Electronic parking brake system and control method therefor
AssigneeHl Mando 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 until a parking operation is started from a time of service braking during driving, determine a clamping force required for parking based on the estimated weight of the vehicle during the 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 until a parking operation is started from 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 the 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 until a parking operation is started from a time of service braking during driving;
- determining a clamping force required for parking based on the estimated weight of the vehicle during the parking operation;
- and
- operating the electronic parking brake to generate the determined clamping force.
Dependencies are inferred from the claim text.