Experiments on Active Vibration and Noise Reduction of a Panel Using Predictive Techniques

An experimental study of generalized predictive control of mechanically induced vibration and near-field sound radiation from a thin plate is described. The test panel is equipped with accelerometers and piezoelectric patches. The vibroacoustic reduction as a function of predictive controller design is discussed. The results demonstrate a large increase in regulation when the controller implicitly incorporates the disturbance model. Average 9 dB vibration and 5.5 dB noise reductions integrated over 0–1200 Hz were obtained for the case of random broadband disturbance. A satisfactory rejection was also achieved when the test panel was excited by the superposition of wide-band and narrow-band off-resonance disturbances.