模糊PID控制策略液压混合动力车辆研究

Research in Hydraulic Hybrid Vehicles Based onFuzzy PID Control Strategy

介绍了当下汽车产业状况,分析了基于规则PID的控制策略和单纯性模糊控制策略的燃油经济性,结果显示,其在仿真循环的某些车辆特需工况(如急加速、紧急制动等),燃油经济性不能满足节能减排需求。因此,研究设计了一种基于模糊PID的控制策略,应用于液压混合动力汽车,仿真验证表明:在模糊PID控制策略下,汽车发动机扭矩工作点分布等重要燃油经济性指标,符合验证要求,是一种有效控制策略。

The current situation of the automobile industry was introduced in this paper.The fuel economy were analyzed based on the control strategy and the simple fuzzy control strategy of PID.It is found that it fails to meet the requirements of energy conservation and emission reduction in some special vehicle conditions(such as rapid acceleration,emergency braking etc.)of the simulation cycle.The control strategy based on Fuzzy PID was researched in this paper,which was applied to the Hydraulic Hybrid Vehicle.The simulation results showed:the Fuzzy PID met the verification requirements,the important fuel economy indexes,such as the distribution of the torque working point of the automobile engine.It is proved to be an effective control strategy under the Fuzzy PID control strategy.