Vacuum cleaner is a common cleaning tool in modern households that combines cleaning and vacuuming functions. The power components of a vacuum cleaner mainly include the vacuum cleaner motor and the brushless motor controller. The fan impeller of the vacuum cleaner is driven at high speed by the electric motor, which quickly removes the air from the impeller and continuously replenishes the suction part of the air into the fan. With the help of a dust brush, the dust and dirt are sucked into the chamber. The power of portable vacuum cleaners is generally below 250W.