基于模糊直接转矩控制的电动汽车稳定性研究  

Fuzzy direct torque control improves the stability of electric vehicle

作　　者：袁仪[1] 陈世元[1] 熊春雷[1] 刘耀阁[2] 

机构地区：[1]华南理工大学电力学院,广州510640 [2]中山大学理工学院,广州510275

出　　处：《黑龙江大学自然科学学报》2009年第4期555-560,共6页Journal of Natural Science of Heilongjiang University

基　　金：广东省自然科学基金资助项目(05006516)

摘　　要：电动汽车同传统汽车在控制方式具有较大的不同,为提高电动汽车行驶稳定性,提出根据最优滑转率结合模糊控制的方法,来提高汽车的稳定性;首先将路面状况以及汽车加速度作为模糊输入,用模糊推理的方法推断出期望转矩。再次利用模糊控制,将期望转矩输出同电机的内部参数作为输入量,设计了模糊算法,其有效提高了控制的精度和减少了输出的转矩脉动;采用基于12区间的直接转矩法控制电机,具有较小的输出转矩脉动,能快速的对电机输出转矩做出调节;最后用仿真的方法验证了这种方略可以提高汽车在多种情况下的稳定性。There are so many differences in control between the traditioanl vehicle and electric vehicle. For improving the stability of the EV, a method based on both the optimal slip raten control and fuzzy control had been proposed. Firstly,the condition of the road and the acceleration of the EV would be worked as the fuzzy input, after fuzzy caculation,the desired torque could be obtainned. Secondly,both the desired torque and the inner parameters of the motor would be considered as the fuzzy input, and a algorithm had been designed, which could effectively imporve the accuration and reduce the torque pulse. The motor was based on the twelve-sect-ion control methods, which could increase the response of the torque. At last,the model of motor and EV had been built in the Matlab,the results of the simulation proved that the EV based on this method could strongly improve its stability in many different road conditions.

关 键 词：电动汽车 稳定性 模糊控制 直接转矩控制 12区间法 仿真 

分 类 号：U469.7[机械工程—车辆工程]