Title :
A quasi online tuning structure for optimum delayed feedback vibration absorber
Author :
Jalili, Nader ; Olgac, Nejat
Author_Institution :
Dept. of Mech. Eng., Northern Illinois Univ., DeKalb, IL, USA
Abstract :
An automatic tuning structure is presented for an active vibration suppression methodology, delayed feedback vibration absorber (DFVA). The DFVA, is an improved version of the delayed resonator (DR) vibration absorber. Optimum DFVA offers minimum peak frequency response within a given wide band excitation frequency range. The work introduces a scheme for the tuning of the DFVA against parametric uncertainties in the system. This is achieved through a nested identification and control optimization procedure. Feasibility of the proposed methodology is demonstrated through simulations. Results show that using only three iterations of a nested identification/optimization, the frequency response properties are improved better than 25%
Keywords :
feedback; frequency response; optimisation; parameter estimation; stability; tuning; vibration control; active vibration suppression methodology; automatic tuning structure; delayed resonator vibration absorber; minimum peak frequency response; nested identification/optimization; optimum delayed feedback vibration absorber; parametric uncertainties; quasi online tuning structure; wide band excitation frequency range; Acceleration; Control systems; Delay effects; Feedback; Frequency response; Mechanical engineering; Optimal control; Tuning; Vibrations; Wideband;
Conference_Titel :
American Control Conference, 1999. Proceedings of the 1999
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-4990-3
DOI :
10.1109/ACC.1999.786085
