| Active Modal Analysis |
| System modification by the additional output feedback loop |
: Modal data increase from the modified system
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| Basic idea |
- Information increase of closed-loop dynamics
- Knowledge of output feedback gains & actuator dynamics
- New information obtained about the system
- Upgrade of system identification performance
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| Feedback scope |
- The sensor set slide along the surface
- The natural frequency measurement of each location at the anti-nodal point
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| Simulation result (beam) |
- Beam with 2 point damages
- x=0.35, 0.76 (15% stiffness reduction)
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