Control design of an electro-hydraulic actuator for variable-geometry suspension systems

Balazs Nemeth, Daniel Fenyes, P. Gáspár, Jozsef Bokor

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

Abstract

This paper proposes the modeling and control design of an electro-hydraulic actuator for the variable-geometry suspension system. The purpose of this novel suspension type is to guarantee trajectory tracking through the variation of the camber angle. The motion of the wheel is realized by the electro-hydraulic actuator, whose elements are the cylinder and the electric valve. Thus, the trajectory tracking of the vehicle requires the positioning of the cylinder. First, the modeling of the system is presented using hydraulic and mechanical equations. Since the dynamics of the actuator contains several nonlinearities, a control-oriented linear model is formed. Second, the positioning problem of the cylinder is solved by using the Control Lyapunov Function technique, which is able to handle the discrete control input. Moreover, the control strategy requires pressure signals in the cylinder, which are estimated using a robust H observer. The efficiency of the proposed algorithm is demonstrated through simulation examples.

Original languageEnglish
Title of host publication2017 25th Mediterranean Conference on Control and Automation, MED 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages180-185
Number of pages6
ISBN (Electronic)9781509045334
DOIs
Publication statusPublished - Jul 18 2017
Event25th Mediterranean Conference on Control and Automation, MED 2017 - Valletta, Malta
Duration: Jul 3 2017Jul 6 2017

Other

Other25th Mediterranean Conference on Control and Automation, MED 2017
CountryMalta
CityValletta
Period7/3/177/6/17

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ASJC Scopus subject areas

  • Control and Optimization
  • Modelling and Simulation

Cite this

Nemeth, B., Fenyes, D., Gáspár, P., & Bokor, J. (2017). Control design of an electro-hydraulic actuator for variable-geometry suspension systems. In 2017 25th Mediterranean Conference on Control and Automation, MED 2017 (pp. 180-185). [7984115] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/MED.2017.7984115