Dynamic torque sensor: Difference between revisions

Revision as of 14:15, 12 July 2025

Revision as of 14:36, 12 July 2025

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== Working principle ==

DynamicA dynamic torque sensor uses measurement principles such as strain gauge technology, magnetoelastic effects, optical sensing, and piezoelectric effects.<ref name=":0" /><ref name=":1" /><ref name=":3" />

=== Strain gauge technology ===

[[File:Strain_gauge_deformation.jpg|thumb|Strain gauge deformation under tension (left) and compression (right)]]

[[Strain gauge|Strain gauges]] [[Deformation (engineering)|deformsdeform]] when torque is applied. This results in changeschange in [[Electrical resistance and conductance|electrical resistance]] proportional to the torque, allowing tothe measuremeasurement theof strainsstrain. These sensors claim an accuracy of ±0.3 % of full scale in laboratory tests and are commonly integrated into measurement rigs.<ref name=":0" />

=== Magnetoelastic effects ===

These sensors use changes in [[Magnetic field|magnetic]] properties, when torque is applied. The magnetoelastic principle enables non-contact torque measurement. Manufacturers report that magnetoelastic sensors can operate in high-temperature or high-vibration conditions with minimal maintenance.<ref name=":1" />

=== Optical sensing ===

Optical torque sensorsensors utilizesutilize light-based techniques, namely [[interferometry]] or [[Phase (waves)|phase shift]] measurements, to detect torque. They provide high sensitivity, immunity to [[electromagnetic interference]], and minimal mechanical interference.<ref name=":2" />

=== Piezoelectric effects ===

[[File:SchemaPiezo.gif|thumb|Animated schema of the piezoelectric effect]]

By using [[Piezoelectricity|piezoelectric crystals]], these sensors create an [[electric charge]], when mechanical stress is applied, thus capturing high-[[frequency]] dynamic torque events.<ref name=":3" />

== Types of dynamic torque sensor ==

DynamicA dynamic torque sensor can be classified according to theirits sensing technology and application.

Firstly, rotary torque sensors measure torque on rotating shafts. They use strain gauges or magnetoelastic technology and are used in [[Engine|engines]], [[gearboxes]], and [[Drive shaft|drive shafts]].<ref name=":11">Morsy, W. (2024). Fabrication of a rotating shaft torque sensor for power data determination of rotary farm implements. ''Alexandria Journal of Soil and Water Sciences'', ''8''(1), 49-56.</ref>