Select
Research on Power Transfer Characteristics of Transfer Case with Temperature Prediction Compensation Control
Wang Yuming, Wang Qidong, Li Hongliang, Chen Liqing, Gu Tianyi, Sun Jingjing
2020, 42 (5 ):
644-650.
doi: 10.19562/j.chinasae.qcgc.2020.05.012
Transfer case is an essential component of the intelligent four-wheel drive vehicle, and its performance is affected by various factors during the process of torque transmission, especially by temperature change. Hence, it is crucial to evaluate the effect of temperature change on the torque output of transfer case accurately. In order to solve this problem, firstly, by predicting the temperature change of the friction plate, coil and lubricating oil during the transfer case joining process, the transfer case temperature control model is built. On this basis, the transfer case test platform is constructed. By the temperature compensation cooperative control of the test data obtained from the test platform and the feed forward controller, a temperature feedback compensation control system with time-delay of transfer case is built to analyze the dynamic transfer characteristics of transfer case under the influence of temperature. The results show that once the friction plate contacts the steel disk for many times, the temperature of the friction plate increases significantly, which has a significant impact on the torque transmission. The control current is linear related to the torque output of the transfer case basically. Considering the feedback compensation control, the output time of the transfer case power decreases by 0.05 s and the control error is nearly zero. This research can provide a theoretical basis for the accurate control of the transfer case
References |
Related Articles |
Metrics