Designing of Robust FeedForward Active Vibration Control System using Online-Secondary Path modeling with Variable Step Size

The proposed model uses Chirp signal for estimating of online secondary path identification which contributes to the residual error and to ensure the convergence of the AVC system, the main aim, and advantage of the paper is to tackle sudden disturbances and uncertainties in the system. Also studied the convergence behavior of the FXLMS algorithm in the AVC system by using a chirp signal. Normally, the larger the auxiliary noise signal, the faster an accurate model can be obtained. However, it also increases the residual error of the Active vibration control (AVC) system. The main problem related to the appearance of axillary noise in residual vibration is also minimized by the proposed method. In this way, much good modeling accuracy and much fast convergence rate can be achieved. Computer simulation demonstrates the effectiveness and shows that the chirp signal with variable step size (VSS) and OSPM approach has more vibration rejection capabilities and how can control sudden disturbances with much better convergence rate.