摘要
通过用相对目标转速表示驱动轮的实际转速,把转向问题转换为直行问题的直行化转换,并引入了转速修正系数,以相对目标滑转率作为控制参数,在相对目标滑转率δ>0.5%时,采用调压式电子差速模式,在相对目标滑转率δ≤0.5%时,依据电机的特性及双电机独立驱动的特点,采用自适应调节的电子差速模式,实现电子差速功能,保证了双前轮驱动电动汽车行驶的稳定性。
In this paper, the technology of electronic differential（ED） was used to realize the differential function for the electric vehicle of double-motor direct-drive mode. A target speed was applied to replace the actual speed of driving wheel, which realized the straight line transition, transforming the steering problem into a straight-line one. A speed correction coefficient was introduced, and relative-target slip rate was used as control parameters. Closed loop feedback control system was adopted to realize the function of ED and adaptive adjustment. All of the factors above ensure the driving stability of a front-wheel-drive EV. When the rate is greater than 0.5%, the adjusted differential ED is used .While the rate is less than or equal to 0.5%, according the motors characteristics and the features of independent drive by dual motors, adaptive adjustment mode should be adopted to realize the function of ED.
出处
《电源技术》
CAS
CSCD
北大核心
2013年第8期1457-1459,1463,共4页
Chinese Journal of Power Sources
基金
山东省科技攻关计划资助项目(2010GGX10725)
关键词
相对目标滑转率
直行化转换
电子差速
自适应调节
转速修正系数
relative target slip rate
straight line transition
electronic differential
adaptive regulation
speed correction coefficient
