Obtaining Natural Sit-to-Stand Motion with a Biomimetic Controller for Powered Knee Prostheses

Joint Authors

Wu, Molei
Haque, Md Rejwanul
Shen, Xiangrong

Source

Journal of Healthcare Engineering

Issue

Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-6, 6 p.

Publisher

Hindawi Publishing Corporation

Publication Date

2017-09-18

Country of Publication

Egypt

No. of Pages

6

Main Subjects

Public Health
Medicine

Abstract EN

Standing up from a seated position is a common activity in people’s daily life.

However, for transfemoral (i.e., above-knee) amputees fitted with traditional passive prostheses, the sit-to-stand (STS) transition is highly challenging, due to the inability of the prosthetic joints in generating torque and power output.

In this paper, the authors present a new STS control approach for powered lower limb prostheses, which is able to regulate the power delivery of the prosthetic knee joint to obtain natural STS motion similar to that displayed by healthy subjects.

Mimicking the dynamic behavior of the knee in the STS, a unified control structure provides the desired control actions by combining an impedance function with a time-based ramp-up function.

The former provides the gradual energy release behavior desired in the rising phase, while the latter provides the gradual energy injection behavior desired in the loading phase.

This simple and intuitive control structure automates the transition between the two phases, eliminating the need for explicit phase transition and facilitating the implementation in powered prostheses.

Human testing results demonstrated that this new control approach is able to generate a natural standing-up motion, which is well coordinated with the user’s healthy-side motion in the STS process.

American Psychological Association (APA)

Wu, Molei& Haque, Md Rejwanul& Shen, Xiangrong. 2017. Obtaining Natural Sit-to-Stand Motion with a Biomimetic Controller for Powered Knee Prostheses. Journal of Healthcare Engineering،Vol. 2017, no. 2017, pp.1-6.
https://search.emarefa.net/detail/BIM-1180932

Modern Language Association (MLA)

Wu, Molei…[et al.]. Obtaining Natural Sit-to-Stand Motion with a Biomimetic Controller for Powered Knee Prostheses. Journal of Healthcare Engineering No. 2017 (2017), pp.1-6.
https://search.emarefa.net/detail/BIM-1180932

American Medical Association (AMA)

Wu, Molei& Haque, Md Rejwanul& Shen, Xiangrong. Obtaining Natural Sit-to-Stand Motion with a Biomimetic Controller for Powered Knee Prostheses. Journal of Healthcare Engineering. 2017. Vol. 2017, no. 2017, pp.1-6.
https://search.emarefa.net/detail/BIM-1180932

Data Type

Journal Articles

Language

English

Notes

Includes bibliographical references

Record ID

BIM-1180932