Electronic parking brake system and control method therefor
AssigneeMando Corporation
InventorJin NAMGUNG
Life of this patent
Estimating the term…
Abstract
An electronic parking brake system including: an electronic parking brake provided to generate a clamping force on a wheel of a vehicle; and a controller configured to estimate a weight of the vehicle based on a wheel pressure and a longitudinal acceleration of the vehicle at a time of service braking during driving, determine a clamping force required for parking based on the estimated weight of the vehicle during a parking operation, and operate the electronic parking brake to generate the determined clamping force.
Claims15
An electronic parking brake system, comprising:
- an electronic parking brake provided to generate a clamping force on a wheel of a vehicle;
- and
- a controller configured to estimate a weight of the vehicle based on a wheel pressure and a longitudinal acceleration of the vehicle at a time of service braking during driving, determine a clamping force required for parking based on the estimated weight of the vehicle during a parking operation, and operate the electronic parking brake to generate the determined clamping force.
An electronic parking brake system comprising a motor actuator operated by an electric motor, the electronic parking brake system comprising:
- a motor drive circuit configured to drive the electric motor;
- a current sensor configured to detect a current flowing through the electric motor;
- a communication interface configured to communicate with a system mounted on a vehicle to receive a wheel pressure and a longitudinal acceleration of the vehicle;
- and
- a controller configured to receive the wheel pressure and the longitudinal acceleration of the vehicle at a time of service braking during driving from the communication interface, estimate a weight of the vehicle based on the received wheel pressure and longitudinal acceleration of the vehicle, change a target current based on the estimated weight of the vehicle during a parking operation, and drive the electric motor through the motor drive circuit so that a motor current detected by the current sensor reaches the changed target current.
A control method of an electronic parking brake system comprising an electronic parking brake provided to generate a clamping force on a wheel of a vehicle, the control method comprising:
- estimating a weight of the vehicle based on a wheel pressure and a longitudinal acceleration of the vehicle at a time of service braking during driving;
- determining a clamping force required for parking based on the estimated weight of the vehicle during a parking operation;
- and
- operating the electronic parking brake to generate the determined clamping force.
Dependencies are inferred from the claim text.