Patent ID: 9531310
Filing Date: 2016-12-27
CPC Classification: H02P

Claim Text:
1. A method for computing a motor speed of a motor and a rotor position of the motor using a hall sensor, comprising: determining, by an inverter controller having installed therein a microcomputer which includes a memory configured to store program instruction and a central processing unit (CPU) configured to execute the program instructions, whether a signal value of the hall sensor is changed; after determining that the signal value of the hall sensor is changed, computing, by the inverter controller, a time T computing, by the inverter controller, a motor speed ω computing, by the inverter controller, a rotor position based on a time difference ΔT between the T wherein the hall sensor is mounted within the motor as a position sensor, the inverter controller is configured to receive a signal of the hall sensor to operate the motor, and the microcomputer is configured to store a time at which point the inverter controller senses the change in the signal value of the hall sensor.