Crystal Instruments has assembled an 8-shaker MIMO Vibration Control systems platform at its Santa Clara headquarters, pushing the boundaries of what is possible with multi-input multi-output (MIMO) vibration control. The system is both a research tool and a live demonstration of how modern test architectures can replicate real-world multi-directional vibration environments with exceptional fidelity.
Eight Coordinated Shakers, One Unified Control Architecture
The tabletop platform arranges eight individually driven shakers around a central test structure. Each shaker is independently controlled yet precisely synchronised through Crystal Instruments’ control architecture — enabling the system to generate complex spatial vibration fields that a single-axis shaker simply cannot replicate.
Capabilities demonstrated on the platform include:
- Multi-shaker coordination and phase control
- MIMO frequency response function (FRF) identification
- Distributed structural excitation
- Complex vibration field reproduction
- Advanced modal and structural response testing
This level of sophistication maps directly to real-world needs in automotive, aerospace, defence, and rail testing — where components experience simultaneous multi-axis inputs that sequential single-axis testing cannot adequately represent.
MIMO Control: Moving Beyond Single-Axis Testing
Traditional vibration testing runs one axis at a time. MIMO testing runs multiple excitation inputs simultaneously, correlating the response across the entire structure in real time. This matters enormously for complex assemblies — automotive subframes, satellite structures, railway underbody components — where cross-axis coupling and phase relationships between inputs affect how the product actually fails.
Crystal Instruments offers dedicated MIMO Random Vibration Control and MIMO Sine Vibration Control control modules, as well as the Spider-80M MIMO Vibration Controller, which is purpose-built for MIMO vibration controller applications. For the most demanding six-degree-of-freedom multi-axis vibration test systems programmes, these platforms can be integrated with multi-axis shaker systems.
Available Through THP Systems in the UK
THP Systems supplies the full Crystal Instruments portfolio in the UK, including MIMO-capable Spider controllers, high-channel-count front-ends, and the EDM software suite that ties them together. Our engineers can advise on the right MIMO configuration for your structural testing requirements — whether that is a two-shaker entry-level setup or a full multi-axis system.
Ready to explore MIMO vibration testing? Speak to our team or visit our Crystal Instruments product pages for the full range.
Original source: https://www.crystalinstruments.com/vibration-testing-articles/8-shaker-mimo-vibration-test-system
