| US 7,597,409 B2 | ||
| Control unit of brake apparatus for vehicle | ||
| Koichi Kokubo, Nagoya (Japan); Kazuya Maki, Nagoya (Japan); and Masayuki Naito, Takahama (Japan) | ||
| Assigned to Advics Co., Ltd., Kariya, Aichi-Pref. (Japan) | ||
| Filed on Mar. 22, 2007, as Appl. No. 11/723,947. | ||
| Claims priority of application No. 2006-102236 (JP), filed on Apr. 03, 2006; and application No. 2006-107284 (JP), filed on Apr. 10, 2006. | ||
| Prior Publication US 2007/0228812 A1, Oct. 04, 2007 | ||
| Int. Cl. B60T 8/64 (2006.01) | ||
| U.S. Cl. 303—152 [303/3; 303/155] | 12 Claims |
| 1. A control unit of a brake apparatus for a vehicle having:
basic hydraulic pressure generating means for generating a basic hydraulic pressure in accordance with an operation at a brake-operating
member by a driver;
a pump suctioning a brake fluid with the basic hydraulic pressure from a hydraulic pressure circuit in order to generate a
pressurizing hydraulic pressure for generating hydraulic pressure that is higher than the basic hydraulic pressure; and a
pressure difference control valve controlling an amount of pressurization relative to the basic hydraulic pressure by use
of the pressurizing hydraulic pressure generated by driving the pump, wherein a hydraulic braking force is generated by applying
wheel cylinder hydraulic pressure to a wheel cylinder, the wheel cylinder hydraulic pressure obtained by adding the amount
of pressurization to the basic hydraulic pressure, and the control unit of the brake apparatus for the vehicle comprising:
target braking force determining means for determining a target value corresponding to a target braking force that is a target
value of a braking force generated at the wheels on the basis of a basic value corresponding to the basic hydraulic pressure;
compensation braking force controlling means for controlling a compensation braking force so that a total value corresponding
to a total braking force is equal to the target value corresponding to the target braking force, the total braking force obtained
by adding a basic hydraulic braking force that is a hydraulic braking force based upon the basic hydraulic pressure to the
compensation braking force comprised of a pressurizing hydraulic braking force that is a hydraulic braking force based upon
at least an amount of pressurization; and
the target braking force determining means including hunting reducing hydraulic pressure calculating means for calculating
a controlling value corresponding to a hunting reducing hydraulic pressure, the controlling value obtained by applying process
to the basic hydraulic pressure in order to control a variation thereof, and the target value corresponding to the target
braking force is determined by use of the controlling value corresponding to the hunting reducing hydraulic pressure.
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