Journal of Mechanical Science and Technology

The Korean Society of Mechanical Engineers (대한기계학회)
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Modeling and Control of an Electronic-Vacuum Booster for Vehicle Cruise Control

  • Lee, Chankyu (Department of Automotive Engineering, Hanyang University) ;
  • Kyongsu Yi (School of Mechanical Engineering, Hanyang University)
  • Published : 2002.10.01
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Abstract

A mathematical model and control laws for an Electronic-Vacuum Booster (EVB) for application to vehicle cruise control will be presented. Also this paper includes performance test result of EVB and vehicle cruise control experiments. The pressure difference between the vacuum chamber and the apply chamber is controlled by a PWM-solenoid-valve. Since the pressure at the vacuum chamber is identical to that of the engine intake manifold, the output of the electronic-vacuum booster Is sensitive to engine speed. The performance characteristics of the electronic-vacuum booster have been investigated via computer simulations and vehicle tests. The mathematical model of the electronic-vacuum booster developed in this study and a two-state dynamic engine model have been used in the simulations. It has been shown by simulations and vehicle tests that the EVB-cruise control system can provide a vehicle with good distance control performance in both high speed and low speed stop and go driving situations.

Keywords

References

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