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Updated: May 26, 2026

An Inertial Measurement Unit Based Method to Estimate Hip and Knee Joint Kinematics in Team Sport Athletes on the Field
Published on: May 26, 2020
State derivation of a 12-axis gyroscope-free inertial measurement unit
1Department of Mechanical Engineering, National Taiwan University, No.1 Roosevelt Rd. Sec.4, ME Eng. Bldg. Room 503-3, Taipei, Taiwan. b93502114@ntu.edu.tw
Abstract:
The derivation of linear acceleration, angular acceleration, and angular velocity states from a 12-axis gyroscope-free inertial measurement unit that utilizes four 3-axis accelerometer measurements at four distinct locations is reported. Particularly, a new algorithm which derives the angular velocity from its quadratic form and derivative form based on the context-based interacting multiple model is demonstrated. The performance of the system was evaluated under arbitrary 3-dimensional motion.
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