and convergence to the cyclic gait are studied. The results demonstrate the effectiveness of the proposed method in the biped motion.

Tài liệu tham khảo

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