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Electric braking device for vehicle

一种电动制动、车辆的技术，应用在制动传动装置、制动器、车辆部件等方向，能够解决电动马达耐久性影响等问题

Active Publication Date: 2015-11-11
ADVICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, when using a brushed motor as an electric motor, the amount of current flow to the motor brushes will affect the durability of the electric motor

Method used

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  • Electric braking device for vehicle
  • Electric braking device for vehicle
  • Electric braking device for vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] Hereinafter, an electric brake device for a vehicle according to an embodiment of the present invention will be described with reference to the drawings.

[0037]

[0038] Such as figure 1 As shown, in a vehicle equipped with this electric brake device, it is equipped with: a brake operating part BP, an electronic control unit ECU, a brake unit (brake actuator) BRK, a pressing force acquisition unit (pressing force sensor) FBA, A position acquisition unit (rotation angle sensor) MKA, and a battery BAT.

[0039] A brake operating member (eg, brake pedal) BP is operated by the driver to decelerate the vehicle, and a brake unit (brake actuator) BRK adjusts the braking torque of the wheel WHL based on the above-mentioned operation amount so that The wheels WHL generate braking force.

[0040] Brake operation amount acquisition means BPA is provided on brake operation member BP. The operation amount (brake operation amount) Bpa by which the brake operation member BP is...

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PUM

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Abstract

An electric braking device for a vehicle wherein: a first degree of contribution (Ka1) associated with the actual pressing force value (Fba), which is the detected value of the pressing force of a friction member, and a second degree of contribution (Ke2) associated with an estimated pressing force value (Fbe), which is the estimated value of the pressing force calculated on the basis of the position of an electric motor, are determined on the basis of the operation amount (Bpa) of a braking operation member; the second degree of contribution is determined to be larger than the first degree of contribution when the operation amount is small; the first degree of contribution is determined to be larger than the second degree of contribution when the operation amount is large; a combined pressing force (Fbx) is calculated on the basis of a value (Fbxa) obtained by accounting for the first degree of contribution in the actual pressing force value and a value (Fbxe) obtained by accounting for the second degree of contribution in the estimated pressing force value; and a target power supply amount for the electric motor is calculated on the basis of the combined pressing force and a target pressing force (Fbt), which is calculated from the operation amount.

Description

technical field [0001] The invention relates to an electric brake device for a vehicle. Background technique [0002] Patent Document 1 discloses an electric brake device capable of correcting a zero-point shift (drift) of a pressing force detection unit that detects a pressing force that presses a friction member against a rotating member to improve the accuracy of feedback control of the pressing force. [0003] Patent Document 2 discloses an electric brake device that includes a pressing force detection unit that detects a pressing force and a position detection unit that detects a displacement of a thrust mechanism. The relative relationship between the signals is used to detect the abnormality of the pressing force detection unit. Specifically, a technique is described in which abnormality detection processing of the piston thrust sensor is performed based on the relationship between the motor position and the piston thrust sensor, wherein the motor position is determi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T8/174B60T13/74B60T17/22
CPCB60T17/22B60T13/741B60T8/171
Inventor 安井由行儿玉博之大盐优介
Owner ADVICS CO LTD