CAJ | 학술논문

针对电动汽车滑行阻力系数的测量问题，通过道路试验提出了利用曲线拟合计算滚动阻力系数和空气阻力系数的方法。通过对空挡滑行试验数据的处理得到加速度与速度的函数关系曲线，并以最小二乘法曲线拟合的原理将其进行二次拟合；通过二次曲线方程计算出电动汽车的滚动阻力系数和空气阻力系数，并对两阻力系数进行统计和分析；通过对试验数据的分析确定某电动汽车最高车速、最大加速度和0~100 km/h加速时间，并利用计算结果对其动力性能进行测试，验证了两阻力系数测定方法的有效性。
침대전동기차활행조력계수적측량문제，통과도로시험제출료이용곡선의합계산곤동조력계수화공기조력계수적방법。통과대공당활행시험수거적처리득도가속도여속도적함수관계곡선，병이최소이승법곡선의합적원리장기진행이차의합；통과이차곡선방정계산출전동기차적곤동조력계수화공기조력계수，병대량조력계수진행통계화분석；통과대시험수거적분석학정모전동기차최고차속、최대가속도화0~100 km/h가속시간，병이용계산결과대기동력성능진행측시，험증료량조력계수측정방법적유효성。
A curve fitting method to calculate rolling resistance coefficient and air resistance coefficient for the electric vehicles is proposed via road test. A function relation curve of acceleration and velocity are obtained by the data of coasting in neutral and the curve is fitted through the principle of least squares curve fitting. The rolling resistance coefficient and air resistance coefficient of electric vehicles are calculated and analyzed by the quadratic curve equation. The maximum speed, maximum acceleration and acceleration time of (0~100) km/h are determined by analyzing road test data. The results of calculation are used to test its dynamic performance, validity of the measurement method of the rolling resistance coefficient and air resistance coefficient is validated.