Vehicle brake system
AssigneeHyundai Mobis Co., Ltd.
InventorWoo Hyun Hwang
Life of this patent
Estimating the term…
Abstract
A vehicle brake system is disclosed for dynamic braking of a vehicle based on wheel speeds, including a first wheel speed sensor, a second wheel speed sensor, a main controller for calculating a first wheel speed of each wheel by a signal received from the first wheel speed sensor to generate a first wheel speed signal and to perform dynamic braking control based on the first wheel speed signal, an auxiliary controller for calculating a second wheel speed of each wheel by a signal received from the second wheel speed sensor to generate a second wheel speed signal, and digital signal transfer lines for transceiving a normal signal or abnormality signal between the main and auxiliary controllers.
Claims13
A vehicle brake system comprising:
- a first wheel speed sensor configured to detect a speed of a wheel and generate a first signal indicating the speed of the wheel detected by the first wheel speed sensor;
- a second wheel speed sensor configured to detect the speed of the wheel and generate a second signal indicating the speed of the wheel detected by the second wheel speed sensor;
- a main controller configured to generate, based on the first signal generated by the first wheel speed sensor, a first wheel speed signal, and control braking of the wheel based on the first wheel speed signal;
- and
- an auxiliary controller configured to generate, based on the second signal generated by the second wheel speed sensor, a second wheel speed signal,
- wherein the main controller is further configured to:
- determine whether a difference between the first and second wheel speed signals is within a predetermined tolerance range;
- in response to determining that the difference between the first and second wheel speed signals is within a predetermined tolerance range, transmitting, to the auxiliary controller, a normal signal;
- and
- in response to determining that the difference between the first and second wheel speed signals is not within the predetermined tolerance range, transmitting, to the auxiliary controller, an abnormal signal.
A method of operating a system for controlling braking of a wheel, the method comprising:
- providing, to a main controller, a first signal indicating a speed of a wheel detected by a first wheel speed sensor, the main controller configured to determine a first wheel speed based on the first signal and control braking of the wheel based on the determined first wheel speed;
- providing, to an auxiliary controller, a second signal indicating the speed of the wheel detected by a second wheel speed sensor, the auxiliary controller configured to determine a second wheel speed based on the second signal;
- determining whether a difference between the first and second wheel speeds is within a predetermined tolerance range;
- in response to determining that the difference between the first and second wheel speeds is not within the predetermined tolerance range, determining whether the first or second wheel speed sensor is malfunctioning;
- and
- in response to determining that the first wheel speed sensor is malfunctioning, providing the second signal to the main controller such that the main controller determines the first wheel speed based on the second signal.
Dependencies are inferred from the claim text.