Legged robots that balance
Locomotion Control of a Biped Robot Using Nonlinear Oscillators
Autonomous Robots
Fast Biped Walking with a Sensor-driven Neuronal Controller and Real-time Online Learning
International Journal of Robotics Research
Controlling the Walking Period of a Pneumatic Muscle Walker
International Journal of Robotics Research
Editorial: Special issue on robotics and neuroscience
Neural Networks
Hi-index | 0.00 |
There are a huge number of studies that measure kinematics, dynamics, the oxygen uptake and so on in human walking on the treadmill. Especially in walking on the splitbelt treadmill where the speed of the right and left belt is different, remarkable differences in kinematics are seen between normal and cerebellar disease subjects. In order to construct the gait adaptation model of such human splitbelt treadmill walking, we proposed a simple control model and made a newly developed 2D biped robot walk on the splitbelt treadmill. We combined the conventional limit-cycle based control consisting of joint PD-control, cyclic motion trajectory planning and a stepping reflex with a newly proposed adjustment of P-gain at the hip joint of the stance leg. We showed that the data of robot normal subject model and cerebellum disease subject model experiments had high similarities with the data of normal subjects and cerebellum disease subjects experiments carried out by Reisman et al. 2005 and Morton and Bastian 2006 in ratios and patterns. We also showed that P-gain at the hip joint of the stance leg was the control parameter of adaptation for symmetric gaits in splitbelt walking and P-gain adjustment corresponded to muscle stiffness adjustment by the cerebellum. Consequently, we successfully proposed the gait adaptation model in human splitbelt treadmill walking and confirmed the validity of our hypotheses and the proposed model using the biped robot.