Development of a novel wireless transducer for measuring the transient torque of an automotive powertrain
- Publication Type:
- Conference Proceeding
- Proceedings of the 1st World Congress on Engineering Asset Management, WCEAM 2006, 2006, pp. 1056 - 1062
- Issue Date:
This paper presents the development of a specific wireless torque measurement system that is used to obtain the transient torque of automatic transmissions. Strain gauges are put on the surface of components that rotate and transfer power. The gauges are connected to a circular printed circuit board (PCB), which is mounted on the rotating component next to the strain gauges. The PCB contains an amplifier, low pass filter, A/D converter, microcontroller, digital RF transceiver and the power supply. The transmitted torque data is received by a stationary antenna and transceiver, which is interfaced to a PC to process, display and save the data. The wireless torque transducer is installed at the output shaft of a 4-speed automatic transmission powertrain test facility for capturing the transient torque under various operational conditions. A number of tests are performed on the powertrain test facility with various specified disturbances such as tip-in, tip-out, 1-2 and 2-3 gear up-shifts. The transient output torque of the automatic transmission are measured and compared with those obtained from simulations performed with the estimated same operating conditions. The two sets of transient responses correlate with each other and hence demonstrate that the torque transducer meets the major design specifications.
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