Environmental
High-speed, multi-channel vibration control and data reduction systems -
LMS Test.Lab Environmental provides a powerful, high-speed multi-channel vibration control system, certified for spacecraft testing. The vibration control systems can be expanded to hundreds of control, measurement and limiting channels. Users will find it easy to use for routine random, shock, sine, and combined modes testing and have everything they need for state-of-the-art control and extensive data analysis.
Environmental testing for aerospace
LMS Test.Lab Environmental delivers a complete solution for qualification and acceptance testing on large and fragile structures such as spacecrafts, satellites, and system prototypes. It is designed for parallel acquisition and online reduction of vibration channels during random or sine closed-loop vibration control testing, in reverberant rooms, or for high frequency transient capture in deployment testing.
LMS Test.Lab Environmental consists of two product lines: LMS Test.Lab Environmental Control and LMS Test.Lab Environmental Data Reduction. LMS Test.Lab Environmental Control conducts qualification tests on structures in closed loop, and LMS Test.Lab Environmental Data Reduction is dedicated to design validation by complementing the vibration control system with additional measurement channels, decoupled from the closed-loop control system. Both product lines optimize and increase qualification and acceptance test productivity. The same LMS hardware and software environment can also be used to conduct modal survey tests (MST) in order to correlate and update FE models.
Safety is the primary objective
LMS Test.Lab Environmental protects the integrity of the tested structure throughout the entire procedure. Real-time control is maintained as the channel count increases. Many safety features are built into the hardware and software to ensure a reliable control loop: from comprehensive pre-test checks, response limiting and notching on any number of channels, to a controlled shutdown if limits are exceeded.
Productivity and convenience
As the solution is designed for maximum productivity, users can arbitrarily map physical inputs to define control, measurement and monitoring channels; recall calibration values from a database; monitor what they want as the test proceeds and batch plot results with a single click. After each test, real-time animation on a geometry, based on measured data, provides a quick test execution check.
Full test object protection
The entire measurement chain is continuously monitored during testing for open or short circuits. Overload checks are carried out in several places of the signal paths, including up-front, full bandwidth checks on anti-alias filters. Dedicated hardware circuits guarantee smooth shutdown of output signals, even in case of power failure. During closed-loop control RMS and line-by-line abort checking, the system performs single or multi-point control, drive limitation, sigma clipping, as well as continuous open channel and overload checks. Fast loop times ensure a reliable control loop.
Safe, fast and accurate control
LMS Test.Lab Environmental supports random, swept sine, tracked sine dwell, shock, waveform replay and combined test modes for single-input control. It integrates all common industry standards for vibration and shock testing. Highly flexible, the system supports non-standard test specifications and offers an accurate reproduction of target reference spectra on a shaker. LMS Test.Lab Triax MIMO Random Control provides multiple input random control on decoupled shaker setups.
Predefined workflow for optimal productivity
Smart test routines and the intuitive user interface of LMS Test.Lab Environmental deliver optimal productivity throughout the testing cycle. Operators follow a workflow defined by the supervisor, which includes overall guidelines, predefined transducer sets, online processing and reporting, as well as a set reference profile and control strategy. Users are in control at all times; they can measure as many parallel channels as needed to monitor the structure at all sensitive points. Setup procedures use a spreadsheet-like interface to facilitate the entry of repetitive values.
High performance closed loop control
The most distinctive feature of the new system is its speed – real-time control is maintained for up to a 100 channels at a control bandwidth of up to 20kHz. All LMS SCADAS III signal conditioning modules are supported, so control is possible from accelerometers. Channel mapping gives users the flexibility to use front-ends more efficiently and choose which channels to use for control and measurement.
Online data reduction
For those cases in which testing requires even more channels, the vibration control system can be extended with an online reduction system using the same measurement algorithms as the vibration-only system, but on an acquisition-only system. The overall measurement capacity is extended even further.
Flexible analysis and effective communication
LMS Test.Lab Environmental offers analysis tools for the most demanding test campaigns. With intuitive data navigation, a user attribute-based search functionality, and comprehensive analysis functions, users can easily visualize and interpret test data. The solution automatically generates reports with a single mouse click. Full compatibility with Microsoft Office and embedded support of OLE/ActiveX technologies turns static reports into dynamic information files. Readers can adapt axis scaling, add cursors and change legends to create their own customized view. LMS Test.Lab Environmental helps testing teams effectively visualize, analyze, report, and share their work with others. The LMS Test.Lab Environmental software is designed to work with the LMS SCADAS III controller hardware system that incorporates 24-bit ADC and DAC technology. This tight integration guarantees maximum safety.
- Test expensive, unique objects in full safety and confidence
- Increase productivity using the convenient and easy workflow
- Test according to a large variety of scenarios, including MIL-STD 810
- Keep control over measurements and independently perform parallel measurements in the control loop
- Validate prototypes in support of design and development
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