Acquisition system for qualification and acceptance testing -
The LMS Test.Lab Online Sine, Random and Acoustic Data Reduction system delivers a complete solution for qualification and acceptance testing on large and fragile structures such as spacecrafts and satellites. It is designed for parallel acquisition and online reduction of up to 128 vibration and microphone channels during random or sine closed loop vibration control testing, in reverberant rooms, or for high frequency transient capture in the context of deployment testing.
The system is optimized for online reduction of high channel count tests, with an automatic level and frequency synchronization to the control system. The channels support ICP transducers or any Voltage signal. All relevant functions are calculated online and in parallel. All modes also support a ‘back-up tape recorder’ function, streaming all raw time data directly to the host disk in parallel to the online calculations (standard in transient capture, optional in random and sine modes).
With the included Compare runs add-in worksheet, engineers have an extremely productive tool to browse through all test data at the end of a run, including an automatic overlay of equivalent curves from any set of previous runs. Any change in dynamic behavior between runs so becomes immediately visible.
The Geometry workbook allows the quick generation of wireframe models for full 3D animation of the test and analysis results. The Operational Deflection Shapes workbook ensures easy navigation and selection of the acquired qualification test data, and animation of the vibration pattern at any given frequency.
This solution allows batch plotting with automatic peak cursors of all test data immediately after the test including a wealth of post-test analysis capabilities. The system is optionally expandable to hundreds of channels.
