Motor Control for a Vacuum Cleaner

摘要

A vacuum cleaner includes a nozzle, an air-filtering dirt receptacle, and a motor. A fan of the vacuum cleaner is configured to be driven by the motor to drive a flow of air that carries dirt from a surface through the nozzle and into the receptacle to clean the surface. A controller of the vacuum cleaner provides a notification to a user of the vacuum cleaner indicative of an excessive amount of dirt in the receptacle when current drawn by the motor drops below a threshold value.