Non-Contact Torque Sensors Increase Fuel Economy, Improve Ride Comfort and Safety

In order to determine the most suitable torque sensor, it is necessary to understand the application and environment. Some applications may require underwater sensors, while others may only need a torque sensor. The type of mounting and assembly is also important. Some are mounted flange-to-flange, while others are mounted shaft-to-shaft. The torque sensors must be able to detect the rotational force in both clockwise and counterclockwise directions.

The most common design for a torque sensor uses bonded strain gauge technology. The strain gauges are bonded to a shaft with a 45-degree inclination. The application will determine the type of cross-section and materials used for the shaft. Depending on the application, a cruciform, square, or circular cross-section is appropriate. Some torque sensors are made from a combination of these materials.

When selecting a torque sensor, make sure to consider its physical and environmental requirements. The temperature, humidity, and contaminants should be acceptable. Rotating sensors need to know the rotational speed. In order to choose the most suitable torque sensor, one must be able to measure the number of revolutions per minute (RPM) of the rotating object. The rpm is another crucial factor. A torque sensor needs to be able to measure both speed and load. Emerging applications of torque sensors are expected to drive the growth of the global torque sensor market during the forecast period.



There are several types of torque sensors. Depending on the type of application, there are different torque sensors available. Recently, in July 2020, NSK Ltd., a manufacturer of bearings in Japan, developed a non-contact torque sensor capable of measuring the torque of drive shafts in vehicles in real time. This new technology can increase fuel economy, improve ride comfort and safety.

When it comes to determining the torque, a few factors come into play. Firstly, you need to determine the application and environment. This will help you identify the correct torque sensor for your needs. In some cases, the sensor can be used with a rotor. However, a rotor requires more power than a stator, and vice versa. Secondly, you must determine the speed of the rotor and the load. If you don't know the speed and location of the movement, you need to look for a higher-torque-span or a magnet.

Besides the capacity, there are several other factors that need to be taken into account before choosing the right torque sensor. In-vehicle applications are the most popular type, while racecars and airplanes are the most expensive. Generally, the capacity and physical requirements of the vehicle will determine which type of torque sensor is most appropriate. The higher the speed, the better. A high-quality torque sensor will ensure high performance. 

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