Smart panels with SISO or MIMO velocity feedback control systems (Abstract)

Gardonio, Paolo and Elliott, Stephen (2003) Smart panels with SISO or MIMO velocity feedback control systems (Abstract). 146th Meeting Acoustical Society of America, Austin, Texas, USA. 10 - 14 Nov 2003. 1 pp .

Record type: Conference or Workshop Item (Other)

Abstract

This paper summarizes and contrasts the research work that has been carried out on two types of smart panels with ASAC control systems: first, a SISO velocity feedback control system with a sensor that detects the volumetric component of the vibration of the panel and an actuator that exerts a uniform force over the surface of the panel and, second, a MIMO decentralized feedback control system using a grid of sensors that measure the point velocities of the panel and a grid of actuators that generates point excitations in the locations of the sensors. Both theoretical predictions and experimental results are presented for a reference problem of control of sound radiation by a rectangular panel clamped along the perimeter. The simulations carried out for the two systems have shown that the smart panel with the volume velocity sensor and uniform force actuator can in principle give better control performance than the smart panel with the sixteen decentralized control units. However, the practical implementation of the smart panel with the volume velocity sensor and uniform force actuator is limited by stability problems which are instead a minor issue for the panel with 16 decentralized velocity feedback control units.

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