Torque transfer sensor for accurate measurement of very small torques, whereby measurements are made independent of interference forces and moments

摘要

Torque-transfer sensor has two rotating connection parts that rotate relative to each other and are connected to each other via a deformation body on which strain gauges are mounted, the signals of which are connected to a bridge measurement circuit. The deformation body is a linking spiral spring (6) whose bending axis (7) coincides with the rotation axis. Strain gauges (9) are mounted on either side of the spring axis with their measurement direction perpendicular to the rotation axis.