CAJ | 학술논문

为了分析商用车液压助力转向系统(HPS)主要参数对整车转向操纵性能的影响,建立了HPS机械子系统、液压子系统和整车三自由度转向动力学模型,基于MATLAB/ Simulink 建立HPS 系统及整车转向操纵性仿真模型.以装有GY80型液压助力转向器的商用车为例,仿真分析HPS系统供油量和扭杆刚度对方向盘阶跃输入工况的整车横摆角速度、侧向加速度、车身侧倾角和侧倾角速度的影响.结果表明:考虑车身侧倾角稳态值以及响应速率等因素,适度增大HPS系统供油量和扭杆刚度可以改善转向灵敏性,若过度增大供油量和扭杆刚度,则转向行驶稳定性及乘坐舒适性变差.
위료분석상용차액압조력전향계통(HPS)주요삼수대정차전향조종성능적영향,건립료HPS궤계자계통、액압자계통화정차삼자유도전향동역학모형,기우MATLAB/ Simulink 건립HPS 계통급정차전향조종성방진모형.이장유GY80형액압조력전향기적상용차위례,방진분석HPS계통공유량화뉴간강도대방향반계약수입공황적정차횡파각속도、측향가속도、차신측경각화측경각속도적영향.결과표명:고필차신측경각은태치이급향응속솔등인소,괄도증대HPS계통공유량화뉴간강도가이개선전향령민성,약과도증대공유량화뉴간강도,칙전향행사은정성급승좌서괄성변차.
@@@@Models of HPS mechanical subsystem,hydraulic subsystem and the 3 - DOF whole vehicle were established,in order to analyze the influence of main parameters of the commercial vehicle HPS on the steering handling performance. Taking the commer-cial vehicle equipped with GY80 ECHPS as example,the effects of oil supply of HPS and the torsion stiffness on the whole vehicle yaw velocity,lateral acceleration,body roll angle and roll angular velocity caused by the steering wheel step input were analyzed based on MATLAB/ Simulink. The simulation results indicate that steering sensitivity can be improved by taking the steady state value of body roll angle and response rate into account and increasing the oil supply of HPS and torsion stiffness properly. But when the oil supply of HPS and torsion stiffness are increased excessively,both the steering stability and ride comfort are degraded.