JPS6115533U

JPS6115533U - torque sensor

Info

Publication number: JPS6115533U
Application number: JP10113784U
Authority: JP
Inventors: 又一郎木曽
Original assignee: 三菱電機株式会社
Priority date: 1984-07-03
Filing date: 1984-07-03
Publication date: 1986-01-29

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図及び第２図は各々高磁歪金属を使用しだ従来のト
ルクセンザを示す構成図、第３図はトルクセンサのねじ
り歪と出力電圧比生の関係を示す特性図、第４図はこの
考案の一実施例のトルクセンサを示す構成図、第５図は
センサ感度を説明するための共振特性図、第６図及び第
７図はこの考＝他の実施例のトルクセンサを示す構成図
であ１・・・回転軸、２・・・高磁歪金属、４・・・入
カコイル、５・・・出力コイル、７・・・入力信秀、９
ａ，９ｂ・・・コンデンサ、なお、２，図中、同一符号
は同一又は相当部分を示す。Figures 1 and 2 are configuration diagrams showing conventional torque sensors using high magnetostrictive metals, Figure 3 is a characteristic diagram showing the relationship between torque sensor torsional strain and output voltage ratio, and Figure 4 is a diagram showing the relationship between torque sensor torsional strain and output voltage ratio. A configuration diagram showing a torque sensor according to one embodiment of the invention, FIG. 5 is a resonance characteristic diagram for explaining sensor sensitivity, and FIGS. 6 and 7 are configuration diagrams showing a torque sensor according to another embodiment of the invention. 1...rotating shaft, 2...high magnetostrictive metal, 4...input coil, 5...output coil, 7...input Nobuhide, 9
a, 9b...Capacitor, 2. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims

[Scope of utility model registration request]

(1) Wrapped around the surface of the rotating shaft that generates torque.
a high magnetostrictive metal having high magnetostrictive characteristics; an input coil that is wound in a non-contact manner around the high magnetostrictive metal and inputs an input signal to the high magnetostrictive metal; and an input coil that is wound in a non-contact manner around the high magnetostrictive metal;
In a device equipped with an output coil that electrically detects a change in the relative permeability of the high magnetostrictive metal due to the generation of torque on the rotating shaft, at least one of the input coil and the output coil resonates. A torque sensor characterized by forming a circuit.

(2) The torque sensor according to claim 1, which is a registered utility model, characterized in that a resonant circuit is formed by inserting a capacitor in parallel with at least one of the input coil and the output coil.

(3) Utility model registration claim No. 1, characterized in that the winding capacity of at least one of the input coil and the output coil is increased, and a resonant circuit is formed by the inductorless and stray capacitance of this coil. +Lux sensor described in item 1.

(4) G according to any one of claims 1 to 3 of the claims for silkworm patent registration, characterized in that the frequency of the input signal and the frequency of the resonant circuit are synchronized. (5) Frequency of the resonant circuit The torque sensor according to any one of claims 1 to 3, wherein the frequency is shifted from the frequency of the input signal and set close to the frequency of the input signal.