Research on simulation extrapolation estimation method in large-scale torque measurement scene

For the practical needs of measuring large-scale torque in high-speed engines and wind turbines, how to reasonably extrapolate and estimate torque values, and ensure the accuracy of large-scale torque measurement results, has become an urgent problem to be investigated. In this paper, the large-scale torque extrapolation estimation problem was studied by experiment and simulation. Firstly, two different types of torque transducers were placed on the torque measurement standard device, and the torque measurement points were taken and recorded at the corresponding values of 20 %, 50 % and 100 % of the full range respectively. Then, based on the changing trend of torque value and interpolation deviation in different range, the linear extrapolation estimation method was adopted, and the estimation model of large-scale torque was established. Based on the torque data in 20 % and 50 % of the full range in the experiment, the full range torque value was predicted by simulation and compared with the results in experiment. Finally, the effectiveness of the linear extrapolation estimation method was analyzed and compared, in order to provide an effective reference for the accuracy and traceability of large-scale measurement of torque transducers.