BRAKE CONTROL APPARATUS
First Claim
1. A brake control apparatus comprising:
- a booster configured to increase an operation force exerted by a driver on a brake operation member to generate a hydraulic pressure in a master cylinder;
a booster state detection unit configured to detect a state of the booster and transmit a corresponding signal;
a hydraulic control device configured to control a hydraulic pressure in a wheel cylinder to which the hydraulic pressure from the master cylinder is supplied;
a hydraulic controller configured to control the hydraulic control device;
a first communication line configured to be used to transmit the signal to the hydraulic controller;
a second communication line arranged in parallel with the first communication line and configured to be used to transmit the signal to the hydraulic controller; and
a booster unsteady state determination unit provided in the hydraulic controller and configured to determine whether the booster is in an unsteady state based on communication states of the signals transmitted via the first communication line and the second communication line.
2 Assignments
0 Petitions
Accused Products
Abstract
A brake control apparatus includes a booster configured to increase a driver'"'"'s operation force on a brake operation member to generate a hydraulic pressure in a master cylinder, a booster state detection unit configured to detect a state of the booster and transmit a corresponding signal, a hydraulic control device configured to control a hydraulic pressure in a wheel cylinder to which the hydraulic pressure from the master cylinder is supplied, a hydraulic controller configured to control the hydraulic control device, first and second communication lines arranged in parallel with each other for transmitting the signal to the hydraulic controller, and a booster unsteady state determination unit provided in the hydraulic controller and configured to determine whether the booster is in an unsteady state based on communication states of the signals transmitted via the first and second communication lines.
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Citations
23 Claims
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1. A brake control apparatus comprising:
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a booster configured to increase an operation force exerted by a driver on a brake operation member to generate a hydraulic pressure in a master cylinder; a booster state detection unit configured to detect a state of the booster and transmit a corresponding signal; a hydraulic control device configured to control a hydraulic pressure in a wheel cylinder to which the hydraulic pressure from the master cylinder is supplied; a hydraulic controller configured to control the hydraulic control device; a first communication line configured to be used to transmit the signal to the hydraulic controller; a second communication line arranged in parallel with the first communication line and configured to be used to transmit the signal to the hydraulic controller; and a booster unsteady state determination unit provided in the hydraulic controller and configured to determine whether the booster is in an unsteady state based on communication states of the signals transmitted via the first communication line and the second communication line. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A brake control apparatus comprising:
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an electric booster configured to increase an operation force exerted by a driver on a brake operation member to generate a hydraulic pressure in a master cylinder; a booster controller configured to control the electric booster; a booster state detection unit provided in the booster controller and configured to detect an abnormal state of the electric booster and transmit an abnormality detection signal; a hydraulic control device configured to control a hydraulic pressure in a wheel cylinder to which the hydraulic pressure from the master cylinder is supplied; a hydraulic controller configured to control the hydraulic control device; a first communication line configured to be used to transmit the abnormality detection signal to the hydraulic controller; a second communication line arranged in parallel with the first communication line and configured to be used to transmit the abnormality detection signal to the hydraulic controller; and a booster unsteady state determination unit provided in the hydraulic controller and configured to determine that the electric booster is in an unsteady state if both the abnormality detection signals transmitted via the first communication line and the second communication line indicate the abnormal state of the electric booster, wherein the hydraulic controller includes a backup control unit configured to control the hydraulic pressure in the wheel cylinder according to a driver'"'"'s brake operation amount with use of the hydraulic control device if the booster unsteady state determination unit determines that the electric booster is in the unsteady state. - View Dependent Claims (18)
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19. A brake control apparatus comprising:
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a booster configured to increase an operation force exerted by a driver on a brake operation member to generate a hydraulic pressure in a master cylinder; a booster controller configured to control the booster; a booster state detection unit configured to detect a state of the booster and transmit a corresponding signal; a hydraulic control device configured to control a hydraulic pressure in a wheel cylinder to which the hydraulic pressure from the master cylinder is supplied; a hydraulic controller configured to control the hydraulic control device; and redundantly arranged communication lines configured to be used to transmit the signal between the controllers, wherein whether the booster is in an unsteady state is determined based on communication states of the respective communication lines. - View Dependent Claims (20)
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21. A brake control apparatus configured to be mounted on a vehicle, the vehicle including a booster configured to increase an operation force exerted by a driver on a brake operation member to generate a hydraulic pressure in a master cylinder, and a booster state detection unit configured to detect a state of the booster and transmit a corresponding signal, the brake control apparatus comprising:
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a hydraulic control device configured to control a hydraulic pressure in a wheel cylinder to which the hydraulic pressure from the master cylinder is supplied; and a hydraulic controller configured to control the hydraulic control device, wherein the hydraulic controller is configured to receive the signal from the booster state detection unit via each of first and second communication lines arranged in parallel with each other, and wherein the hydraulic controller includes a booster unsteady state determination unit configured to determine whether the booster is in an unsteady state based on communication states of the signals received via the first communication line and the second communication line.
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22. A brake control apparatus configured to be mounted on a vehicle, the vehicle including an electric booster configured to increase an operation force exerted by a driver on a brake operation member to generate a hydraulic pressure in a master cylinder, a booster controller configured to control the electric booster, and a booster state detection unit provided in the booster controller and configured to detect an abnormal state of the electric booster and transmit an abnormality detection signal, the brake control apparatus comprising:
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a hydraulic control device configured to control a hydraulic pressure in a wheel cylinder to which the hydraulic pressure from the master cylinder is supplied; and a hydraulic controller configured to control the hydraulic control device, wherein the hydraulic controller is configured to receive the abnormality detection signal from the booster state detection unit via each of first and second communication lines, wherein the hydraulic controller includes a booster unsteady state determination unit configured to determine that the electric booster is in an unsteady state if both the abnormality detection signals transmitted via the first communication line and the second communication line indicate an abnormal state of the electric booster, and wherein the hydraulic controller comprises a backup control unit configured to control the hydraulic pressure in the wheel cylinder according to a driver'"'"'s operation amount with use of the hydraulic control device if the booster unsteady state determination unit determines that the booster is in the unsteady state.
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23. A brake control apparatus configured to be mounted on a vehicle, the vehicle including a booster configured to increase an operation force exerted by a driver on a brake operation member to generate a hydraulic pressure in a master cylinder, a booster controller configured to control the booster, and a booster state detection unit configured to detect a state of the booster and transmit a corresponding signal, the brake control apparatus comprising:
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a hydraulic control device configured to control a hydraulic pressure in a wheel cylinder to which the hydraulic pressure from the master cylinder is supplied; and a hydraulic controller configured to control the hydraulic control device, wherein the hydraulic controller is configured to receive the signal from the booster state detection unit via each of communication lines redundantly arranged between the controllers, and is configured to determine whether the booster is in an unsteady state based on communication states of the respective communication lines.
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Specification