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Received:June 30, 2005Revised:October 12, 2006 |
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Clock-turning gait synthesis for humanoid robots |
Zhe TANG, Zengqi SUN, Hongbo LIU, Meng Joo ER |
(Intelligent Systems Centre, Nanyang
Technological University, 637553, Singapore) |
Abstract: |
Turning gait is a basic motion for humanoid robots. This paper presents a method for humanoid
turning, i.e. clock-turning. The objective of clock-turning is to change robot direction at a
stationary spot. The clock-turning planning consists of four steps: ankle trajectory
generation, hip trajectory generation, knee trajectory generation, and inverse kinematics
calculation. Our proposed method is based on a typical humanoid structure with 12 DOFs
(degrees of freedom). The final output of clock-turning planning is 12 reference trajectories, which are
used to control a humanoid robot with 12 DOFs. ZMP (zero moment point) is used as stability
criterion for the planning. Simulation experiments are conducted to verify the effectiveness of
our proposed clock-turning method. |
Key words: Humanoid robots Turning gait ZMP Clock-turning |