An electromechanical brake device and a method of controlling the same provide the electromechanical brake device capable of estimating motor characteristics, and the method capable of controlling the electromechanical brake device by estimating motor characteristics. The electromechanical brake device includes a reaction force generating mechanism which is installed between a piston and one side of a caliper housing, generates reaction force applied against straight moving force of the piston, which moves backward in an axial direction, in a direction in which a braking operation is released, and applies reaction force to the piston; a sensor which detects a motor operating state; and a controller which estimates a motor torque constant that represents a correlation between motor electric current and motor rotational torque, based on motor operating state information detected by the sensor when an operation of the motor is controlled.

A disc brake assembly includes a rotor with an ABS tone ring insert assembly that functions as a rotation indicator in an anti-lock braking system. The insert is positioned in the hat of a rotor disc in a spaced relationship and is mounted to the mounting flange of the rotor disc. Forming the ring insert separately from the rotor disc also allows different coating materials to be used on the tone ring that may be more heat resistant. The ring insert assembly can be made of powder metal or made as a cast iron cylinder with a toothed cap made of powder metal having a corrosion resistant coating. Cost savings can be realized along with high performance when only a portion of the assembly if made of powder metal and coated.

A disc brake assembly includes a rotor with an ABS tone ring insert assembly that functions as a rotation indicator in an anti-lock braking system. The insert is positioned in the hat of a rotor disc in a spaced relationship and is mounted to the mounting flange of the rotor disc. Forming the ring insert separately from the rotor disc also allows different coating materials to be used on the tone ring that may be more heat resistant. The ring insert assembly can be made of powder metal or made as a cast iron cylinder with a toothed cap made of powder metal having a corrosion resistant coating. Cost savings can be realized along with high performance when only a portion of the assembly if made of powder metal and coated.

A bracket for mounting an anti-lock braking system sensor to a vehicle axle adjacent to a tone ring. The bracket includes a tubular body portion with a surface defining an opening for receiving the anti-lock braking system sensor. A pair of legs, each extending from the body portion. A pair of feet, each define an end portion of a respective one of the pair of legs. Each of the pair of feet is adapted for attachment to an exterior surface of the vehicle axle. The body portion, the pair of legs and the pair of feet are integrally formed as one-piece from powdered metal.

A bracket for mounting an anti-lock braking system sensor to a vehicle axle adjacent to a tone ring. The bracket includes a tubular body portion with a surface defining an opening for receiving the anti-lock braking system sensor. A pair of legs, each extending from the body portion. A pair of feet, each define an end portion of a respective one of the pair of legs. Each of the pair of feet is adapted for attachment to an exterior surface of the vehicle axle. The body portion, the pair of legs and the pair of feet are integrally formed as one-piece from powdered metal.

A brake system includes an electromechanical brake having a friction surface, a lining support having a brake lining, an electric motor for moving the lining support, and a control and monitoring unit. The control and monitoring unit ascertains, from a first value ascertained during a first movement of the lining support by the electric motor, an operating parameter of at least one part of the brake, and a second value ascertained during a second movement opposite to the first movement of the lining support, by the electric motor, an operating behavior value for a real operating behavior of the relevant brake, and ascertains, by comparing the at least one real operating behavior value to at least one stored operating behavior expectation, a correction factor. The brake control system is corrected by the one correction factor and a regulator of the electric motor is activated using the corrected brake control signal.

An attachment method an assembly for an induction sensing tone ring is provided comprising a rotating part, the rotating part having a circular pocket. A spring is provided that is received in the rotating part circular pocket. A tone ring is received in the tone ring circular pocket on top of the spring. The rotating part has a plurality of retaining ledges, with each retaining ledge extending radially inward into the rotating part circular pocket from a wall of the rotating part forming the pocket. Each retaining ledge forms a retaining groove. The tone ring has a plurality of locating tab assemblies, each locating tab assembly being received in one of the retaining grooves of the brake rotor circular pocket.

An attachment method an assembly for an induction sensing tone ring is provided comprising a rotating part, the rotating part having a circular pocket. A spring is provided that is received in the rotating part circular pocket. A tone ring is received in the tone ring circular pocket on top of the spring. The rotating part has a plurality of retaining ledges, with each retaining ledge extending radially inward into the rotating part circular pocket from a wall of the rotating part forming the pocket. Each retaining ledge forms a retaining groove. The tone ring has a plurality of locating tab assemblies, each locating tab assembly being received in one of the retaining grooves of the brake rotor circular pocket.

A band brake actuator is for actuating a band brake on a planetary gearset. The band brake actuator comprises a actuator shaft; an output finger; and a linkage assembly. The linkage assembly connects the actuator shaft to the output finger such that rotation of the actuator shaft in a first rotation direction causes the output finger to engage the band brake on the planetary gearset, and such that rotation of the actuator shaft in an opposite, second rotation direction causes the output finger to disengage the band brake from the planetary gearset. Engagement of the band brake and the planetary gearset shifts the planetary gearset into one of a forward and a reverse gear and wherein disengagement of the band brake and the planetary gearset shifts the planetary gearset into a neutral gear.

There are provided a brake control device and a brake control method capable of estimating a rigidity change due to a temperature change, uneven wear of a brake pad, an inclination of a brake disc, or the like with a low memory load and with high accuracy up to a region with larger thrust than a measurement range. A brake control device controls a braking unit including a friction member pushed on a braking target member, a piston that abuts on the friction member and moves in a linear motion direction by rotation of an electric motor, and a thrust detection unit that detects thrust of the friction member to the braking target member. The brake control device estimates a relation between a piston position being rigidity of the braking unit, and the thrust, based on a first piston range that is a thrust change as a first inclination with respect to the piston position, and a second piston range that is a thrust change as a second inclination different from the first inclination, with respect to the piston position.