CAJ | 학술논문

利用交流测功机模拟车轮受到的路面负载与惯性负载,以实现在室内台架上实现对车辆动力总成系统的动态模拟。进行了车辆纵向动力学模型和台架系统动力学模型的构建,计算出整车等效到主动车轮的转动惯量,利用转速跟踪方法动态模拟了实车工况；采用基于迭代反馈整定理论的二自由度PID 控制算法来控制油门踏板,使节气门快速准确地达到目标位置。3次迭代后,油门踏板控制系统超调量降低至14·7％,稳定时间缩短为0·5 s,提高了动态模拟的控制精度和响应速度。
이용교류측공궤모의차륜수도적로면부재여관성부재,이실현재실내태가상실현대차량동력총성계통적동태모의。진행료차량종향동역학모형화태가계통동역학모형적구건,계산출정차등효도주동차륜적전동관량,이용전속근종방법동태모의료실차공황；채용기우질대반궤정정이론적이자유도PID 공제산법래공제유문답판,사절기문쾌속준학지체도목표위치。3차질대후,유문답판공제계통초조량강저지14·7％,은정시간축단위0·5 s,제고료동태모의적공제정도화향응속도。
To test and emulate the vehicle powertrain performance,a test bed with dynamic emula-tion unit was constructed.The loads of the vehicle wheel subjected the actual road and inertia were emulated by two AC dynamometers.The vehicle longitudinal dynamics model and the mathematical model of the test bed were established.The whole vehicle was equaled to wheel inertia based on actual pavement condition and test platform structure.Transfer function of the test bench was identified and a strategy of speed track was proposed.Two-degree-of-freedom(2-DOF)proportional-integral-deriva-tive(PID)controller for an engine throttle system was designed and the PID control gains were opti-mized using IFT.After the third iteration,the percent overshoot of the accelerator pedal control sys-tem is reduced to 14.7%,and settling time is reduced to 0·5 s.The results show that the control accu-racy and response speed are improved.