The use of a vibration table will have a significant impact on the test results, mainly reflected in the following aspects:

1、 The influence of amplitude

1. The relationship between amplitude and degrees of freedom：

• The amplitude is directly proportional to the degrees of freedom of the vibration table, that is, the larger the degrees of freedom, the larger the amplitude.

• In testing, it is necessary to choose an appropriate amplitude size to adapt to different test objects.

2. The influence of amplitude on test results：

• When the amplitude is too large, it may cause excessive vibration of the test object, thereby affecting the accuracy of the test results.

• If the amplitude is too small, it may not fully excite the vibration characteristics of the test object, resulting in incomplete test results.

2、 The impact of frequency

1. The limitation of degrees of freedom on frequency：

• The degree of freedom will affect the frequency of vibration. When the freedom is too small, the vibration frequency is limited and cannot reach the required testing frequency.

• On the contrary, when the freedom is too high, the testing frequency may exceed the required frequency range.

2. The impact of frequency on test results：

• Frequency is an important parameter in vibration testing, and different frequency ranges may excite different vibration characteristics of the test object.

• If the testing frequency does not match the actual usage frequency, it may result in a deviation between the test results and the actual performance.

3、 Selection and matching of test objects

1. Matching of test object and vibration table：

• Different test objects require different degrees of freedom values for the vibration table. For example, lightweight small parts may require a vibration table with fewer degrees of freedom, while large heavyweight parts may require a vibration table with greater degrees of freedom.

2. The impact of improper matching：

• If the test object does not match the vibration table, it may cause problems such as jumping and excessive vibration during the testing process, thereby affecting the accuracy of the test results.

4、 Other influencing factors

1. The performance of the device itself：

• The performance and quality of the core components of the vibration table, such as exciters and sensors, directly determine the accuracy of the test bench. Equipment aging, wear and tear, and improper installation can all lead to a decrease in accuracy.

2. environmental factors：

• The environmental factors such as temperature, humidity, and noise in the laboratory may also have a significant impact on the accuracy of the vibration table. Unstable environmental conditions may cause fluctuations in equipment performance, thereby affecting testing accuracy.

5、 Measures to improve testing accuracy

1. Choose a suitable vibration table：

• Select a suitable vibration table based on testing requirements and the characteristics of the testing object, ensuring that parameters such as amplitude and frequency match the actual usage conditions.

2. Optimize the testing environment：

• Improve laboratory environmental conditions, maintain stable temperature, humidity, and noise levels to reduce the impact of the environment on test results.

3. Regularly calibrate equipment：

• Regularly calibrate the vibration table to ensure stable and reliable equipment performance. During the calibration process, attention should be paid to indicators such as linearity, repeatability, and stability of the equipment.

4. Adopting advanced measurement methods：

• Optimize the measurement process to improve the accuracy of signal acquisition, transmission, and processing. Adopting advanced measuring equipment and technology to reduce measurement errors.

In summary, the use of a vibration table has a significant impact on the test results. To ensure the accuracy of test results, it is necessary to choose a suitable vibration table, optimize the testing environment, regularly calibrate equipment, and adopt advanced measurement methods.