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Fig. 3 | BioMedical Engineering OnLine

Fig. 3

From: A powered prosthetic ankle joint for walking and running

Fig. 3

Step detection: human reference shank velocity for 2.6 m/s running used for stride detection (mean of 21 able-bodied subjects). Zero crossing from negative to positive is used to determine the beginning of the next stride. Step detection starts at −150 °/s to prevent from errors that could occur by zero crossings at lower speeds during stance

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