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Proceedings Paper

Pressure tracking control of vehicle ABS using piezo valve modulator
Author(s): Juncheol Jeon; Seung-Bok Choi
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Paper Abstract

This paper presents a wheel slip control for the ABS(anti-lock brake system) of a passenger vehicle using a controllable piezo valve modulator. The ABS is designed to optimize for braking effectiveness and good steerability. As a first step, the principal design parameters of the piezo valve and pressure modulator are appropriately determined by considering the braking pressure variation during the ABS operation. The proposed piezo valve consists of a flapper, pneumatic circuit and a piezostack actuator. In order to get wide control range of the pressure, the pressure modulator is desired. The modulator consists of a dual-type cylinder filled with different substances (fluid and gas) and a piston rod moving vertical axis to transmit the force. Subsequently, a quarter car wheel slip model is formulated and integrated with the governing equation of the piezo valve modulator. A sliding mode controller to achieve the desired slip rate is then designed and implemented. Braking control performances such as brake pressure and slip rate are evaluated via computer simulations.

Paper Details

Date Published: 27 April 2011
PDF: 10 pages
Proc. SPIE 7977, Active and Passive Smart Structures and Integrated Systems 2011, 79771V (27 April 2011); doi: 10.1117/12.880378
Show Author Affiliations
Juncheol Jeon, Inha Univ. (Korea, Republic of)
Seung-Bok Choi, Inha Univ. (Korea, Republic of)

Published in SPIE Proceedings Vol. 7977:
Active and Passive Smart Structures and Integrated Systems 2011
Mehrdad N. Ghasemi-Nejhad, Editor(s)

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