CAJ | 학술논문

汽车动力学模型是研制汽车驾驶仿真器的前提,建立发动机仿真模型是建立汽车动力学仿真模型的关键.根据某发动机已知数据,采用最小二乘法、松弛迭代法等计算方法实现多项式拟合发动机的稳态转矩与转速之间的关系曲线,得到了能够描述该发动机的外特性关系式.运用所建仿真模型求取了一定条件下的有关数据,并与相应实测所得数据进行了对比.对比结果表明,仿真模型能够很好满足数据精度要求.
기차동역학모형시연제기차가사방진기적전제,건립발동궤방진모형시건립기차동역학방진모형적관건.근거모발동궤이지수거,채용최소이승법、송이질대법등계산방법실현다항식의합발동궤적은태전구여전속지간적관계곡선,득도료능구묘술해발동궤적외특성관계식.운용소건방진모형구취료일정조건하적유관수거,병여상응실측소득수거진행료대비.대비결과표명,방진모형능구흔호만족수거정도요구.
Vehicle dynamics model is the premise of researching and developing driving simulator and establishing engine simulation model is the key of establishing the dynamic simulation model.Based on the known engine data,some methods such as least square method,SOR method and others were used to realize the polynomial curve fitting between steady-state torque of vehicle engines and rev and obtain relational expression which can describe the external characteristic of the engine.Based on the stimulated model,some data on certain condition were solved which were compared with corresponding measured data.The comparative results show that stimulated mode can well meet the accuracy requirement.