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Sprung Mass Motion Emulation in a Braking Test Rig

[+] Author Affiliations
Chunjian Wang, Qian Wang, Jeffery Anderson, Beshah Ayalew

Clemson University, Greenville, SC

Paper No. DETC2015-47691, pp. V003T01A017; 7 pages
doi:10.1115/DETC2015-47691
From:
  • ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 3: 17th International Conference on Advanced Vehicle Technologies; 12th International Conference on Design Education; 8th Frontiers in Biomedical Devices
  • Boston, Massachusetts, USA, August 2–5, 2015
  • Conference Sponsors: Design Engineering Division, Computers and Information in Engineering Division
  • ISBN: 978-0-7918-5710-6
  • Copyright © 2015 by ASME

abstract

This paper describes a quarter-car braking test rig that includes a hardware-in-the-loop (HIL) means for emulating broader vehicle dynamic effects. The test rig utilizes actual vehicle components such as the suspension-tire assembly and braking system to accurately represent a vehicle during a braking event and a chassis dynamometer’s drum is used to simulate the longitudinal vehicle dynamics. The key problem addressed in this paper is the emulation of sprung mass motion with a commercial electromagnetic linear actuator. By accurately representing the motion, detailed effects such as load transfer that happens in a real braking process can be studied for its effect on the braking performance. The stability of the system with sprung mass emulation under different actuator control modes is analyzed. The successful and stable control scheme found is a cascaded control with a velocity tracking strategy. The workings of the test are illustrated via representative test results that include a locked-wheel braking event and a stop with an anti-lock braking system (ABS).

Copyright © 2015 by ASME
Topics: Braking

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