Control device structure of brake system
The present invention relates to an electronic control unit (ECU) structure of a brake system, and has an ECU board that is arranged, as an addition, in a symmetric or asymmetric structure in order to form redundancy in preparation for the breakdown of an ECU, and has sensors that are also arranged for implementation of the redundancy, and thus the brake system can be operated even if a part of the ECU breaks down.
1 . An electronic control unit (ECU) assembly structure of a brake system, comprising:
a housing having spaces separated by a partition;
a first control unit and a second control unit which are independently disposed in the spaces separated by the partition;
a first microcontroller unit (MCU) and a second MCU respectively positioned on the first control unit and the second control unit;
a cover configured to cover the spaces in which the first control unit and the second control unit are disposed;
a bus bar disposed to pass through the partition to connect the first control unit and the second control unit;
a motor; and
a first motor position sensor and a second motor position sensor which are disposed within a radius of a magnet mounted to the motor and connected to the first control unit and the second control unit, respectively,
wherein:
the second control unit constitutes redundancy of the first control unit to perform the same function as the first control unit; and
the motor, a coil, and a pedal sensor connected to the first control unit and the second control unit are connected to the first control unit and the second control unit in a symmetrical structure.
2 . The ECU assembly structure of claim 1 , further comprising a dual winding motor having a central axis positioned on an extension line of the partition configured to separate the spaces in which the first control unit and the second control unit are disposed,
wherein:
a first connector of the dual winding motor is connected directly to the first control unit; and
a second connector the dual winding motor is connected directly to the second control unit.
3 . The ECU assembly structure of claim 1 , wherein the motor has a central axis positioned on an extension line of the partition at which the first control unit and the second control unit face each other.
4 . The ECU assembly structure of claim 1 , further comprising a coil commonly connected to the first control unit and the second control unit,
wherein the coil is connected to the first control unit through a first bus bar and is connected to the second control unit through a second bus bar.
5 . An electronic control unit (ECU) assembly structure of a brake system, comprising:
a housing having spaces separated by a partition;
a first control unit and a second control unit which are independently disposed in the spaces separated by the partition;
a first microcontroller unit (MCU) and a second MCU respectively positioned on the first control unit and the second control unit;
a cover configured to cover the spaces in which the first control unit and the second control unit are disposed;
a bus bar disposed to pass through the partition and connect the first control unit and the second control unit;
a motor; and
a first motor position sensor and a second motor position sensor which are disposed within a radius of a magnet mounted to the motor and connected to the first control unit and the second control unit, respectively,
wherein:
the second control unit constitutes redundancy of the first control unit to perform the same function as the first control unit; and
the first control unit and the second control unit have an asymmetric structure in which connected components are not the same.
6 . The ECU assembly structure of claim 5 , further comprising a pedal sensor having two or more output channels,
wherein:
the pedal sensor is connected to a third printed circuit board (PCB);
a first channel output of the pedal sensor is connected from the third PCB to the first control unit through a fourth bus bar;
a second channel output of the pedal sensor is connected from the third PCB to the second control unit through a fifth bus bar; and
a center of the third PCB is positioned close to the first control unit so that the fourth bus bar passes through the partition configured to separate the spaces of the first control unit and the second control unit.
7 . The ECU assembly structure of claim 5 , further comprising a first pedal sensor, a second pedal sensor, a fourth printed circuit board (PCB), and a fifth PCB,
wherein:
an output of the first pedal sensor is connected to the first control unit through the fourth PCB; and
an output of the second pedal sensor is connected to the second control unit through the fifth PCB.
8 . The ECU assembly structure of claim 5 , further comprising a first pressure sensor, a second pressure sensor, and a third pressure sensor,
wherein:
the first pressure sensor and the second pressure sensor are connected to a pattern of the first control unit to be connected to the first MCU on the first control unit; and
the third pressure sensor is connected to a pattern of the second control unit to be connected to the second MCU on the second control unit.
9 . The ECU assembly structure of claim 5 , further comprising a first coil and a second coil,
wherein:
the first coil is connected directly to the first control unit and is connected to the second control unit through a sixth bus bar; and
the second coil is connected directly to the second control unit and is connected to the first control unit through a seventh bus bar.
10 . The ECU assembly structure of claim 5 , further comprising a third coil, a fourth coil, a third printed circuit board (PCB), and a fourth PCB,
wherein:
the third coil is connected to the third PCB;
the third PCB is connected to the first control unit through an eighth bus bar;
the fourth coil is connected to the fourth PCB; and
the fourth PCB is connected to the second control unit through a ninth bus bar.
11 . The ECU assembly structure of claim 6 , further comprising another magnet movably arranged above the pedal sensor to detect a position of a pedal and configured to be movable according to movement of the pedal.