Method for determining the position of a positioning element of an electrically-operated actuator, corresponding circuit arrangement and device

A technology for positioning components and actuators, applied in electrical components, circuits, transportation and packaging, etc., can solve problems affecting output signals, achieve low cost, continuous and reliable operation, and achieve the effect of over-temperature protection
CN1286128CInactive Publication Date: 2006-11-22HYDAC ELECTRONICS GMBH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HYDAC ELECTRONICS GMBH
Publication Date
2006-11-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention relates to a method of determining the positioning element position (x) of an electrically actuator, the actuator by means of a controlled switch (18) reaches the lower threshold of the threshold (i 1 ) when the threshold value is opened and the upper limit of the threshold value (i 2 ) is turned off, where according to the lower threshold of the threshold (i 1 ), upper threshold value (i 2 ) and according to the actuator electrical switching performance of the positioning element position (x), an ongoing duration period (t ein ) and a shutdown duration (t aus ), and locate the component position (x) by comparing the opening duration (t ein ) or shutdown duration (t aus and the opening duration (t ein ) and the shutdown duration (t aus ) of ( t ein +t aus ) and the opening duration (t ein ) and the shutdown duration (t aus ) of ( t ein +t aus Compared with the corresponding reference data stored to detect, the present invention further relates to a corresponding circuit (24) and a corresponding apparatus (12) for implementing this method, in particular a hydraulic valve 42.
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Description

technical field

[0001] The invention relates to a method for detecting the position of a positioning element of an electrically drivable actuator, as well as corresponding circuits and devices, in particular a hydraulic valve. Background technique

[0002] Typical fields of application of this method are, for example, solenoid-operated valves or switches. The inductance of the electromagnet depends on the corresponding position of the armature. Therefore, the measurement of the inductance can detect the position of the armature in principle.

[0003] DE4341797 discloses a method and a device for controlling electromagnetic appliances, which are mainly used in the field of fuel measurement in combustion engines. By actuating the magnetic valve, the start of injection, the end of injection and the resulting injected fuel quantity are determined. In doing so, it is required to know the time at which the armature of the magnetic valve reaches its end position. This switching...

Claims

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