Satellite Vibration Testing--Vibration Testing Machine
In space, satellites must function properly under extreme operating conditions. Space is an almost vacuum environment, and satellites need to deal with high levels of electromagnetic radiation and drastic temperature changes. In addition, during launch, satellites experience extremely high levels of vibration and noise, which can cause serious component damage or destruction. Therefore, before sending these expensive and sophisticated objects into space, it becomes crucial to thoroughly test the entire satellite, including all subsystems, to ensure that it is adapted to launch forces and harsh environmental pressures.
These include tests simulating the vacuum of space to ensure the tightness of the satellite and the adaptability of the materials, temperature cycle tests simulating the operation of the satellite in extremely cold and extremely hot conditions and ensuring that its individual components can function properly under these temperature changes, and vibration and noise tests simulating the vibration and noise during launch. To see if the satellite's structure and components can withstand these forces without damage.
In general, data acquisition and analysis systems with hundreds of channels are used to simultaneously collect vibration data from almost all locations of the satellite. The vibration testing machine is composed of electric vibration table. The size of the shaker depends on the size and payload of the satellite under test. Typically, the satellite is mounted on a vertical head expander and a horizontal slide
Sinusoidal sweep frequency is a key test for satellite identification. Since all tests are run on actual satellites, preventing overtesting is critical, as is the ability to apply restricted channels. With a restricted channel, the maximum allowable vibration level is assigned to a restricted channel at a specific location of the satellite and its subsystems. Once these channel levels reach a predefined limit, the drive signal is "trapped" to reduce the test level and ensure that the limit is not exceeded at these limit locations.
If the vibration controller system does not have a high enough channel number for a specific test or requires a separate analysis system, a specialized dynamic signal analyzer can be used. The dynamic signal analyzer will run so-called sinusoidal reduction software, which allows hundreds of sinusoidal data channels to be measured simultaneously and can be used for additional monitoring. The synchronization between the sine controller and the sine attenuation analyzer is a constant output level adapter (COLA) signal that carries scan sine frequency information and has a constant voltage level.
Data recording is also an important part of satellite testing. Controllers and analyzers provide the option to simultaneously record time history data for all channels during vibration testing. All vibration data are recorded for recording and post hoc analysis
The JOEO team used a vibration testing machine, a high-channel vibration controller and a large-channel number dynamic signal analyzer to recreate the simulated vibrations that the satellite will experience during its launch in December 2021. The central part of the device contains a large air cushion capable of expanding and contracting at a precise rate, frequency. The vibration testing machine from JOEO enables turnkey solutions for satellite testing for both commercial and military applications. For more information about satellite vibration testing, please contact [email protected].
These include tests simulating the vacuum of space to ensure the tightness of the satellite and the adaptability of the materials, temperature cycle tests simulating the operation of the satellite in extremely cold and extremely hot conditions and ensuring that its individual components can function properly under these temperature changes, and vibration and noise tests simulating the vibration and noise during launch. To see if the satellite's structure and components can withstand these forces without damage.
In general, data acquisition and analysis systems with hundreds of channels are used to simultaneously collect vibration data from almost all locations of the satellite. The vibration testing machine is composed of electric vibration table. The size of the shaker depends on the size and payload of the satellite under test. Typically, the satellite is mounted on a vertical head expander and a horizontal slide
Sinusoidal sweep frequency is a key test for satellite identification. Since all tests are run on actual satellites, preventing overtesting is critical, as is the ability to apply restricted channels. With a restricted channel, the maximum allowable vibration level is assigned to a restricted channel at a specific location of the satellite and its subsystems. Once these channel levels reach a predefined limit, the drive signal is "trapped" to reduce the test level and ensure that the limit is not exceeded at these limit locations.
If the vibration controller system does not have a high enough channel number for a specific test or requires a separate analysis system, a specialized dynamic signal analyzer can be used. The dynamic signal analyzer will run so-called sinusoidal reduction software, which allows hundreds of sinusoidal data channels to be measured simultaneously and can be used for additional monitoring. The synchronization between the sine controller and the sine attenuation analyzer is a constant output level adapter (COLA) signal that carries scan sine frequency information and has a constant voltage level.
Data recording is also an important part of satellite testing. Controllers and analyzers provide the option to simultaneously record time history data for all channels during vibration testing. All vibration data are recorded for recording and post hoc analysis
The JOEO team used a vibration testing machine, a high-channel vibration controller and a large-channel number dynamic signal analyzer to recreate the simulated vibrations that the satellite will experience during its launch in December 2021. The central part of the device contains a large air cushion capable of expanding and contracting at a precise rate, frequency. The vibration testing machine from JOEO enables turnkey solutions for satellite testing for both commercial and military applications. For more information about satellite vibration testing, please contact [email protected].
