期刊
INTERNATIONAL JOURNAL OF ROBOTICS RESEARCH
卷 23, 期 2, 页码 141-153出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/0278364904041323
关键词
locomotion; adaptation; biomimetic robots
类别
We demnstrate an adaptation strategy,for adjusting the stride period in a hexapedal running robot. The robot is inspired by discoveries about the self-stabilizing properties of insects and uses a sprawled posture, a bouncing alternating-tripod gait, and passive compliance and damping in the limbs to achieve fast (over four body-lengths per second). stable locomotion. The robot is controlled by an open-loop motor pattern that activates the legs at fixed intervals. For maximum speed and efficiency the stride period of the pattern should be adjusted to match changes in terrain (e.g., slopes) or loading conditions (e.g.. carrying an object). An ideal adaptation strategy will complement philosophy behind the robot and take advantage of self-stabilizing role of the mechanical system. In this paper we describe an adaptation scheme based on measurements of ground contact tuning obtained from binary sensors on the robot's feet. We discuss the motivation for the approach, putting it in the context of previous research on the dynamic properties of running machines and bouncing multi-legged animals, and we show the results of the experiments.
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