Electropneumatic converter with low hysteresis

A converter, electro-dynamic technology, applied in the direction of magnetic objects, electrical components, circuits, etc., can solve the problem that the electric-electric converter is difficult to adjust precisely, and achieve the effect of low hysteresis characteristics

Active Publication Date: 2016-06-01
ROTORK YTC LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to this large hysteresis, electro-pneumatic converters are difficult to fine-tune

Method used

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  • Electropneumatic converter with low hysteresis
  • Electropneumatic converter with low hysteresis
  • Electropneumatic converter with low hysteresis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] Figure 3a and 3b An electropneumatic converter 100 according to an embodiment of the invention is shown. Figure 3a showing the closed magnetic circuit formed by the magnetic field generated by the coil, Figure 3b Shows a closed magnetic circuit formed by a magnetic field generated by a permanent magnet.

[0025] The electro-pneumatic converter 100 according to this embodiment includes a first stator 110 , a first stator gap 112 , a coil 114 , a second stator 120 , a second stator gap 122 , a permanent magnet 124 and a moving part 130 .

[0026] A first stator gap 112 is formed at one end of the first stator 110 , and a coil 114 is wound around a part thereof. The first stator 110 is made of a material with low saturation magnetic flux density and low coercive force. For example, the first stator 110 may be made of PC (permalloy with a nickel content of 78%). Additionally, the first stator 110 may be made of a single or multiple materials.

[0027] One end of th...

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PUM

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Abstract

The present invention provides an electropneumatic converter with low hysteresis characteristics. The electropneumatic converter includes a first stator, a second stator having a curved plate shape, and a movable member. The first stator has a first stator gap and a coil wound around a portion of the first stator. One end of the second stator has a second stator gap, and the other end of the second stator is attached with a permanent magnet for magnetizing the moving part. The first stator gap and the second stator gap are arranged next to each other. One end of the moving part is adjacent to the permanent magnet, and the other end of the moving part extends through the first stator gap and the second stator gap. The traveling member is provided to swim in the first stator gap and the second stator gap according to the current applied to the coil.

Description

technical field [0001] The invention relates to an electro-pneumatic converter for a pneumatic position controller, in particular to an electro-pneumatic converter with low hysteresis characteristics. Background technique [0002] The electro-pneumatic converter is a device that converts electric current into mechanical rotational force, and finally into air pressure. [0003] Figure 1a and 1b The structure and operating principle of a conventional electropneumatic converter are shown. Such as Figure 1a As shown, the magnetic field generated by the current flowing in the coil 4 forms a closed magnetic circuit through the moving piece 1 and the stator 5 . Such as Figure 1b As shown, the magnetic field generated by the magnet 3 forms a closed magnetic circuit through the stator 5 . Due to the interaction between the magnetic field generated by the coil 4 and the magnetic field generated by the magnet 3 , a force to rotate around the hinge 2 is generated in the movable m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K16/04
CPCH01F7/145F15B5/00G01D5/42
Inventor 李镛熙
Owner ROTORK YTC LTD
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