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Optimization Technique of Passenger Car Suspension System Considering J-Turn Handling Performances

J-선회 조종성능을 고려한 승용차 현가장치의 최적화 기법

  • 이상범 (볼보코리아) ;
  • 이춘승 (국민대학교 자동차공학전문대학원) ;
  • 임홍재 (국민대학교 자동차공학전문대학원) ;
  • 김민수 (국민대학교 자동차공학전문대학원)
  • Published : 2004.03.01

Abstract

The purpose of this paper is to develop a systematic design method for the suspension system hard points and compliance elements, which have great influence on the handling stability of a vehicle. In this paper, a method to optimize J-turn responses is presented based on the principles of design of experiments, multi-body dynamic analysis and optimum design technique. The design variables associated with the J-turn maneuver are selected through the experimental design sensitivity analysis using the perturbation method. An objective function is defined as an approximate function for the J-turn characteristics using the TSA(Taylor series approximation). The values of the design variables, which make the optimized J-turn characteristics, are obtained using the conjugate gradient method. The result of the J-turn simulation shows that the optimized vehicle has more improved handling stability than the optimized vehicle.

Keywords

Approximate Optimal Design;Design of Experiments;J-turn Simulation;Vehicle Suspension System

References

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