A stator assembly includes a stator that opposes a rotor, which rotates about a central axis extending vertically, in a radial direction, a cover that accommodates an axially upper portion of the stator, a base portion that covers at least an axially lower side of the stator, and a circuit board that opposes the base portion in an axial direction and includes a sensor. At least one of the cover and the base portion includes a positioning portion, which is adjacent to the circuit board in the axial direction, the positioning portion being adjacent to the sensor.

A method and a system for detecting a logic level of a rotor of a motor, and a motor are disclosed. The method comprises: obtaining an analog voltage output by a position sensor for a winding of the motor; setting a first commutation voltage and a second commutation voltage; generating a logic level according to the analog voltage, the first commutation voltage and the second commutation voltage; and performing angle correction on the logic level according to a first angle corresponding to the first commutation voltage and a second angle corresponding to the second commutation voltage. The first commutation voltage is a commutation voltage for triggering a rising edge, and the second commutation voltage is a commutation voltage for triggering a falling edge. This method may accurately identify the logic level corresponding to the motor rotor, improve uniformity of a commutation voltage and prevent fluctuations in motor speed.

A method and a system for detecting a logic level of a rotor of a motor, and a motor are disclosed. The method comprises: obtaining an analog voltage output by a position sensor for a winding of the motor; setting a first commutation voltage and a second commutation voltage; generating a logic level according to the analog voltage, the first commutation voltage and the second commutation voltage; and performing angle correction on the logic level according to a first angle corresponding to the first commutation voltage and a second angle corresponding to the second commutation voltage. The first commutation voltage is a commutation voltage for triggering a rising edge, and the second commutation voltage is a commutation voltage for triggering a falling edge. This method may accurately identify the logic level corresponding to the motor rotor, improve uniformity of a commutation voltage and prevent fluctuations in motor speed.

The present disclosure provides a shift by wire (SBW) driving actuator capable of improving control performance and durability through control of a brushless direct current (BLDC) motor by an inductive sensor, and improving gear transmission efficiency by introducing a multistage teeth-shaped transmission unit configured to connect a sun gear and an output shaft of a reducer to transmit a rotational force to reduce a load resulting from eccentric rotation of the sun gear.

The present disclosure provides a shift by wire (SBW) driving actuator capable of improving control performance and durability through control of a brushless direct current (BLDC) motor by an inductive sensor, and improving gear transmission efficiency by introducing a multistage teeth-shaped transmission unit configured to connect a sun gear and an output shaft of a reducer to transmit a rotational force to reduce a load resulting from eccentric rotation of the sun gear.

A brushless direct-current (BLDC) motor is provided with a stator assembly including a stator core and stator windings wound around stator teeth, a rotor shaft extending along a longitudinal axis, and a rotor including a rotor core mounted on the rotor shaft supporting at least one permanent magnet. A circuit board is provided including a main body and at least one leg radially projecting from the main body to support at least one magnetic sensor near the permanent magnet. The leg of the circuit board oriented along a radial plane that intersects the stator windings.

A brushless direct-current (BLDC) motor is provided with a stator assembly including a stator core and stator windings wound around stator teeth, a rotor shaft extending along a longitudinal axis, and a rotor including a rotor core mounted on the rotor shaft supporting at least one permanent magnet. A circuit board is provided including a main body and at least one leg radially projecting from the main body to support at least one magnetic sensor near the permanent magnet. The leg of the circuit board oriented along a radial plane that intersects the stator windings.

A cartridge-based fan apparatus includes a cartridge component, wherein the cartridge component includes at least an airflow driver and at least a first spindle secured to a rotary device, a cartridge housing unit, wherein the cartridge housing unit includes a cartridge insertion chamber, a motor, and a drive element that mechanically couples the motor to the spindle when the cartridge is inserted in the cartridge insertion chamber, and a securing mechanism that secures the cartridge component in the cartridge insertion chamber.

A cartridge-based fan apparatus includes a cartridge component, wherein the cartridge component includes at least an airflow driver and at least a first spindle secured to a rotary device, a cartridge housing unit, wherein the cartridge housing unit includes a cartridge insertion chamber, a motor, and a drive element that mechanically couples the motor to the spindle when the cartridge is inserted in the cartridge insertion chamber, and a securing mechanism that secures the cartridge component in the cartridge insertion chamber.

The invention relates to an external rotor device with a rotor housing designed to receive at least one rotor and with at least one sensor magnet provided on the rotor housing. The sensor magnet is arranged/can be arranged in sensory correlation with and in a predefinable relative position relative to the rotor. According to the invention, the external rotor device is characterised in that the external rotor device has at least one ring which is integrally formed on the rotor housing, the ring having at least one pocket which is arranged to receive the sensor magnet, the sensor magnet being arranged/arrangeable in the pocket in such a way and the ring being arranged/arrangeable in a predefinable relative position relative to the rotor on/in the rotor housing in such a way that the relative position of the sensor magnet relative to the rotor in at least one spatial direction is predefined by the materially integral formation, in particular at least with regard to the radial direction and also with regard to the circumferential direction and/or the axial direction.