How to calibrate and dynamically adjust torque sensors?

Torque sensor is a common type of sensor widely used in industrial automation, robotics, automotive, aerospace and other fields. The application of torque sensors requires calibration and dynamic adjustment to ensure the accuracy and stability of measurement results. This article will introduce the relevant knowledge of torque sensor calibration and dynamic adjustment.
1. Calibration of torque sensor
The calibration of torque sensors refers to adjusting the sensitivity, linearity, zero drift and other parameters of the sensor to make the measurement results of the sensor more accurate and reliable. The calibration of torque sensors is usually divided into the following steps:
(1) Environmental preparation
Before calibrating the torque sensor, environmental preparation is required, including accurately checking the working status of the sensor and measuring equipment, cleaning the dirt on the sensor surface, and ensuring that the sensor is in normal working condition.
(2) Calibration device construction
Building a calibration device requires selecting different calibration objects, such as universal testing machines and test benches, to ensure that the calibration device has sufficient quality and stability to ensure the accuracy of the calibration results.
(3) Calibration parameter settings
Before calibration, calibration parameters such as range and calibration points need to be set according to the specific characteristics of the sensor.
(4) Calibration data collection
During the calibration process, data collection is required to ensure that the number of collection points is sufficient to ensure the accuracy of the calibration results.
(5) Calibration data processing
After data collection, data processing is required, such as calculating the mean, standard deviation, etc., to determine the accuracy and stability of the calibration results.
(6) Confirmation of calibration results
After completing the calibration, it is necessary to confirm the calibration results and whether the differences between the results and the standard values are within an acceptable range.
2. Dynamic adjustment of torque sensor
During the use of torque sensors, they are subject to various factors such as temperature changes, mechanical vibrations, electromagnetic interference, etc., which may lead to inaccurate or unstable sensor output results. Therefore, it is necessary to dynamically adjust the sensor to ensure its accuracy and reliability.
(1) Temperature compensation
Temperature is one of the important factors affecting the output results of torque sensors, and temperature compensation is necessary to ensure the accuracy of the sensor. Common temperature compensation methods include isolation compensation, simulation compensation, etc.
(2) Mechanical vibration compensation
Mechanical vibration can interfere with the output results of sensors, so it is necessary to compensate the sensors for mechanical vibration. Common mechanical vibration compensation methods include software filtering, mechanical isolation, etc.
(3) Electromagnetic interference compensation
Electromagnetic interference is another important factor that affects the output results of sensors, and it is necessary to compensate the sensors for electromagnetic interference to ensure their accuracy. Common electromagnetic interference compensation methods include electromagnetic shielding, filters, etc.
(4) Calibration of sensor signal amplifier
The calibration of sensor signal amplifiers is also an important step in ensuring the accuracy of sensor output results. Common calibration methods include zero calibration, gain calibration, etc.
In summary, torque sensors need to be calibrated and dynamically adjusted in applications to ensure the accuracy and stability of sensor output results. The calibration of torque sensors requires following certain calibration steps and principles, and dynamic adjustment requires selecting appropriate compensation or adjustment methods based on the actual working situation of the sensor to achieve good measurement results.