Adaptive Vibration Control in Mechanical Systems
Summary
Adaptive vibration control encompasses a suite of methods designed to attenuate unwanted oscillations in structures and machinery by dynamically adjusting control parameters in response to changing operating conditions or disturbances. These approaches range from passive and semi-active devices, such as tuned mass dampers with real-time tuning, to fully active systems employing sensors, actuators and advanced algorithms. Recent progress has focused on enhancing robustness to uncertainties, extending operational bandwidth and reducing reliance on precise plant models. Innovations in online parameter estimation, data-driven control and machine-learning-assisted adaptation have enabled more effective suppression of multi-frequency excitations in civil, aerospace and industrial applications. The global impact includes improved structural safety, extended equipment lifespan and reduced downtime, with concrete examples found in vibration mitigation for tall buildings, helicopter rotor assemblies and precision manufacturing machinery.
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Adaptive Vibration Control in Mechanical Systems publication trend
The graph below shows the total number of articles in adaptive vibration control in mechanical systems across all publications each year (not limited to Nature Index journals).
Technical terms
Adaptive vibration control: A control methodology that adjusts its parameters or structure online to maintain vibration suppression under changing conditions.
Semi-active dynamic vibration absorber: A device whose mechanical properties (for example stiffness or damping) can be tuned in real time to attenuate specific vibration frequencies.
Feedforward control: A strategy that anticipates disturbances by processing reference or disturbance signals to generate compensating control actions before oscillations grow.
Passivity: A property of a system wherein it cannot generate energy, used in controller design to ensure robust stability under model uncertainties.
Multi-harmonic disturbance: An excitation composed of several sinusoidal components at different frequencies, often arising from interactions in complex mechanical assemblies.
References
- Online Frequency Estimation on a Building-like Structure Using a Nonlinear Flexible Dynamic Vibration Absorber. Mathematics (2022).
- Active Vibration Control of Helicopter Maneuvering Flight Using Feedforward‐Robust Hybrid Control Based on Reference Signal Reconstruction. Shock and Vibration (2021).
- Cancellation of unknown multi-harmonic disturbances in multivariable flexible mechanical structures. Automatica (2022).
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