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Electric Brake

A technology of electric braking and electric motor, applied in the direction of braking transmission device, braking action starting device, brake, etc., can solve problems such as controllability deterioration, and achieve the effect of improving controllability and accuracy

Active Publication Date: 2017-07-07
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the torque (resultant torque) in a certain direction is amplified and the sensor mounting advance angle of the mounting position of the above-mentioned angle sensor is excessively set, there is a problem that the controllability in the opposite direction of rotation deteriorates.

Method used

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  • Electric Brake
  • Electric Brake
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Examples

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Embodiment approach

[0073] figure 1 It is a figure which shows the arrangement|positioning structure of the electric brake apparatus which concerns on one Embodiment of this invention in a vehicle. exist figure 1 The directions of the front, rear, left, and right of the vehicle V are indicated by arrows. The electric brake device 10 is provided to be mountable on various vehicles including, for example, an automobile driven only by an engine (internal combustion engine), a hybrid automobile, an electric automobile, a fuel cell automobile, and the like.

[0074]The electric brake device 10 provided with the vehicle stability assist device 18 (hereinafter referred to as the VSA device 18, VSA is a registered trademark) of the present embodiment includes a By Wire brake system and a conventional hydraulic brake system. The system is composed of two parts. The brake system of the wire control type is used for normal use and transmits electric signals to activate the brakes. The hydraulic brake syst...

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Abstract

An electric brake device includes: a motor cylinder device that generates a hydraulic pressure in accordance with a brake operation of a driver with an electric motor; a rotational angle sensor that detects a rotor rotational angle θ of the electric motor; and a motor control section that controls an output torque of the electric motor corresponding to the rotor rotational angle θ and controls the electric motor by advancing a detection value of the rotational angle sensor. The current phase setup section sets a current phase to an advanced side as an electrical advance control. The current phase setup section inhibits the advancing the detection value when the electric motor performs reversed rotation, or sets the current phase to a retarded side.

Description

technical field [0001] The present invention relates to an electric brake device that can be applied to a brake system of a drive-by-wire type. Background technique [0002] A By Wire electric brake system calculates a target brake pressure using driver input such as a pedal stroke amount, and generates hydraulic pressure through various actuators to achieve the target hydraulic pressure. [0003] In an electric brake system, an electric motor is used as an actuator that generates brake fluid pressure. As such an electric motor, an IPM (Interior Permanent Magnet) motor is used in which a permanent magnet is arranged on a rotor and a coil is driven by an inverter (for example, refer to Patent Document 1). The IPM motor can obtain the reluctance torque generated by the change of the reluctance of the gap between the stator and the rotor in addition to the magnetic torque (magnet torque) caused by the attractive / repulsive force between the coil and the permanent magnet. There...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T8/17B60T13/138B60T13/66H02P6/06H02P6/08H02P6/28
CPCB60T7/042B60T13/146B60T13/662B60T13/745B60T8/4081
Inventor 岛田贵史木寺和治植浦总一郎
Owner HONDA MOTOR CO LTD
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