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능동 현가 장치가 차량의 핸들링에 미치는 영향에 관한 연구
이증섭(J. S. Lee),강준원(J W. Kang),백승주(S. J. Baek),박성문(S. M. Park),오재윤(C. Y. Oh) 한국자동차공학회 1996 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1996 No.11_1
This paper develops a 7 DOF vehicle model to study the effects of the active suspension on ride. The model is used to derive a control law for the active suspension using a full state linear optimal control technique. A wheelbase preview type active suspension is also considered in the control law derivation. The time delay between wheelbases is approximated using Pade approximation technique. The ride model is extended to a 14 DOF handling model to include lateral, longitudinal, yaw and four wheel spin motions. A control law which is derived by considering only ride related parameters is used to study the effects of the active suspension on a vehicle handling. J-tum maneuver simulation results show that the active suspension has a slower response in lateral acceleration and yaw rate, a bigger steady state lateral acceleration and an oversteer tendency. Lane changing maneuver simulation results show that the active suspension has a little bigger lateral acceleration but a much smaller roll angle and roll motion. Braking maneuver simulation results show that the active suspension has a much smaller pitch angle and pitch motion.<br/>