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Inertial sensors designed for wearable devices in lower limbs need to be calibrated with complicated steps before measurements, and the attachments of body also influence the normal motion and bring measurement errors caused by relative movements. This paper proposes a method using ground reaction forces (GRFs) and moments measured by a pair of wearable sensor shoes to estimate the joint angles of...
In order to implement an unobstructed assessment of three-dimensional (3-D) gait, we developed a mobile force plate and 3-D motion analysis system (M3D) to measure triaxial ground reaction forces (GRF) and 3-D orientations of feet. Calibration and test experiments were conducted to characterize the sensor developed. To test the accuracy of the new measurement system, validation experiments by using...
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