Ride Performance Evaluation of a Heavy Truck Semi-active Cabin Air Suspension System

대형 트럭 반능동형 캐빈 공기 현가시스템의 승차감 성능 평가 연구

  • Lee, Ji-Sun (School of Mechanical Engineering, Kunsan National University) ;
  • Choi, Gyoo-Jae (School of Mechanical Engineering, Kunsan National University) ;
  • Lee, Kwang-Heon (School of Mechanical Engineering, Kunsan National University)
  • Published : 2008.09.01

Abstract

Semi-active cabin air suspension system improves driver's comfort by controlling the damping characteristics in accordance with driving situation. For the driver's comfort evaluation, test procedure has the two methodologies which are filed test and lab test. A field test method has a drawback. It requires a lot of time and money on repetitive test, due to the sensitivity of field test. On the other hand, the test with six axes simulation table at laboratory can obtain the repeatability of test, better than the field test method. In this paper, the procedures of ride performance test and control logic tuning with the table are presented. Drive files of the table can be represented with the almost same input condition as field test data. According to the result from the comparative test using six axes simulation table between passive and semi-active system by making ECU logic tuning, the RMS acceleration of semi-active cabin air suspension system was reduced by 29.6% compared with passive system.

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