The Design Of A Powered Ankle Prosthesis With Electrohydrostatic Actuation

Tian Yu, Andrew Plummer, Pejman Iravani, Jawaad Bhatti

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

Abstract

This paper describes the design, simulation and testing of a
piezoelectric spool valve. An actuator has been connected to
the valve and tested under closed loop control. A mathematical
model of the valve was produced and a prototype of the valve
was tested. The mathematical model is validated against the
experimental data. Step and frequency responses for both the
valve and actuator are presented. It was found that
displacement of the hydraulic fluid by the ring bender had an
impact on the valve performance. To reduce the effect of the
piezoelectric hysteresis, closed loop spool position control was
evaluated. A noticeable difference can be observed between
open loop and closed loop performance
Original languageEnglish
Title of host publicationProceedings of the ASME/BATH 2015 Symposium on Fluid Power and Motion Control
PublisherASME
Publication statusPublished - Oct 2015
EventASME/BATH 2015 Symposium on Fluid Power and Motion Control, FPMC2015 - Chicago, UK United Kingdom
Duration: 12 Oct 201514 Oct 2015

Conference

ConferenceASME/BATH 2015 Symposium on Fluid Power and Motion Control, FPMC2015
CountryUK United Kingdom
CityChicago
Period12/10/1514/10/15

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Cite this

Yu, T., Plummer, A., Iravani, P., & Bhatti, J. (2015). The Design Of A Powered Ankle Prosthesis With Electrohydrostatic Actuation. In Proceedings of the ASME/BATH 2015 Symposium on Fluid Power and Motion Control ASME.