关键词: 纯电动汽车；空调系统；模糊控制；Matlab/Simulink

Abstract: The air conditioning system of pure electric vehicle is a nonlinear and time-varying system, so it is not easy to get the mathematical model of the system. The conventional proportion integration differentiation (PID) control strategy is not effective, so this paper conducts simulation research on the air conditioning system of pure electric vehicle using fuzzy control strategy. Firstly, the heat load of summer car compartment is calculated, and the mathematical model of the system is established in Simulink under Matlab software. Then the Fuzzy Logic Controller module of the system is designed in Simulink. Finally, variable parameter simulation is carried out on the whole system. By changing the number of passengers in the cabin, the speed of the vehicle, the temperature outside the vehicle and the temperature inside the vehicle, simulation research is carried out. The results show that the temperature inside the air conditioning system of pure electric vehicle with fuzzy control strategy reaches the set temperature in a short time and the fluctuation is not large. In line with the performance requirements of pure electric vehicle air conditioning on response time, overshot, variable load capacity, compared with the traditional PID strategy control effect is better.

Key words: Pure electric vehicles; Air conditioning system; Fuzzy control; Matlab/Simulink