Advanced Torque Measurement System

1973 ◽  
Author(s):  
Jee-Da Chang ◽  
Joseph Kukel
Keyword(s):  
Measurement System ◽  
Torque Measurement

scholarly journals Torque Take Off

2000 ◽  
Vol 122 (10) ◽  
pp. 58-61
Author(s):  
Paul Sharke
Keyword(s):  
Real Time ◽  
Measurement System ◽  
Automotive Applications ◽  
Torque Measurement ◽  
Mechanical Resonance ◽  
Transmission Design ◽  
Engine Power

This article focuses on that helicopters often display a rotor torque reading on their instrument panels to tell pilots how close they are flying to transmission design limits. With no measure of torque, a limit based on engine power is necessarily conservative. Torque monitors can increase a helicopter’s time between overhauls. Mechanical resonance, it seems, developed when the two engines were operated at matched torques. The torque meter lets the pilot split the torque to the two engines by 2 percent, diminishing any resonance. Permitted speculation, the Siemens researchers observed applications for their instrument beyond the traditional realm of torque measurement. In automotive applications, for instance, the researchers envision their torque measurement system one day being used in car engines to provide data in real time to the engine controls.

Development of Contactless Torque Sensor Based on SAW Resonators

2019 ◽  
Author(s):  
Wei Han ◽  
Xiongzhu Bu ◽  
Yihan Cao ◽  
Miaomiao Xu
Keyword(s):  
Measurement System ◽  
High Reliability ◽  
Transmission System ◽  
Torque Sensor ◽  
Torque Measurement ◽  
Sensing Element ◽  
Differential Measurement ◽  
Saw Devices ◽  
Calibration Experiment ◽  
Saw Resonators

Abstract This paper presents a wireless clamp-on torque sensor based on dual or quad one-port SAW resonators to meet the measurement requirements of transmission system. Firstly, the principle of clamp-on torque sensor is introduced, the mechanical model of the structure is calculated and simulated by theoretical analysis and COMSOL. The differential measurement method is confirmed, and the optimal structure parameters are studied. Then, the torque sensitive theory of SAW devices is analyzed, the differential SAW torque sensing elements and the measurement system are designed based on the frequency division multiple access (FDMA). And a novel sensing element installation method is proposed, which reduces the installation error influence on sensor accuracy. Finally, the clamp-on structure prototype and measurement system are verified by the static calibration experiment. The results show that: the torque sensor has the capability that 1.931 KHz/Nm of sensitivity under ±100 Nm with good linearity and consistency. The torque sensor has the advantages of wireless, non-contact, easy installation, high reliability, and easy maintenance, it is suitable for the torque measurement of transmission system.

A New High Speed Frequency Conversion Grating Torque Measurement System

2011 ◽  
Vol 105-107 ◽  
pp. 1885-1888
Author(s):  
Hao Zhao ◽  
Hao Feng
Keyword(s):  
Measurement System ◽  
High Speed ◽  
Frequency Conversion ◽  
Good Accuracy ◽  
Frequency Converter ◽  
Torque Sensor ◽  
Torque Measurement ◽  
Three Phase ◽  
Accuracy Of Measurement ◽  
Hardware Test

It is difficult to measure torque of high speed rotating machinery, a new mechanical structure torque sensor based on three phase asynchronous is designed, and combined with frequency conversion, a new frequency conversion Torque Measurement system is constucted. The sensor shaft and rotor are separated by bearing, for the accuracy of torque measurement, controlling frequency converter to make the speed difference of sensor shaft and rotor constant. This measurement system based on Filed Programmable Gate Array in signal processing, SCM in data processing and frequency converter controlling, and realize non-contract torque measurement. According to the results of the hardware test, indicated this measurement system is realizable. The good accuracy of measurement system is verified accord to the test, the fiducial error is .

Designation of a Grating Torque Measurement Device Based on FPGA and MCU

2013 ◽  
Vol 422 ◽  
pp. 136-140
Author(s):  
Hao Zhao
Keyword(s):  
Measurement System ◽  
Twist Angle ◽  
Mechanical Transmission ◽  
Torque Measurement ◽  
Square Wave ◽  
Wave Signal ◽  
Control Optimization ◽  
High Measurement ◽  
Field Programmable ◽  
Relationship Of

For the mechanical transmission system, the torque measurement of rotating machinery has important significance to the research and development of products test、to analysis the quality inspection safety and to the control optimization. For the complex composition of the present torque measurement, this paper puts forward a simple structure torque measurement system, and it has high measurement precision. First, the grating photoelectric output signals are converted into square wave signal, then system measurement method is accepted through the relationship of the two square wave signal phase, which has corresponding relation to the twist angle of the sensor shaft. The experimental platform is constructed based on field programmable gates array (FPGA) and MCU, the non-contact torque measurement is realized through the designation of measurement system software. This method has practical value and it is expected to be used widely.

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