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Method and device for determining the absolute position of a component of an actuator rotating about a rotational axis, in particular a clutch actuator

A technology of rotating components and absolute positions, applied in clutches, using electro/magnetic devices to transmit sensing components, measuring devices, etc., can solve problems such as low sampling rate, missing rotor rotation, high current consumption, etc.

Active Publication Date: 2020-01-03
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Very high current consumption is required if the sampling rate of the multiturn sensor is too high
Rotor rotations will be missed if the sampling rate is too low

Method used

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  • Method and device for determining the absolute position of a component of an actuator rotating about a rotational axis, in particular a clutch actuator
  • Method and device for determining the absolute position of a component of an actuator rotating about a rotational axis, in particular a clutch actuator
  • Method and device for determining the absolute position of a component of an actuator rotating about a rotational axis, in particular a clutch actuator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] exist figure 1 A clutch operating system 1 for an automatic clutch is shown in simplified form in . The clutch operating system 1 is associated with a friction clutch 2 in the drive train of a motor vehicle and comprises a master cylinder 3 which is connected to a slave cylinder 5 via a hydraulic line 4 , referred to as a pressure line. In the slave cylinder 5 , a slave piston 6 is movable to and fro, which actuates the friction clutch 2 via an actuating element 7 interposed with a bearing 8 .

[0025] The master cylinder 3 can be connected to the compensating container 9 via a connection port. The master piston 10 is mounted axially movable in the master cylinder 3 . The piston rod 11 of the master cylinder 3 is coupled via a threaded rod 12 to an electromechanical actuating drive 13 . The electromotor actuating drive 13 includes an electric motor 14 designed as a commutation motor and a controller 15 . The screw 12 converts the rotary motion of the electric motor ...

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PUM

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Abstract

The invention relates to a method for determining the absolute position of a component of an actuator rotating about a rotational axis, in particular a clutch actuator, wherein a co-rotating magneticelement (18) is arranged on the component (14), and the absolute position of the magnetic element (18) is detected by means of a multi-turn sensor (16) located opposite the magnetic element (18), which multi-turn sensor sensor (16) is supplied with a voltage. In a method in which a particularly robust and simple multi-turn sensor can be used, a Wiegand wire unit (19) monitors movement of a magnetic assembly (18, 22) of the rotating component (14) and generates energy when movement is detected from the magnetic field of the magnetic assembly (18, 22) of the rotating component (14) and convertsthis into electrical voltage, which is provided to supply the multi-turn sensor (16) with voltage.

Description

technical field [0001] The invention relates to a method for determining the absolute position of a component of an actuator, in particular a clutch actuator, which rotates about an axis of rotation, wherein a co-rotating magnetic element is arranged on the component and the absolute position of the magnetic element is determined by means of a The opposite multiturn sensor of the magnetic element determines that the multiturn sensor is supplied with voltage. Background technique [0002] In a clutch operating system of a motor vehicle, in particular an electrohydraulic clutch operating system, the piston of the master cylinder is driven by a reversing electric motor which is actuated by a controller. The piston of the master cylinder, based on its position, sends hydraulic fluid through the hydraulic line to the slave cylinder, which also has a piston, whose movement is regulated by the hydraulic fluid, thereby exerting force on the clutch and thus causing the clutch to chan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D48/06G01D5/14
CPCF16D48/064G01D5/145F16D2500/1022F16D2500/3028F16D2500/7041F16D2500/5012
Inventor 马库斯·迪特里希
Owner SCHAEFFLER TECH AG & CO KG