momentsensorer

Moment sensorer, or moment sensors, are devices designed to measure torque, the rotational effect produced by a force applied at a distance from an axis. They provide a quantitative readout of the moment around a rotational axis, which is essential for analyzing the performance of motors, drivetrains, and mechanical joints. Moment sensors are used in laboratory testing, manufacturing, and quality assurance to verify that components meet specified torque characteristics.

Two main configurations are common. Inline (or shaft) torque sensors are integrated into a rotating shaft so that the torque is measured directly in the rotating element. Reaction (or non-rotating) torque sensors are mounted to the structure and measure the torque transmitted through a stationary connection. Both types may be used in end-of-line testing, development rigs, or in-situ monitoring of machinery.

The most prevalent sensing principle is strain-gauge torque sensing, where strain gauges are bonded to a shaft or reaction element in a full-bridge arrangement to convert deformation caused by torque into an electrical signal. Other approaches include magnetoelastic, capacitive, piezoelectric, and optical methods. Output is typically an analog voltage or current, often accompanied by digital conditioning for calibration, temperature compensation, and bandwidth adjustments.

Performance characteristics include torque range from a few newton-meters to several kilonewton-meters, accuracy, resolution, temperature range, and dynamic bandwidth. Proper installation, alignment, and calibration are essential to maintain accuracy. Moment sensorer find applications in automotive testing, robotics and automation, industrial machinery, aerospace, and sports equipment development, where direct measurement of torque provides valuable insight into system behavior.