US 11,999,338 B2Granted

Integrated electronic brake apparatus and control method thereof

AssigneeHyundai Mobis Co., Ltd.

InventorsJae Hyun Park, Ju Ho Lee

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Abstract

Disclosed are an integrated electronic brake apparatus and a control method thereof. The integrated electronic brake apparatus includes a main controller provided in a first area and configured to: drive a braking motor according to an operation of a pedal, drive an additional braking valve for additional braking, and generate a main control monitoring signal; the sub-controller provided in a second area and configured to: drive a main braking valve for braking of a vehicle and the braking motor according to the operation of the pedal, control a power of the additional braking valve, and generate a sub-control monitoring signal; and a connection bus configured to transfer a transmission/reception signal between the main controller and the sub-controller by connecting the first area and the second area within an enclosure with each other.

Claims18

Dependent claims

An integrated electronic brake apparatus configured for braking a vehicle, the integrated electronic brake apparatus comprising a main controller positioned at a first area within an enclosure, a sub-controller positioned at a second area within the enclosure, and a connection bus extending between the first and second areas and configured to transmit a signal between the main controller and the sub-controller,

wherein the main controller is configured to:
receive (1) one or more values of a pedal sensor, a cylinder pressure sensor, and a wheel speed sensor and (2) an electronic parking brake (EPB) signal in accordance with a sub-control monitoring signal generated by the sub-controller;
drive a braking motor in accordance with an operation of a pedal to provide main braking for the vehicle;
drive an additional braking valve for additional braking;
and
generate a main control monitoring signal, and
wherein the sub-controller is configured to:
receive one or more of the values of the pedal sensor and the wheel speed sensor in accordance with the main control monitoring signal generated by the main controller;
drive a main braking valve for braking the vehicle and the braking motor in accordance with the operation of the pedal;
and
control a power of the additional braking valve, and generate the sub-control monitoring signal,
wherein:
the main controller includes a first watchdog signal generation unit configured to generate the main control monitoring signal with an indication of a failure of the main controller, and
the sub-controller is configured to take over control of the main braking of the vehicle from the main controller based on the indication of failure of the main controller from the first watchdog signal generation unit.

11 more elements

A method for controlling an integrated electronic brake apparatus for braking a vehicle, comprising:

controlling, by a first micro control unit (MCU) and a second MCU in cooperation with each other, a main braking valve driving unit, a first motor driving unit, a second motor driving unit, an electronic parking brake (EPB) driving unit, and an additional braking valve driving unit;
sensing, by the first and second MCUs, a main control monitoring signal generated by a main controller and a sub-control monitoring signal generated by a sub-controller;
turning off, by the second MCU, an additional braking valve power switch when the second MCU senses the main control monitoring signal;
receiving, by the second MCU, a pedal stroke value and a wheel speed value from a second pedal signal input unit and a second wheel speed input unit;
controlling, by the second MCU, the main braking valve driving unit and the second motor driving unit in accordance with the pedal stroke value and the wheel speed value;
receiving, by the first MCU, a pedal stroke value and a wheel speed value from a first pedal signal input unit and a first wheel speed input unit when the first MCU senses the sub-control monitoring signal;
and
controlling, by the first MCU, the first motor driving unit and the EPB driving unit in accordance with the pedal stroke value and the wheel speed value,
wherein:
the first MCU is coupled to a first watchdog signal generation unit configured to generate the main control monitoring signal with an indication of a failure of the first MCU, and
the second MCU is configured to take over control of main braking of the vehicle from the first MCU based on the indication of failure of the first MCU from the first watchdog signal generation unit.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/677,274Filed 22 Feb 2022
Priority: KR 10-2021-002405923 Feb 2021
Published: US 2022/0266805 A125 Aug 2022
Granted: 4 Jun 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification15 codes

B60T 8/885
With failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means: using electrical…
B60T 7/042
Foot actuated: by electrical means, e.g. using travel or force sensors
B60T 8/92
With failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means: automatically…
B60T 13/741
With electrical assistance or drive: acting on an ultimate actuator

Family

US 2022/0266805 A1Pre-grant publication · published 25 Aug 2022
US 11,999,338 B2This patent

From the US filing history. Foreign family members aren’t listed.

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