US 12,728,826 B2Granted

Brake system with control redundancy

AssigneeHuawei Digital Power Technologies Co., Ltd.

InventorsPengcheng Jing, Yongsheng Zhang, Chongxi Huang, Hui Ni

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Abstract

A brake system with control redundancy includes a central controller and four wheel end brake apparatuses. The central controller receives one channel of brake pedal travel signal and one channel of brake pedal force signal. A wheel end controller is configured to receive the other channel of brake pedal travel signal and the other channel of brake pedal force signal. One of the sensors fails, and the other sensor can still detect a motion state of a brake pedal, to improve operational reliability of the brake system with control redundancy. In addition, even when the central controller fails, the four wheel end brake apparatuses can be controlled, based on the other channel of brake pedal travel signal and the other channel of brake pedal force signal, to output brake forces.

Claims20

Dependent claims

A brake system comprising:

a central controller configured to receive a first channel of a brake pedal travel signal from a brake pedal travel sensor and a first channel of a brake pedal force signal from a brake pedal force sensor;
and
four wheel end brake apparatuses, wherein each wheel end brake apparatus of the wheel end brake apparatuses comprises
a wheel end controller and
a brake actuator, the wheel end controller is configured to control the brake actuator to output a brake force to a brake disc of a vehicle;
one wheel end controller of the four wheel end controllers is configured to receive a second channel of the brake pedal travel signal from the brake pedal travel sensor and a second channel of the brake pedal force signal from the brake pedal force sensor, the first channel of the brake pedal travel signal and the second channel of the brake pedal travel signal indicate a travel distance of a brake pedal, and the first channel of the brake pedal force signal and the second channel of the brake pedal force signal indicate a force acting on the brake pedal.

3 more elements

A brake system comprising:

a central controller configured to receive two channels of brake pedal travel signals from a brake pedal travel sensor;
and
four wheel end brake apparatuses, wherein each wheel end brake apparatus of the wheel end brake apparatuses comprises
a wheel end controller and
a brake actuator, the wheel end controller is configured to control the brake actuator to output a brake force to a brake disc of a vehicle one wheel end controller of the four wheel end controllers is configured to receive two channels of brake pedal force signals from the brake pedal force sensor;
the two channels of brake pedal travel signals indicate a travel distance of a brake pedal, and the two channels of brake pedal force signals indicate a force acting on the brake pedal.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 19/049,115Filed 10 Feb 2025
Priority: CN 202410233256.029 Feb 2024
Published: US 2025/0340188 A16 Nov 2025
Granted: 8 Sep 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification24 codes

B60T 7/042
Foot actuated: by electrical means, e.g. using travel or force sensors
B60T 8/172
Using electrical or electronic regulation means to control braking: determining control parameters used in the regulation, e.g. by calculations…
B60T 1/065
Acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels: employing disc
B60T 8/171
Using electrical or electronic regulation means to control braking: detecting parameters used in the regulation; Measuring values used in the…