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Method and device for datum determination and plausibility check of actuator reference position

A technology of reference position, actuator, applied in the direction of measuring device, mechanical device, mechanical measuring device, etc., can solve the problems of difference, brake wear, readjustment, etc.

Inactive Publication Date: 2017-04-12
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This causes the measured zero to differ from the mechanical zero
If the brake is now closed, an activation of an incorrect actuator position occurs, in which case the actuator moves to a position in the braking characteristic curve that assigns the stroke to the braking torque, so that Overload torques can occur on the planetary gear and undesired readjustment of the wear readjustment of the brakes can occur

Method used

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  • Method and device for datum determination and plausibility check of actuator reference position
  • Method and device for datum determination and plausibility check of actuator reference position

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Embodiment Construction

[0017] with the already described above figure 1 The difference is that figure 2 The force variation of the force F over the actuation travel x of the actuating element of an actuator is shown as a function of the plausibility check of the ascertained reference position at the stop A. FIG. For this purpose, a force threshold representing the plausibility check position P is formed for the stop A, for example in a two-stage configuration, forwardly displaced by the travel difference Δx, in that, for example, the actuating element acts with respect to the travel difference Δx A force accumulator with force F(p) is superimposed. When moving the actuating element along the actuating path x in the direction of the mechanical stop A, the actuating element first hits the front load (Vorlast) of the energy store, for example a pretensioned spring, at the plausibility check position P on the system. When moving further, the operating element is only as figure 1 Hit the mechanical ...

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Abstract

A method and device for referencing and plausibility-checking a reference position of an actuator that displaces an actuating element along an actuating path, by determining the reference position at a mechanical end stop at one end of the actuating path. In order to prevent misidentification of the reference position as a result of an actuating element jamming or the like, a reference position is only deemed to have been plausibility-checked if the power development of an energy store located upstream of the mechanical end stop along the actuating path can be associated with a predefined plausibility-checking position that is assigned to the reference position.

Description

technical field [0001] The invention relates to a method for reference determination and plausibility checking of a reference position of an actuator and a device for carrying out the method. Background technique [0002] The field of use and object of application of the invention is in the technical field of actuators with electronically commutated electric motors with incremental travel sensors. The incremental distance sensor can be used to detect the distance, knowing the relationship between the rotational speed of the electric motor and the distance traveled by the electric motor of the actuator driven by the electric motor. A corresponding clutch actuator is known from DE 10 2010 009 735 A1, in which the actuation travel of the friction clutch is detected on the basis of signals of an incremental travel sensor. In addition, so-called pulley generators are known, in which the functions of an electric motor integrated into a belt drive of a so-called pulley generator a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D23/12G01B5/00
CPCG01B5/00
Inventor A·德雷埃尔L·梅恩L·霍尔策
Owner SCHAEFFLER TECH AG & CO KG