External torque sensor design providing wireless and real-time data customized for drivetrain

Abstract

In this study, a torque sensor design that can be used in both laboratory and field tests simulating road conditions of drivetrain of the vehicles is explained. Mechanical design of the sensor has been carried out via finite element method (FEM). Material of the torque sensor and the relevant heat treatment were determined. Electronic measurement circuit design and its setup have been carried out including amplifier, filter, ADC and data transmission features which are suited for full bridge connection. Verification and calibration tests have been performed with respect to DIN-51309. As a result of the studies, it was determined that the measurement accuracy of the system in the torque range of 250 ÷ 2500 Nm was 0.5%. The effect of noise-induced deviations was found 0.05% for the precision value. Consequently, a verified universal torque sensor has been developed for any drivetrain application under torsional effect with the given specifications. It is hoped that this sensor might become a common feature on any and every drivetrain for advanced monitoring of the drive components.

Keywords

• Torque
• driveshaft
• data acquisition
• calibration

References

1. O. Aldemir, S. Tarakçı, T. Solmaz, E. Işık, “External system design for real time monitoring of temperature and torque data on the driveshaft”, 10th International Automotive Technologies Congress Book, 769-776, 2020.
2. G. Persson, O. Persson,” Torque Sensor for Automotive Applications”, Lund University, 2015.
3. M. Hilal Muftah, S. Mohamed Haris, K. Petroczki and E. Awad Khidir, “An Improved Strain Gauge-Based Dynamic Torque Measurement Method”, International Journal of Circuits, Systems and Signal Processing, Volume 7, Issue 1, 66-73, 2013.
4. D. Danesin, C. Girardin, A. Sorniotti, A. Morgando, M. Velardocchia, “Driveline layout influence on four-wheel drive dynamics”, SAE Transactions, Section 6: Journal of passenger cars: Mechanical systems, Volume 113, 534-541, 2004.
5. C. Chen, T. Ma, H. Jin, Y. Wu, Z. Hou, F. Li, “Torque and rotational speed sensor based on resistance and capacitive grating for rotational shaft of mechanical systems”, Mechanical Systems and Signal Processing, Volume 142, 106737, 2020.
6. P. Bingham, S. Theodossiades, T. Saunders, E. Grant, R. Daubney, “A study on automotive drivetrain transient response to ‘clutch abuse’ events”, Proceeding of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, Volume 230, Issue 10, 1403-1416, 2015.
7. J. C. Schnackenberg, “Wheel load transducer”, US6439063B1, 2002.
8. N. Werner, “Recorder for measuring applied forces has a rotationally symetric body with measurement legs arranged between through holes on which strain gages are placed to measure shear forced, wgich are insensitive to load placement”, DE10055933A1, 2002.

9. M. Grandl, “Torque sensor having a sealing membrance”, CN109661566A, 2019.
10. A. Niedworok, “Dynamic Torque Measurement of Drive Transmission in Vehicles Being in Motion Using Strain Gauges Measurement Technique and Wireless Data Transmission”, 16th European Conference on Power Electronics and Applications Conference Book,1-8, 2014.
11. T. Sanponpute, C. Watthong, “Prototype of Load Cell Application in Torque Measurement”, IMEKO 2010, 285-289, 2010.
12. B. S. H. Tonin, Y. He, N. Ye, H. P. Chew, A. Fok, “Effects of tightening torque on screw stress and formation of implant-abutment microgaps: A finite element analysis”, The Journal of Prosthetic Dentistry, 2021.
13. J. Bai, X. Wu, F. Gao, H. Li, “Analysis of powertrain loading dynamic characteristics and the effects on fatigue damage”, Applied Sciences, Volume 7, Issue 10,1-15, 2017.
14. R. G. Budynas, J. K. Nisbett, “Shigley's Mechanical Engineering Design_TextBook” Mcgraw-Hill, 2011.
15. L. Mendoza and E. Yuen, “Diseño de un prototipo de máquina trituradora de botellas PET”, Peru Technology University, 2019.
16. https://www.ni.com/en-tr/innovations/white-papers/07/measuring-strain-with-strain-gages.html,13/8/21.
17. Y. Chen, “Development of highly magnetostrictive composites for applications in magnetomechanical torque sensors”, Iowa State University, 1999.
18. ISO 18265 Metallic materials Conversion of hardness values.
19. https://www.ni.com/en-tr/innovations/white-papers/07/measuring-strain-with-strain-gages.html, 1.8.21.
20. D.M. Ştefănescu, “Wheatstone Bridge - The Basic Circuit for Strain Gauge Force Transducers. In: Handbook of Force Transducers.”, Springer, 2011.
21. P. R. Nagarajan, B. George, V. J. Kumar, “A Linearizing Digitizer for Wheatstone Bridge Based Signal Conditioning of Resistive Sensors”, IEEE Sensors Journal, Volume 17, Issue 6, 1696 – 1705, 2017
22. P. Tawadros, M. Awadallah, P. Walker, N. Zhang, “A low-cost bluetooth torque sensor for vehicle jerk and transient torque measurement”, Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, Volume 234, Issue 2-3, 2020
23. D. Marioli, P. Rolla, A. Taroni, “Strain gauge transducers: an evaluation of accuracy limits”, Measurement, Volume 10, Issue 3, 98-104, 1992.
24. DIN 51309 Materials testing machines - Calibration of static torque measuring devices.