Kiertymäsensori

A kiertymäsensori, or torsion sensor, is a type of transducer that converts a torsional or twisting force into an electrical signal. This twisting force can arise from various sources, such as torque applied to a shaft or the twisting of a flexible material.

These sensors typically operate by measuring the change in a physical property that is directly proportional to the applied torque. Common sensing principles include:

Strain gauges: These are resistors whose resistance changes when they are stretched or compressed. When bonded to a surface experiencing torsional stress, the strain gauges deform and alter their electrical resistance, which can be measured to determine the torque.

Magnetoelastic sensors: These sensors utilize the property of certain materials to change their magnetic properties when subjected to mechanical stress. The applied torque alters the magnetic flux within the material, which can then be detected by a magnetic sensor.

Optical sensors: In some designs, optical methods are employed. For example, a beam of light might be directed through a material that deforms under torsion, causing a change in polarization that is then measured.

Kiertymäsensori are used in a wide range of applications. They are crucial in automotive engineering for measuring engine torque, in industrial machinery for monitoring the load on rotating shafts, and in robotics for precise control of robotic arms and grippers. They can also be found in testing equipment for materials science, where the torsional strength of samples is evaluated. The primary advantage of using a kiertymäsensori is its ability to provide accurate and often real-time measurement of twisting forces, enabling better control, safety, and efficiency in various systems.