CAJ | 학술논문

利用杠杆法对THS-III混合动力系统的纯电动加速过程进行了动态分析，通过仿真比较了不同驱动需求转矩、发动机静态阻力转矩和扭转减振器阻尼对发动机转速波动的影响。结果表明，纯电动模式下若仅对驱动电机实施转矩控制，可能会直接导致发动机被起动并产生转速波动，从而严重影响车辆行驶的平稳性。为此，设计了纯电动模式发动机转速补偿控制策略，并合理地选择控制器采样时间。经Matlab平台仿真验证，所采取的措施明显降低了发动机转速波动，在满足驾驶员转矩需求的情况下，改善了车辆行驶的平稳性。
이용강간법대THS-III혼합동력계통적순전동가속과정진행료동태분석，통과방진비교료불동구동수구전구、발동궤정태조력전구화뉴전감진기조니대발동궤전속파동적영향。결과표명，순전동모식하약부대구동전궤실시전구공제，가능회직접도치발동궤피기동병산생전속파동，종이엄중영향차량행사적평은성。위차，설계료순전동모식발동궤전속보상공제책략，병합리지선택공제기채양시간。경Matlab평태방진험증，소채취적조시명현강저료발동궤전속파동，재만족가사원전구수구적정황하，개선료차량행사적평은성。
A dynamic analysis is conducted on the acceleration process of Toyota’s THS-III hybrid system in its pure electric drive mode by using lever analogy technique. The effects of required drive torque, the static resist-ance torque of engine and the damping of torsional vibration damper on the fluctuations of engine speed are compara-tively analyzed by simulation. The results show that in pure electric drive mode, the sole torque control over driving motor may lead to engine being started unintentionally with speed fluctuation, severely affecting the ride comfort of vehicle. Accordingly, a compensation control strategy for engine speed in pure electric drive mode is devised with the sampling time of controller properly chosen. The final simulation with Matlab verifies that the measures taken ap-parently reduce the fluctuation of engine speed and improve the ride comfort of vehicle while meeting the torque re-quirement of driver.