KR20050093025A - A torque sensor using transformer type position sensor - Google Patents
A torque sensor using transformer type position sensor Download PDFInfo
- Publication number
- KR20050093025A KR20050093025A KR1020040018236A KR20040018236A KR20050093025A KR 20050093025 A KR20050093025 A KR 20050093025A KR 1020040018236 A KR1020040018236 A KR 1020040018236A KR 20040018236 A KR20040018236 A KR 20040018236A KR 20050093025 A KR20050093025 A KR 20050093025A
- Authority
- KR
- South Korea
- Prior art keywords
- torsion bar
- linear displacement
- sensor
- displacement
- torque sensor
- Prior art date
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/02—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using mechanical means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/02—Rotary-transmission dynamometers
- G01L3/04—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft
- G01L3/10—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
Abstract
본 발명은 자기유도형 위치센서를 이용한 토크센서에 관한 것으로, 상세하게는 토션바의 회전변위를 선형변위체의 선형변위로 변환시켜 상기 선형변위체의 변위량을 토크량으로 환산하는 자기유도형 위치센서를 이용한 토크센서에 관한 것이다.The present invention relates to a torque sensor using a magnetic induction position sensor, and more particularly, a magnetic induction position converting a rotational displacement of a torsion bar into a linear displacement of a linear displacement body and converting the displacement amount of the linear displacement into a torque amount. It relates to a torque sensor using the sensor.
본 발명에 따르면, 회전변위를 검출하는 토션바와, 상기 토션바의 외부에 삽입되어 토션바의 회전변위를 직선변위로 변환하는 선형변위체로 구성된 자기유도형 위치센서를 이용한 토크센서가 제공된다.According to the present invention, there is provided a torque sensor using a magnetic inductive position sensor composed of a torsion bar for detecting a rotational displacement and a linear displacement body inserted into the outside of the torsion bar to convert the rotational displacement of the torsion bar into a linear displacement.
Description
본 발명은 자기유도형 위치센서를 이용한 토크센서에 관한 것으로, 상세하게는 토션바의 회전변위를 선형변위체의 선형변위로 변환시켜 상기 선형변위체의 변위량을 토크량으로 환산하는 자기유도형 위치센서를 이용한 토크센서에 관한 것이다.The present invention relates to a torque sensor using a magnetic induction position sensor, and more particularly, a magnetic induction position converting a rotational displacement of a torsion bar into a linear displacement of a linear displacement body and converting the displacement amount of the linear displacement into a torque amount. It relates to a torque sensor using the sensor.
자기유도형 정밀위치센서를 이용한 토크센서는 일반적으로 내부에 스트레인 게이지 등의 변위 센서를 부착하여 토션바의 변위를 측정하고 변위를 상대 토크로 계산하여 회전축에 작용하는 토크를 얻는다. 무한히 회전하는 토크센서는 내부의 스트레인 게이지 전원과 신호출력을 위한 전선을 필요로 한다. 이 때문에 토크센서 내부에 회전하면서 신호를 전달하기 위한 접촉식의 슬립링을 사용하여 전기신호를 전달한다. 그러나 슬립링으로 인한 마찰로 전기적 손실과 함께 외부적인 잡음에도 불안정해지고 스트레인 게이지는 출력신호가 mV단위로 매우 작아 증폭기 등의 외부적인 회로와 함께 노이즈 방지회로를 필요로 하는 단점이 있다. A torque sensor using a magnetic induction type precision position sensor generally attaches a displacement sensor such as a strain gauge to measure the displacement of the torsion bar, and calculates the displacement as a relative torque to obtain a torque acting on the rotating shaft. Infinitely rotating torque sensors require an internal strain gauge power supply and wires for signal output. For this reason, electric signals are transmitted using a slip ring of a contact type for transmitting signals while rotating inside the torque sensor. However, due to friction due to slip ring, it is unstable to external noise along with electrical loss, and strain gage has an output signal that is very small in mV and requires noise prevention circuit along with external circuit such as amplifier.
