Abstract
This paper proposes a biological information-based control algorithm for a running assistive device to synchronize a fluctuation of a running motion. The running motion is not uniform during running. A period of the running is fluctuating all time since a runner adjusts the stride for his body balance against external disturbances. The assistive device for the runner has to infer a moment to start the support to achieve effective assistance. This paper introduces the algorithm to infer a state of the running based on muscle activities of the lower limb. The performance of the algorithm is investigated through some experiments.
