First of all, the test rate of the dynamic load cell should match the dynamic response speed of the object being measured. If the test rate is too slow, the test results will be distorted and will not accurately reflect the dynamic characteristics of the object being measured. For example, in a vibration test, if the test rate is too slow, the amplitude and frequency of the vibration cannot be accurately measured, which affects the accuracy of the test results. Therefore, it is necessary to select the appropriate test rate according to the dynamic response speed of the measured object.
Secondly, the dynamic load cell should have sufficient bandwidth for the test rate. Bandwidth is an important measure of the frequency range that a sensor is capable of measuring. If the test rate bandwidth is insufficient, the sensor will not be able to accurately measure the high-frequency dynamic characteristics of the object being measured. For example, in the impact test, the impact force is applied for a short time and at a high frequency, and if the test rate bandwidth is insufficient, the peak and duration of the impact force cannot be accurately measured, thus affecting the reliability of the test results. Therefore, it is necessary to select a test rate with sufficient bandwidth according to the frequency range of the object to be measured.
In addition, the test rate of the dynamic load cell should remain stable. In dynamic force testing, the sensor needs to work continuously for a long time, and if the test rate is unstable, the test results will fluctuate and cannot accurately reflect the dynamic characteristics of the measured object. Therefore, when selecting a dynamic load cell, it is necessary to choose a sensor with a stable test rate to ensure the accuracy and reliability of the test results.
In summary, the test rate of the dynamic load cell has a significant impact on the accuracy and reliability of the test results. In practical applications, it is necessary to select the appropriate test rate according to the dynamic response speed, frequency range and test time of the measured object to ensure the accuracy and reliability of the test results. At the same time, in order to obtain more accurate test results, it is also necessary to pay attention to the influence of factors such as the installation method of the sensor, the ambient temperature and humidity.
In addition, for some special dynamic force test scenarios, such as high-speed collision, ** and other scenarios, special dynamic load cells and testing technologies are required to ensure the accuracy and reliability of the test results. These special dynamic load cells and testing technologies need to be developed and applied for specific scenarios, which are technically difficult and costly.