본 발명의 목적은 상기와 같은 종래의 문제점을 해결하고자 하는 것으로, 외부 잡음에 대한 강인성을 가지도록 기존 토크센서의 개념과는 다른 기구적 메카니즘을 이용하여 회전변위를 선형변위로 변환시켜 토크를 측정하는 자기유도형 위치센서를 이용한 토크센서를 제공함에 있다. An object of the present invention is to solve the conventional problems as described above, by measuring the torque by converting the rotational displacement into a linear displacement using a mechanical mechanism different from the concept of the conventional torque sensor to have robustness against external noise. The present invention provides a torque sensor using a magnetic induction type position sensor.
이하 본 발명의 구성 및 작용을 첨부 도면에 의거 상세히 설명하면 다음과 같다.Hereinafter, the configuration and operation of the present invention will be described in detail with reference to the accompanying drawings.
본 발명에 의한 토크센서(100)는 도 1에 도시된 바와 같이 비틀림의 정도의 회전변위를 검출하는 토션바(1)와, 상기 토션바(1)의 외부에 삽입되어 토션바(1)의 회전변위를 직선변위로 변환하는 선형변위체(2)로 구성된다.Torque sensor 100 according to the present invention is a torsion bar (1) for detecting the rotational displacement of the degree of torsion as shown in Figure 1, and is inserted into the outside of the torsion bar (1) of the torsion bar (1) It consists of a linear displacement body (2) which converts rotational displacement into linear displacement.
여기서 상기의 토션바(1)와 선형변위체(2)는 서로 결합되는 구조를 가지는데, 선형변위체(2)에는 경사홀(3)과 가이드홀(4)이 뚫려 있고, 경사홀(3)은 선형변위체(2)의 중심축에 대하여 일정 각도 경사진 형상이고, 가이드홀(4)은 선형변위체(2)의 중심축과 나란하게 뚫려 있다. 그리고 외주면에는 동으로 도금된 동도금띠(5)가 등간격으로 다수개 형성되어 있다.Wherein the torsion bar (1) and the linear displacement member (2) has a structure coupled to each other, the linear displacement member (2) is inclined hole (3) and guide hole (4) is drilled, the inclined hole (3) ) Is a shape inclined at an angle with respect to the central axis of the linear displacement body 2, the guide hole 4 is drilled in parallel with the central axis of the linear displacement body (2). Further, on the outer circumferential surface, a plurality of copper plated strips 5 are formed at equal intervals.
또한 토션바(1)에는 상기의 경사홀(3)과 가이드홀(4)에 각각 삽입되어 유동되게 체결되는 돌기(6)가 형성되어 있다.In addition, the torsion bar 1 is formed with protrusions 6 which are inserted into the inclined holes 3 and the guide holes 4 and fastened to flow.
도 2는 토션바(1)의 회전변위를 기구적 메커니즘을 통하여 선형변위로 변환하고, 이를 전압신호로 유도되는 구조인 본 발명의 내부구조도가 도시되어 있다.FIG. 2 is a diagram illustrating the internal structure of the present invention, which is a structure in which the rotational displacement of the torsion bar 1 is converted into a linear displacement through a mechanical mechanism and is induced by a voltage signal.
이와 같이 본 발명은 토션바(1)의 회전으로 돌기(6)가 회전되고, 돌기(6)는 선형변위체(2)의 경사홀(3)의 벽면을 밀어 선형변위체(2)를 직선으로 이송시키게 된다. 선형변위체(2)는 동도금띠(5)에 의해 자기유도를 일으켜 그 이송량을 계측할 수 있게 된다.As described above, in the present invention, the projection 6 is rotated by the rotation of the torsion bar 1, and the projection 6 pushes the wall surface of the inclined hole 3 of the linear displacement body 2 to straighten the linear displacement body 2. Will be transferred. The linear displacement body 2 causes magnetic induction by the copper plating strip 5, so that the amount of transfer can be measured.
