A Kinematic Human-Walking Model for the Normal-Gait-Speed Estimation Using Tri-Axial Acceleration Signals at Waist Location

作者：Hu Jwu Sheng^*; Sun Kuan Chun; Cheng Chi Yuan

来源：IEEE Transactions on Biomedical Engineering, 2013, 60(8): 2271-2279.

DOI：10.1109/TBME.2013.2252345

• Gait
• human mechatronics
• inertia sensor
• kinematic walking model
• walking speed
• wearable sensor

This study aims at estimating the human walking speed using wearable accelerometers by proposing a novel virtual inverted pendulum model. This model not only keeps the important characteristics of both the biped rolling-foot and the inverted pendulum model, but also makes the speed estimation feasible using human body acceleration. Rather than using statistical methods, the proposed kinematic walking model enables calibration of the parameters during walking using only one tri-axial accelerometer on the waist that collects the user%26apos;s body acceleration. In addition, this model also includes the effect of rotation of the waist within a walking cycle, which improves the estimation accuracy. Experimental results for a group of humans show a 0.58% absolute error mean and 0.72% error deviation, which is far better than the results of other known studies with accelerometers mounted on the upper body.

• 出版日期2013-8