Inductive eddy current actuating element and method for producing an inductive dampening element

Abstract

The present invention relates to a method for manufacturing an inductive damping element, such as a damping element of inductive transducer, wherein the transducer can generate a coil signal changing along with moving distance or angle under the function of eddy-current damping. A conductive metal film replaces the metal piece punched by copper, aluminium or brass. In the process for manufacturing rotor or sliding block loaded with inductive damping element, metal film is released from the material coil and is impressed on a plastic carrier, and simultaneously the metal film is punched with ahot die. Then the residual part of metal film is coiled on a second material coil. The invention also introduces an inductive eddy-current actuating component which can be caused to pass through a row of pancake coils or flat coils which are adjacent closely so that the inductance of three coils can be changed through the eddy-current damping effect. The profile shape of inductive actuating component basically has a diamond shape and is characterized in that at least two edges of diamond bend inwards.

Description

technical field [0001] The invention relates to an inductive eddy current actuating element. A device of this type is disclosed, for example, in patent document EP 1 672 323 A2. Background technique [0002] Such actuating elements are displaced at a predetermined distance over a row of closely spaced flat coils, also called flat coils. This involves a relative movement, ie in principle it is possible to move either the inductive actuating element, or a row of flat coils, or both. Measurements are based on relative motion only. [0003] The device can be used as a measuring device for changing the inductance of essentially three coils in a coil row by means of eddy current damping. For example, the appendix to the specification of the patent application Figure 5 Shown is a flat coil row arranged in a straight line, and accompanying drawing 15 shows a coil row arranged in an arc. The position of the slide or rotor relative to the coil row can be determined, i.e. the trav...

AI Technical Summary

Problems solved by technology

If a relatively short rhombus is selected, only two signal values ​​will appear at some measurement points (stop points), which is not enough to form a bell curve; if a longer rhombus is selected, the bell curve will become Unnecessarily wide and will not be able to determine vertices accurately enough (too little position selectivity)

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