JPH0344616U

JPH0344616U -

Info

Publication number: JPH0344616U
Application number: JP10509589U
Authority: JP
Priority date: 1989-09-07
Filing date: 1989-09-07
Publication date: 1991-04-25

Description

[Brief explanation of drawings]

第１図は本考案の一実施例を示す概略構成図、
第２図は本実施例におけるコントローラの構成を
示すブロツク図、第３図はコントローラ内の駆動
回路の一例を示す回路図、第４図は軸の変位に伴
う軸とヨークとの位置関係を示す図であり、同図
ａは軸が最も図中左方に変位した場合、同図ｂは
軸が中立位置にある場合、同図ｃは軸が最も図中
右方に変位した場合を示す。第５図は、軸の変位
と検出値との関係を示すグラフである。１……変位センサ、２……軸（第１の部材）、
３ａ，３ｂ……ヨーク（磁路部材）、４……ハウ
ジング（第２の部材、固定部材）、５……ホール
素子（磁束検出素子）、６……コントローラ、６
ａ，６ｂ……制御回路、６ｃ，６ｅ……増幅回路
、６ｄ……駆動回路、７ａ，７ｂ……コイル（電
磁石）、８……温度センサ（温度検出手段）、１
０ａ，１０ｂ……隙間（可変磁気抵抗）、Ｍ_１…
…第１のリング状の磁石、Ｍ_２……第２のリング
状の磁石。 FIG. 1 is a schematic configuration diagram showing an embodiment of the present invention;
Fig. 2 is a block diagram showing the configuration of the controller in this embodiment, Fig. 3 is a circuit diagram showing an example of the drive circuit in the controller, and Fig. 4 shows the positional relationship between the shaft and the yoke as the shaft is displaced. FIG. 3A shows the case where the shaft is displaced the most to the left in the figure, FIG. 2B shows the case when the shaft is in the neutral position, and FIG. FIG. 5 is a graph showing the relationship between shaft displacement and detected values. 1... Displacement sensor, 2... Shaft (first member),
3a, 3b... Yoke (magnetic path member), 4... Housing (second member, fixed member), 5... Hall element (magnetic flux detection element), 6... Controller, 6
a, 6b...Control circuit, 6c, 6e...Amplification circuit, 6d...Drive circuit, 7a, 7b...Coil (electromagnet), 8...Temperature sensor (temperature detection means), 1
0a, 10b...Gap (variable magnetic resistance), _M1 ...
...First ring-shaped magnet, _M2 ...Second ring-shaped magnet.

Claims

[Claims for Utility Model Registration] (1) A magnetic flux that constitutes a variable magnetic resistance that changes according to the relative displacement between the first and second members, and that detects the magnetic flux that passes through a magnetic circuit that includes the variable magnetic resistance. A displacement sensor having a detection element and detecting a relative displacement between the first and second members based on a detection value of the magnetic flux detection element, comprising: temperature detection means for detecting the temperature of the magnetic flux detection element; A displacement device comprising: an electromagnet disposed in a magnetic circuit; and current control means for controlling the current supplied to the magnetic flux detection element and the electromagnet based on the detection result of the temperature detection means. sensor. (2) A displacement sensor that detects the axial displacement of a shaft that rotates and moves in the axial direction, in which first and second ring-shaped magnets having opposite polarity in the radial direction are spaced apart in the axial direction. a magnetic path member that is fitted externally on the shaft, and has one end facing the outer peripheral surface of the first ring-shaped magnet and the other end facing the outer peripheral surface of the second ring-shaped magnet; , an electromagnet in series with the magnetic path member and a magnetic flux detection element for detecting magnetic flux passing through the magnetic path member are provided on a fixed member that is relatively displaced with respect to the axis; A displacement sensor comprising: temperature detection means for detecting temperature; and current control means for controlling current supplied to the magnetic flux detection element and the electromagnet based on the detection result of the temperature detection means.