따라서 본 발명은 기존의 토크센서의 개념과는 달리 기구적 메커니즘을 이용하여 회전 변위를 선형 변위로 변환하여 측정함으로써 외부 잡음에 대해 강인성을 가지게 된다.Therefore, the present invention has a robustness against external noise by measuring the rotational displacement by converting the rotational displacement into a linear displacement using a mechanical mechanism, unlike the conventional torque sensor concept.
그리고 본 발명은 유도형 선형변위 센서를 이용하므로 강인성과 함께 높은 전압의 출력신호를 보장 받고, 응답성과 정밀도를 손쉽게 조정할 수 있어, 다양한 형태로의 활용이 가능하다. In addition, since the present invention uses an inductive linear displacement sensor, it is possible to guarantee a high voltage output signal with robustness, and to easily adjust the responsiveness and precision, thereby enabling use in various forms.
이와 같이 본 발명은 기구적 메카니즘을 이용하여 회전변위를 선형변위로 변환시켜 토크를 측정함으로써, 외부 잡음에 대한 강인성을 가지는 효과가 있고, 완전 비 접촉식으로 토크신호를 전달하므로 기존의 시스템들이 가지는 접속상의 문제나 노이즈에 매우 강인하며, 토크센서(100)의 출력을 높은 전압 형태로 안정적으로 보장 받을 수 있다.As described above, the present invention has the effect of having robustness against external noise by converting the rotational displacement into a linear displacement using a mechanical mechanism, and having a robustness against external noise, and transmitting the torque signal in a completely non-contact manner, so that existing systems have It is very robust to connection problems and noise, and the output of the torque sensor 100 can be stably ensured in a high voltage form.
도 1은 본 발명의 개략적인 사시도1 is a schematic perspective view of the present invention
도 2는 본 발명의 내부 구조도2 is an internal structure diagram of the present invention
※ 도면의 주요 부분에 대한 부호의 설명※ Explanation of codes for main parts of drawing
1 : 토션바 2 : 선형변위체1: torsion bar 2: linear displacement
3 : 경사홀 4 : 가이드홀3: inclined hole 4: guide hole
5 : 동도금띠 6 : 돌기5: copper plating strip 6: protrusion
100 : 토크센서 100: torque sensor
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020040018236A KR20050093025A (en) | 2004-03-18 | 2004-03-18 | A torque sensor using transformer type position sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020040018236A KR20050093025A (en) | 2004-03-18 | 2004-03-18 | A torque sensor using transformer type position sensor |
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| Publication Number | Publication Date |
|---|---|
| KR20050093025A true KR20050093025A (en) | 2005-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| KR1020040018236A KR20050093025A (en) | 2004-03-18 | 2004-03-18 | A torque sensor using transformer type position sensor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10983019B2 (en) | 2019-01-10 | 2021-04-20 | Ka Group Ag | Magnetoelastic type torque sensor with temperature dependent error compensation |
| US11486776B2 (en) | 2016-12-12 | 2022-11-01 | Kongsberg Inc. | Dual-band magnetoelastic torque sensor |
| US11821763B2 (en) | 2016-05-17 | 2023-11-21 | Kongsberg Inc. | System, method and object for high accuracy magnetic position sensing |
-
2004
- 2004-03-18 KR KR1020040018236A patent/KR20050093025A/en not_active Application Discontinuation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11821763B2 (en) | 2016-05-17 | 2023-11-21 | Kongsberg Inc. | System, method and object for high accuracy magnetic position sensing |
| US11486776B2 (en) | 2016-12-12 | 2022-11-01 | Kongsberg Inc. | Dual-band magnetoelastic torque sensor |
| US10983019B2 (en) | 2019-01-10 | 2021-04-20 | Ka Group Ag | Magnetoelastic type torque sensor with temperature dependent error compensation |
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