Manufacturing method of rotational torque measuring device for wind power plant, involves computing calibration factor from deformation element parameter describing elongation of deformation element, to compute rotational torque

摘要

The method involves calibrating pre-turning moment measuring devices with main and auxiliary deformation elements, so that deformation element parameters describing elongation of deformation elements are obtained. The sensors (18-1-18-4,18-6) are connected to deformation element, for measuring elongation of deformation element. The rotational torque measuring device (26) with deformation elements is manufactured. The calibration factor is computed from deformation element parameters. The rotational torque (Mi) is computed from sensor signal and calibration factor. An independent claim is included for rotational torque measuring device.