CAJ | 학술논문

汽车的转向特性是研究及评价现代汽车安全性能最重要的指标之一。当汽车处于高速、紧急转向的状态时，车辆容易失控，因此有必要对汽车的转向特性进行分析。根据给定的技术参数，建立汽车线性二自由度汽车动力学模型，利用MATLAB/Simulink软件建立汽车控制仿真模型，比较汽车在不同前轮角阶跃输入和不同车速下的车身姿态，研究汽车的转向特性，进而对汽车操纵稳定性进行评价。结果表明，汽车的行驶速度、前轮转角以及轮胎的侧偏刚度对汽车操纵稳定性有很大影响。当汽车以较低速度，较小的前轮转角行驶，并且选用较大侧偏刚度的轮胎是相对安全的。
기차적전향특성시연구급평개현대기차안전성능최중요적지표지일。당기차처우고속、긴급전향적상태시，차량용역실공，인차유필요대기차적전향특성진행분석。근거급정적기술삼수，건립기차선성이자유도기차동역학모형，이용MATLAB/Simulink연건건립기차공제방진모형，비교기차재불동전륜각계약수입화불동차속하적차신자태，연구기차적전향특성，진이대기차조종은정성진행평개。결과표명，기차적행사속도、전륜전각이급륜태적측편강도대기차조종은정성유흔대영향。당기차이교저속도，교소적전륜전각행사，병차선용교대측편강도적륜태시상대안전적。
Vehicle steering characteristics is one of the most important indicators of studying and evaluat-ing the modern automotive safety performance. When the car is in a state of high speed or emergency steer-ing,the vehicle is easily out of control. So the study of vehicle steering characteristics analysis is necessary for the research on the vehicle's steering stability. The linear 2-dof vehicle model is established in this arti-cle,based on the given parameters. A vehicle simulation model is established using MATLAB/Simulink, and postures of the vehicle in different front wheel angle step input and different speed are compared. The vehicle steering characteristic is studied,to evaluate the vehicle steering stability. Results show that the ve-hicle's speed and front wheel angle as well as the tire cornering stiffness have a great influence on the vehi-cle steering stability. When a lower speed,a smaller angle,and the larger tire cornering stiffness of tire are chosen for the vehicle,it is relatively safe.