Corrections to "A Piecewise Monotonic Smooth Phase Variable for Speed-Adaption Control of Powered Knee-Ankle Prostheses"
Teng Ma, Yuxuan Wang, Xinxing Chen, Chuheng Chen, Zhimin Hou, Haoyong Yu, Chenglong Fu
Abstract
Firstly, in the letter [1], there is a missing citation in Section II, part B, the first sentence. It should be “In a manner similar to [2], [3], speed estimation was achieved by a double-pendulum model.” In our previous version [1], speed estimation was based on the principles in [3]. We also referred to the interpretation and expression form of 6 and 7 in [2], but did not cite this reference in [1]. It should be noted that the 9 in [1] is not the same as 5 in [2]. Because our prosthesis can measure the kinematic information of the hip, knee, and ankle, we considered using the kinematics of the three joints to estimate the velocity, instead of only using the angle hip and knee as in [2], therefore we additionally introduced the ankle angle in 9 of [1]. This led to changes in the lower extremity model used in our calculations and changes in the formula for calculating the stride length.
BibTeX
@inproceedings{ral2022_correctionstoapi,
title = {Corrections to "A Piecewise Monotonic Smooth Phase Variable for Speed-Adaption Control of Powered Knee-Ankle Prostheses"},
author = {Teng Ma and Yuxuan Wang and Xinxing Chen and Chuheng Chen and Zhimin Hou and Haoyong Yu and Chenglong Fu},
booktitle = {RA-L 2022},
year = {2022}
}