Active Noise and Vibration Control Applications: Latest Achievements, Challenges and Prospects

Dear Colleagues,

Active technologies have reached maturity and large-scale application in automotive and industrial machinery. Active noise control systems are offered on demand for luxury cars and use anti-noise sound fields generated by loudspeakers. Additionally, active devices can be optionally integrated to adapt the mechanical impedance of suspensions (motor, chassis, wheels, etc.), thereby reducing vibration propagation toward passengers. Such noise reduction concepts often rely on feedforward control strategies (either pure feedforward or combined with feedback). The error signal is either taken from an additional sensor (usually an accelerometer in active vibration control or a microphone in active noise control) or directly from the disturbance.

Contrary to these mature fields of application, the first experiences in aeronautics show these technologies cannot be directly transferred to aircraft. Despite the large number of publications, active noise control (ANC) and active vibration control (AVC) systems are still used sporadically in modern aircraft. The huge expectations regarding these technologies have led to a large number of patents which, however, are often not reliable or cost effective enough to be widely accepted by the aviation industry. Further research on reliable noise predictions and adaptive control strategies is still required to design efficient passive and active noise suppression devices. Advances in experimental techniques are the first steps toward this direction. Control electronics and miniature vibration actuators and sensors would also be of considerable interest. 

This Special Issue welcomes the latest achievements, and prospects for novel actuators, sensors, control strategies, and applications of active noise and vibration control in the field of aeronautics , as well as novel challenges faced in the automotive and machinery systems. Its aim is to collect contributions to progress simulation and integration processes of applied research products with improved modeling and simulations tools, advanced virtual and physical prototyping, and test metrics, while achieving reduced complexity and power consumption. 

Dr. Ignazio Dimino
Dr. Antonio Concilio
Guest Editors

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• ANC, AVC, and ASAC applications
• Modeling and simulation of active noise and vibration control systems
• actuators and sensors for active control systems
• feedforward and feedback control strategies for active systems
• noise and vibration prediction tools integrating passengers’ comfort perception prior or together with physical testing
• experimental techniques for in situ determination of passengers’ comfort associated with active noise and vibration technologies
• technological prerequisites and guidelines for first market prototyping of active systems