Brake-by-wire (BBW) electronic control actuator unit and use thereof

A brake-by-wire (BBW) electronic control actuator unit, comprising a machine body, as well as a permanent magnet brushless direct-current motor (PMBDCM) and speed-reducing torque-increasing gear sets integrated in the machine body, wherein the PMBDCM comprises a stator assembly and a rotor assembly;

• the rotor assembly is connect to a first end of a motor shaft;
• a second end of the motor shaft is connect to an input end of one of the speed-reducing torque-increasing gear sets;
• an output end of the speed-reducing torque-increasing gear sets is connected to an output shaft;
• and the output shaft extends out of the machine body;
• wherein the rotor assembly is in interference fit with the moto shaft;
• and the motor shaft is in interference fit or key connection with a parking locking electromagnetic assembly;
• the parking locking electromagnetic assembly comprises a locking disc that is in key connection or interference fit with the motor shaft and is demagnetize, a locking latch, and a locking mounting housing;
• a locating hole is formed at an outer circumferential side of the locking disc;
• the locking latch corresponds to the locating hole;
• and the locking latch is provided in the locking mounting housing vertically and slidably;
• and
• the locking latch is an electromagnetic latch the electromagnetic latch is electrically connected to a power cord by sequentially passing through a wiring end provided on the locking mounting housing, a signal acquisition chip and a connector provided on an inner wall of the machine body;
• and the connector is further electrically connected to the stator assembly through the power cord.