Noncontact fiber-optic sensor and associated electronic equipment measure twist and speed of rotation of shaft. Measurements determine torque and power. Response of sensor remains linear even at cryogenic temperatures. Reflective strips on rotating shaft reflect two series of light pulses back into optical system. Bidirectional coupler in each of two optical fiber paths separates reflected light from incident light, sending it to photodiode for output to analog-to-digital converter and computer. Sensor requires no slip rings or telemetry to transfer signals from shaft. Well suited for providing data on performances of turbopumps for such cryogenic fluids as liquid oxygen and liquid hydrogen.
Noncontact Measurement Of Shaft Speed, Torque, And Power
NASA Tech Briefs ; 17 , 1
1993-01-01
Sonstige
Keine Angabe
Englisch
ROTATING BODY NONCONTACT POWER FEEDING DEVICE AND TORQUE SENSOR
Europäisches Patentamt | 2018
|Noncontact Miniature Torque Sensor for Automotive Application
SAE Technical Papers | 1982
|Noncontact miniature torque sensor for automotive application
Kraftfahrwesen | 1982
|On-line cylinder diagnostics on combustion engines by noncontact torque and speed measurements
Kraftfahrwesen | 1989
|On-Line Cylinder Diagnostics on Combustion Engines by Noncontact Torque and Speed Measurements
SAE Technical Papers | 1989
|