Youla parameterized adaptive vibration suppression with adaptive notch filter for unknown multiple narrow band disturbances. (February 2019)

• Record Type: Journal Article
• Authors: Wu, Zhizheng; Zhang, Maotong; Chen, Zhenyou; Wang, Pei
• Is Part Of: Journal of vibration and control. Volume 25:Number 3(2019)
• Page Start: 685
• Page End: 694
• Publication Date: 2019-02
• Subjects: Youla parameterized -- unknown disturbance -- multiple narrow band -- adaptive -- active vibration control; Vibration -- Periodicals; Damping (Mechanics) -- Periodicals; 620.3
• DOI: 10.1177/1077546318794539
• Languages: English
• ISSNs: 1077-5463

Abstract

The vibration caused by the multiple narrow band disturbances exists widely in the mechanical systems. In this paper, a Youla parameterized adaptive control approach is introduced for the rejection of unknown multiple narrow band disturbances. The adaptive notch filter weighted Q (Youla) parameter is adopted to the online internal model principle-based regulator, so that the disturbances can be fully attenuated and the robustness of the closed-loop system is improved. A central controller is first designed to obtain the desired baseline loop shape. Then, the controller is augmented by a notch filter weighted Q parameter to construct a series of stable controllers and the Q parameter in the stable controllers is tuned online to obtain the desired controller. The adaptive control method is applied in a data storage system to attenuate the flying height vibration and the experimental results illustrate the effectiveness of the proposed approach in rejecting unknown multiple narrow band disturbances.