Coil arrangement having two coils

A coil and linear technology, applied in the direction of coils, coil manufacturing, instruments, etc., can solve the problems of position sensors that are not suitable for precision purposes, small measurement accuracy, etc., and achieve high accuracy and improved measurement resolution.
CN104903684AInactive Publication Date: 2015-09-09ZF FRIEDRICHSHAFEN AG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZF FRIEDRICHSHAFEN AG
Publication Date
2015-09-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a coil arrangement, in particular for a position sensor, having a first coil (1) and a second coil (2) which are electrically connected to one another and are arranged in a substantially coaxial manner with respect to one another, wherein the first coil (1) has a winding density that increases in the longitudinal direction (X) of the coil arrangement, whereas the second coil (2) has a winding density which decreases in the longitudinal direction (X) of the coil arrangement. The invention also relates to a position sensor having such a coil arrangement and to a method for producing such a coil arrangement.
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Description

technical field

[0001] The invention relates to a coil system having a first coil and a second coil which are electrically connected to one another and arranged essentially coaxially to one another, wherein the first coil has an increasing winding density in the longitudinal direction of the coil system. Furthermore, the invention also relates to a position sensor and a method for producing the coil system. Background technique

[0002] Various embodiments of contactless linear position sensors are known. The most important representation is sensing using a magnetic field. These are sensors using the Hall effect or the induction law. The latter in turn can be divided into two groups according to their principle of action. What both groups have in common is the system of coils and detection elements, which must be electrically conductive in the first group and soft magnetic in the second group.

[0003] The first group (eddy current sensors) uses induction to build up a c...

Claims

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