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Because of the limited space and enormous forces in the human foot, researchers generally simplified the foot as a rigid body in the development of lower extremity exoskeletons and biped humanoid robots, which led to unsatisfying performance on flexibility and auto-stability. In this paper, we propose a novel parallel mechanism with seven degrees of freedom (DOF) to realize the main possible movements...
A wearable gait analysis system has been developed for ambulatory measurement of gait in long-term experiments and daily life applications. Based on the measurement results of the developed system in a dynamic validation experiment, we trained neural networks for the estimation of joint angle, joint force, and joint moment using the ground reaction forces (GRFs) and moments in the gait analysis. These...
Knee-joint kinematics analysis using an optimal sensor set and a reliable algorithm would be useful in the gait analysis. An original approach for ambulatory estimation of knee-joint angles in anatomical coordinate system is presented, which is composed of a physical-sensor-difference-based algorithm and virtual-sensor-difference-based algorithm. To test the approach, a wearable monitoring system...
An approach using virtual-sensor difference and physical-sensor difference based algorithm to visually confirm lower limb posture was proposed and a wearable sensor system was developed. To explicate the lower limb posture, flexion/extension (FE) and abduction/adduction (AA) hip joint angles and FE knee joint angles were estimated for orientations of the lower limb segments, and the knee and ankle...
An original approach for ambulatory measurement and analysis of lower limb 3D gait posture was presented, and a wearable sensor system was developed according to the approach. To explicate the lower limb posture, thigh orientation angles were calculated based on a virtual sensor at the hip joint and double analog inertial sensors (MAG3) on the thigh; Knee joint angle in sagittal plane was calculated...
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