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Method for setting a parking brake in a vehicle

A parking brake and controller technology, applied in the direction of brake, brake type, axial brake, etc., can solve problems such as clamping force error value, current drop, brake motor voltage disturbance, etc.

Active Publication Date: 2015-08-26
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If a further load is switched on after starting the brake motor, this can cause voltage disturbances and current drops in the brake motor, which in turn can lead to incorrect values ​​for the clamping force to be ascertained

Method used

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  • Method for setting a parking brake in a vehicle
  • Method for setting a parking brake in a vehicle
  • Method for setting a parking brake in a vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] exist figure 1 shows an electromechanical parking brake 1 for immobilizing the vehicle in a stationary state. The parking brake 1 comprises a brake caliper 2 with a caliper 9 which engages a brake disc 10 . As an actuator, the parking brake 1 has an electric motor serving as a brake motor 3 , which drives a spindle 4 in rotation, on which a spindle nut configured as a spindle nut is rotatably supported. The spindle member 5. As the main shaft 4 rotates, the main shaft member 5 is adjusted in the axial direction. The spindle member 5 moves inside a brake piston 6 which is the seat of a brake lining 7 which is guided by the brake piston 6 towards the brake disc. 10 squeezes. On the opposite side of the brake disk 10 there is a further brake lining 8 which is fixedly held on the clamp 9 .

[0026] Inside the brake piston 6, the spindle member 5 can move axially forwards in the direction of the brake disc 10 during a rotational movement of the spindle 4, or vice versa....

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PUM

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Abstract

A method for setting a parking brake includes determining a standard deviation from a current curve of an electric brake motor. The current curve is based on measured current valued. The method further includes determining an electromechanical clamping force. The electromechanical clamping force can be determined based on a correcting current or the current values of the brake motor. The correcting current is determined if the standard deviation exceeds a limit value and motor parameters of the brake motor being determined using the correcting current. The parking brake includes an electromechanical braking mechanism having the electric brake motor configured to generate an electromechanical clamping force.

Description

technical field [0001] The invention relates to a method for adjusting a parking brake in a vehicle according to the preamble of claim 1 . Background technique [0002] DE 10 2006 052 810 A1 describes a method for estimating the clamping force generated by a brake motor in a parking brake of a motor vehicle. The brake motor moves a brake piston axially towards the brake disc, wherein the brake piston is the seat of the brake lining. The clamping force generated here is determined from a system of differential equations describing the electrical and mechanical properties of the brake motor, taking into account the current, the supply voltage of the brake motor and the speed of the motor. characteristic. [0003] Like a series of other electrical loads, the brake motor is supplied with current in the motor vehicle via the on-board electrical system. If a further load is switched on after starting the brake motor, this can cause voltage disturbances and current drops in the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T13/74G01L5/22
CPCB60T8/171B60T8/172B60T13/741G01L5/22B60T13/588B60T13/662F16D55/226F16D65/18F16D2121/04F16D2121/14
Inventor U.苏泽克
Owner ROBERT BOSCH GMBH
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