VIBRATION ISOLATION SYSTEM WITH ACTIVE STIFFNESS CONTROL

This paper presents the dynamic analysis of a linear isolator under active stiffness control. Firstly, the literature review on the active stiffness and the concept of skyhook spring are presented. Then, based on the theoretical equation govern the isolation system model, the effect of active stiffness control in the absolute motion transmissibility performance is studied. In addition, the force response of the isolation system under active stiffness control is also examined to highlight its benefits in improving the isolation system performance.

[1]  J. L. Fanson,et al.  Positive position feedback control for large space structures , 1990 .

[2]  Dean Karnopp,et al.  Vibration Control Using Semi-Active Force Generators , 1974 .

[3]  Daniel J. Inman,et al.  The relationship between positive position feedback and output feedback controllers , 1999 .

[4]  A. Preumont.  Vibration Control of Active Structures , 1997 .

[5]  P. Nelson,et al.  An active vibration isolation system for inertial reference and precision measurement , 1991 .

[6]  Kurt Artoos,et al.  Review of Active Vibration Isolation Strategies , 2011 .

[7]  Philip A. Nelson,et al.  Active control of vibration, 1st edition , 1996 .

[8]  T. K. Caughey,et al.  A quasi-linear vibration suppression technique for large space structures via stiffness modification , 1985 .

[9]  Andrew M. Beard,et al.  Practical product implementation of an active/passive vibration isolation system , 1994, Optics & Photonics.

[10]  Peter R. Saulson,et al.  Vibration isolation for broadband gravitational wave antennas , 1984 .

[11]  T. K. Caughey,et al.  On the stability problem caused by finite actuator dynamics in the collocated control of large space structures , 1985 .

[12]  Michael J. Brennan,et al.  Instabilities due to instrumentation phase-lead and phase-lag in the feedback control of a simple vibrating system , 2007 .

[13]  Gangbing Song,et al.  Experimental Robustness Study of Positive Position Feedback Control for Active Vibration Suppression , 2002 .

[14]  M. Takasaki,et al.  Vibration isolation system combining zero-power magnetic suspension with springs , 2007 .

[15]  Roger M. Goodall,et al.  Stability control of railway bogies using absolute stiffness: sky-hook spring approach , 2006 .