Passivity based backstepping control for trajectory tracking using a hydraulic transformer

Sangyoon Lee, Perry Y. Li

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

10 Scopus citations

Abstract

Throttling loss is a major contributor to the low system efficiency in hydraulic systems. Hydraulic transformers can potentially be an energy efficient, throttle-less control approach for multi-actuators systems powered by a common pressure rail (CPR). The transformer transforms the input CPR pressure to the desired pressure of the actuator instead of throttling it. Regenerative energy can also be captured. For transformers to be useful, they must also have good control performance. This paper presents a a passivity based trajectory tracking controller for a hydraulic actuator driven by a transformer consisting of two mechanically coupled variable displacement pump/motors. In addition to controlling the motion of the actuator, the transformer speed can also be regulated at the most efficient operating speed. The nonlinear controller is designed using a Lyapunov function that is based upon a recently discovered natural energy storage function for hydraulic actuators. Experimental results validate the efficacy of this controller.

Original languageEnglish (US)
Title of host publicationASME/BATH 2015 Symposium on Fluid Power and Motion Control, FPMC 2015
PublisherAmerican Society of Mechanical Engineers
ISBN (Electronic)9780791857236
DOIs
StatePublished - Jan 1 2015
EventASME/BATH 2015 Symposium on Fluid Power and Motion Control, FPMC 2015 - Chicago, United States
Duration: Oct 12 2015Oct 14 2015

Publication series

NameASME/BATH 2015 Symposium on Fluid Power and Motion Control, FPMC 2015

Other

OtherASME/BATH 2015 Symposium on Fluid Power and Motion Control, FPMC 2015
CountryUnited States
CityChicago
Period10/12/1510/14/15

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    Lee, S., & Li, P. Y. (2015). Passivity based backstepping control for trajectory tracking using a hydraulic transformer. In ASME/BATH 2015 Symposium on Fluid Power and Motion Control, FPMC 2015 (ASME/BATH 2015 Symposium on Fluid Power and Motion Control, FPMC 2015). American Society of Mechanical Engineers. https://doi.org/10.1115/FPMC2015-9618