Fuzzy PID control method for range hoods wind speed automatic adjustment based on MATLAB simulation

In order to achieve the function of adjusting wind speed according to the surrounding gas concentration for range hoods, HT6338A chip combinational circuits, Fuzzy PID control and MATALB software are applied to simulate the function that are referred above in supposed situation. Results showed that when gas concentration was near to 0.824mg/m³, the control circuit's responsive time was almost the same to reality; with the increasing of gas concentration, control circuit's lag time showed a positive correlation while the lag time of unit gas concentration showed a negative trend. It demonstrates that the method of Fuzzy PID is effective within considering a certain error.