Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
560959 | Mechanical Systems and Signal Processing | 2006 | 16 Pages |
The active control of vibration consists of generating an extra force in order to decrease the level of vibration. The problem with controlling complex structures is to shift from a higher order system to a reduced order decoupled system. This paper proposes the use a narrow-band approach to control one low damped mode among others. The originality of this paper is in the association of complex envelopes with both the narrow-band signals and the impulse response of the reduced order system. As a result, an explicit adaptive controller of complex envelopes is tuned according to a pole placement method. Experiments with a plate show the efficiency of the approach for different types of band-pass excitations: chirp, sinusoidal and band-pass noise. The main advantages of the complex envelope approach are an extremely reduced order system, consequently the numerical implementation is simplified.