Key in global sectors like industrial manufacturing, transportation, and energy, torque sensors are precision equipment for measuring torque, speed, and mechanical power.
Classification of Torque Sensors
Working principle, measurement technique, and dynamic characteristics define torque sensors mostly.
1. Using a Working Principle
Strain Gauge Torque Sensors:Using strain gauges on an elastic shaft, strain gauge torque sensors detect micro-deformations brought on by torque and transform resistance changes into electrical signals. Their great accuracy is well-known, and they find extensive application in automotive component testing and precision machinery.
Not Contact Torque Sensors:
Magnetic - Electric Type:Torque can be separated into closed- magnetic - circuit and open- magnetic - circuit types; it is measured by variations in magnetic flux. Strong anti-interference capacity of these sensors exists.
Photoelectric Type:Fast reaction photoelectric element transforms the change in light intensity resulting from torque on the driving shaft into a current signal.
Fibre - Optic Type: Has complicated installation and is sensitive to environmental interference although based on the ideas of light reflection and phase difference.
Wireless Strain Type:For high-speed rotating equipment, wireless strain type-using wireless transmission instead of conventional slide rings-helps to reduce mechanical wear.
Electronic Torque Meters:Portable tools intended for on-site energy-efficient evaluation of equipment like pumps and fans are electronic torque meters. They can real-time, without complicated installation, measure shaft power and efficiency.
2. by means of measurement technique
Contact Type:Measurement are taken straight through mechanical connections such as couplings. The signal is constant, but wear is possible. They find frequent use in low-speed, fixed equipment.
Non - Contact Type:Measurements are taken indirectly utilising electromagnetic, optical, or wireless technologies (such as magnetic - electric and photoelectric kinds). These are excellent for high - speed, accuracy, or severe settings.
3.By Dynamic Characteristics
Dynamic Torque Sensors: Also known as rotating torque sensors, they are utilised for real - time monitoring of dynamic torque changes in motors and automotive transmission systems.
Static Torque Sensors: These detect fixed or slowly fluctuating torque and are extensively used in torque calibration of manual tools and quality control on assembly lines.
Practical Application Fields
Torque sensors find great use in many different fields, with important situations including:
1.Vehicle and Transportation
Calculating power and output torque for engine and gear research and testing.
Electric power - assisted steering (EPS) systems use non-contact sensors to track torque on the steering wheel in real-time and modify assistance.
Durability testing of entire cars, such as body torsional stiffness testing.
2.Industrial Manufacturing and Equipment
Monitoring load torque in motors, fans, and pumps to maximise energy efficiency and prevent overload problems.
Ensuring machining precision in CNC machine tools and torque control in robot manipulators.
Measuring torque in gearboxes and main shafts of wind turbines to assure operation and maintenance, as well as power generating efficiency.
3.Defence and Aeronautical Systems
Monitoring torque in helicopter rotors and aviation engines calls for adaptation to demanding conditions like high temperatures and pressures.
Low - latency torque measurement in satellite drive systems and missile guiding systems, high - dependability.
4.Minerals and Energy
On oil drilling rigs, real-time monitoring of drill pipe torque serves to alert of mechanical overload hazards.
optimising power distribution in mining machinery like conveyors and crushers to lower energy usage.
5.Investigations and Quality Control
In materials laboratories, testing torque endurance limitations of parts including gears and bolts.
Electronic torque meters are utilised for real-time efficiency analysis of fans and pumps on-site, so helping to save energy by means of retrofits.
6.Fields of consumer and special purpose
Precision torque management of fasteners in vehicle assembly and home appliance manufacture is guaranteed by electric and pneumatic torque wrenches.
To keep mechanical arm operation accuracy or flight stability, drone and service robot motor torque is under constant observation.
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