Investigation Of Active Vibration Control With Online Secondary Path Modeling

Active vibration control is a pioneering technique associated with vibration theory, automatic control, computer technique and signal processing techniques etc. It is found that the active vibration control is more efficient and economical than the traditional passive methods for low-frequency vibration suppression and can track the variance of the disturbance and the time-varying phenomena. In practical control systems, the secondary path is one of the key affecting factors for vibration reduction and the stability of the system, the modeling of secondary path is important and practical.The model of a marine diesel two-stage vibration isolation system is constructed and a new adaptive strategy with online secondary path modeling is adopted in the study. The simulation investigations at the environment of MATLAB and the test on the diesel engine two-stage isolation mounting are conducted. The simulative and experimental results demonstrated that good control results are achieved for different exciting conditions and the control system is robust.