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Service and Technology
Difference between dynamic and static torque sensors
Category:
Relevant sensor technology papers
Publish Time:
2021-08-04
Common dynamics Torque sensor Mainly in the following forms:
First is the inductive type Torque sensor This type of sensor mainly uses a non-contact measurement method, Torque sensor has a longer lifespan, high reliability, and is not easily worn. The second is the potentiometer type Torque sensor This type of sensor can be divided into gear type, torsion bar type, and rotary arm type according to its type. Among them, the torsion bar type has a simple measurement structure and relatively high reliability, and was widely used in the early days. This type of sensor is contact type, and there is wear, which reduces its performance.
There is also a metal strain gauge type: This type Torque sensor mainly consists of strain gauges pasted on the elastic shaft to form a measuring bridge. When the elastic shaft is subjected to torque, it will produce a slight deformation, which causes a change in the bridge resistance. The change in the resistance of the strain bridge is converted into a change in the voltage signal, thereby achieving the desired torque measurement. However, this type Torque sensor is greatly affected by the strain gauge material and the accuracy of the voltage regulator.
Dynamics Torque sensor and the difference between static and dynamic torque:
Static Torque sensor and dynamic Torque sensor The difference is not large, the key is the sampling speed of the secondary instrument.
Dynamics Torque sensor Generally used to test occasions with drastic changes in torque, it is necessary to capture torque or torque peaks, such as tightening machines, electric wrenches, motor output torque, engine output torque, and drill string torque.
Static Torque sensor Generally used to test occasions with slow changes in torque, the sampling speed is generally less than 50 times per second, such as testing manual torque wrenches, static torque of gearboxes, etc.
In some cases, because the test object is rotating, for the convenience of testing, dynamic Torque sensor can also rotate.
Dynamics Torque sensor The electrical signal of the elastic shaft under torsion can be measured. Strain electrical measurement technology is used to form a strain bridge on the elastic shaft, thereby providing power to the strain bridge. After the signal is amplified, it is converted into a frequency signal proportional to the strain through frequency-to-voltage conversion. Static Torque sensor is based on the principle of resistance strain to convert the strain generated by the torque into an electrical signal linearly related to it.
Torque sensor Mainly divided into static Torque sensor and dynamic Torque sensor two categories, static Torque sensor rotation cannot exceed 360 degrees. If you need to measure the static working torque of the equipment, both static and dynamic torque can meet your measurement requirements. In order to save costs, we suggest you choose static Torque sensor measurement. If you need to measure the torque during the dynamic operation of the equipment: You can only choose dynamic Torque sensor to measure.
Dynamics Torque sensor has a very wide range of applications, and can be used in tractors, automobiles, airplanes, various ships, mining machinery to stop torque measurement, can be used for torque measurement and power measurement of sewage treatment systems, and is also widely used in industrial and process industries, and also used for detection of output torque and power of various rotating power equipment, such as: motors, starters, internal combustion engines, etc. It can be used to manufacture viscometers. Static Torque sensor is mainly used in testing systems such as testing machines and static torque detection. Therefore, there are some differences between the two.
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Keywords: Dynamic torque sensor, static torque, metallic resistance strain gauge type, inductive torque sensor
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