Interference control method and device, purification equipment and computer readable storage medium

The invention discloses an interference control method. The interference control method comprises the steps of obtaining a feedback signal; adjusting the input voltage of a motor; judging whether a feedback signal is an interference signal or not according to the change of the feedback signal before and after the input voltage of the motor is adjusted and the input voltage adjustment direction; and if so, controlling a motor control terminal to input critical voltage. The invention further discloses an interference control device, purification equipment and a computer readable storage medium.The technical scheme of the invention enables the motor to perform judgment on the feedback signal in the process of adjusting the input voltage of the motor according to the obtained feedback signal,and maintains the control terminal of the motor to input the critical voltage if the feedback signal is judged to be an interference signal, thereby enabling the motor to still operate with the critical voltage even in an int