摘要：针对纯电动汽车运行环境复杂多变、难以预测，驾驶员驾驶意图随意性强的特点，本文采用车速电流双闭环调速系统控制纯电动汽车的车速，其中采用模糊自适应整定PID控制策略对车速进行控制，采用Bang-Bang控制策略对电流进行控制。在Matlab/Simulink环境下建立了纯电动汽车车速电流双闭环调速系统仿真模型，基于该模型对电动汽车匀速行驶运行工况和爬坡行驶运行工况进行仿真研究，比较PID控制策略和模糊自适应整定PID控制策略系统的动态特性。仿真结果表明：采用基于模糊PID控制策略的车速电流双闭环调速系统能够在驱动过程中实现车速无静差和阻抗行驶阻力突变，使得控制系统具有良好的动、静态特性。

关键词：纯电动汽车；控制策略；模糊控制；PID；建模仿真
Abstract: Aimed at the complexity of environment, difficulty to foresee and driving randomness, the speed-electric current double closed loop speed-adjusting system was used to control the speed, in which fuzzy self-adaptive PID control strategy was used for speed control, Bang-Bang control strategy was used for current control. The simulation model of the system was built under the Matlab/Simulink environment. Constant speed operating conditions and traveling uphill operating conditions were simulated based on the model. The dynamic characteristics between PID control strategy and fuzzy self-adaptive PID control strategy were compared. The result indicates that the speed-electric current double closed loop speed-adjusting system based on fuzzy PID can realize the floating of vehicle speed as well as the sudden changing of impedance driving resistance during driving, which makes the control system in a good dynamic and static characteristics.

Key words: pure electric vehicle; control strategy; fuzzy control; PID; modeling and simulation