JPS55104732A - Shaft torque detector for rotary machine - Google Patents
Shaft torque detector for rotary machineInfo
- Publication number
- JPS55104732A JPS55104732A JP1195279A JP1195279A JPS55104732A JP S55104732 A JPS55104732 A JP S55104732A JP 1195279 A JP1195279 A JP 1195279A JP 1195279 A JP1195279 A JP 1195279A JP S55104732 A JPS55104732 A JP S55104732A
- Authority
- JP
- Japan
- Prior art keywords
- rotary shaft
- hole
- rod
- central axis
- rotary machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
PURPOSE: To measure torsional torque by a method wherein a through hole is made in a rotary shaft, a rod fixed on the rotary shaft at one end along a central axis of the hole is provided and mechanical displacement in proportion to the torsional torque is replaced by an electric signal and detected.
CONSTITUTION: A through hole is made in a rotary shaft and a rod fixed on the rotary shaft at one end along a central axis of the hole is provided as a movable electrode Ev. Fixed electrodes Ef1, Ef2 are provided on the rotary shaft near the free end of the rod so that a pair of variable capcitors C1, C2 are constructed. If relative rotational displacement between the rod and the rotary shaft occurs, capacitances of the pair of capacitors increases and decreases. Crystal resonators Xtal1, Xtal2 and oscillators OSC1, OSC2 are connected to each capacitors C1, C2 whose outputs are given to a mixer MIX, and a differential frequency signal Fd is taken out from the output terminal. Thus, the torque in the shaft of a rotary machine can be detected.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1195279A JPS55104732A (en) | 1979-02-05 | 1979-02-05 | Shaft torque detector for rotary machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1195279A JPS55104732A (en) | 1979-02-05 | 1979-02-05 | Shaft torque detector for rotary machine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55104732A true JPS55104732A (en) | 1980-08-11 |
Family
ID=11791953
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1195279A Pending JPS55104732A (en) | 1979-02-05 | 1979-02-05 | Shaft torque detector for rotary machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55104732A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5886518U (en) * | 1981-12-08 | 1983-06-11 | 日立建機株式会社 | Capacitive displacement detection installation |
-
1979
- 1979-02-05 JP JP1195279A patent/JPS55104732A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5886518U (en) * | 1981-12-08 | 1983-06-11 | 日立建機株式会社 | Capacitive displacement detection installation |
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