DC-DC Switched Mode Power Supply Based on Fuzzy Control

The research of a DC-DC switched mode power supply based on fuzzy control,which is different from classic PID control,and does not require accurate mathematical model of system,is introduced.The fuzzy controller is designed according to the system's requirements.The error between the reference voltage and the practical output voltage,and the differential of error are set as the input of the controller.According to proper rules,the output of the controller-duty cycle is obtained to controller the switch.The design process and the simulation model in MATLAB of the fuzzy controller are introduced in detail.The simulation results show that the system works with good stability and dynamic properties.