Abstract: A method for determining an updated rotor speed for a motor is provided. The method obtains, by a processor, a current rotor speed of the motor; determines a current mode for the motor, based on the current rotor speed, wherein the current mode comprises a low-speed mode, an intermediate speed mode, or a high-speed mode; detects one or more Hall events associated with a plurality of digital Hall Effect sensors coupled to the motor, based on the current mode; calculates, by the processor, a new rotor speed for the motor, based on the one or more Hall events and the current mode; and transmits the new rotor speed as a motor speed feedback signal, for digital speed control of the motor.

Abstract: A system and method for controlling a permanent magnet brushless motor is provided. The system, for example, may include, but is not limited to, at least one Hall effect sensor configured to generate data at each Hall effect event, and a processor communicatively coupled to the at least one Hall effect sensor, the processor configured to determine, aperiodically at each Hall effect event, an angular rate of the permanent magnet brushless motor and a determined angular rate correction factor based upon the generated data, determine, periodically at a predetermined frequency, a new estimated electrical position of the permanent magnet brushless motor based upon the determined angular rate of the permanent magnet brushless motor and the determined angular rate correction factor, and generate, periodically at the predetermined frequency, a field oriented control signal for the permanent magnet brushless motor based upon the new estimated electrical position of the permanent magnet brushless motor.

Abstract: A method for determining an updated rotor speed for a motor is provided. The method obtains, by a processor, a current rotor speed of the motor; determines a current mode for the motor, based on the current rotor speed, wherein the current mode comprises a low-speed mode, an intermediate speed mode, or a high-speed mode; detects one or more Hall events associated with a plurality of digital Hall Effect sensors coupled to the motor, based on the current mode; calculates, by the processor, a new rotor speed for the motor, based on the one or more Hall events and the current mode; and transmits the new rotor speed as a motor speed feedback signal, for digital speed control of the motor.

Abstract: A method for calibrating a motor, the motor comprising a permanent magnet synchronous motor, is provided. The method generates a rotating magnetic field using a voltage vector, the rotating magnetic field configured to rotate at a constant angular velocity independent of an actual rotor position, and the rotating magnetic field rotating in a first direction; identifies, by a processor, timing data associated with a plurality of digital Hall effect sensors; computes, by the processor, accurate positions for each of the plurality of digital Hall effect sensors, using the timing data and the constant angular velocity; creates a reference table in system memory, by the processor, the reference table comprising the accurate positions; and during operation of the motor, calculates accurate angular velocity values for the motor, using the reference table.