Space-based adaptive optic systems have gained considerable attention within the past couple of decades. Achieving the increasingly stringent performance requirements for these systems is greatly hindered by strict weight restrictions, size limitations, and subjected hostile environments. There has been considerable attention in developing lightweight adaptive optics where piezoelectric sheet actuators are attached on the back of optical mirrors to achieve a high precision surface shape with minimum additional weight. Vibration control of such large flexible space structures is continually challenging to engineers due to the large number of actuators and sensors and the large number of vibration modes within the operational bandwidth. For these structures, any disturbed modes are likely to remain vibrating for an extended period of time due to the small amount of damping available. As a result, controller spillover should be minimized as much as possible to avoid exciting the residual modes. In recent investigations of circular plate shape control by [Philen and Wang, Int. Soc. Opt. Eng. 4327, pp. 709–719]. It was demonstrated that directional decoupling of the two-dimensional actuator (meaning that the actuation in one of the two directions is eliminated) improves the system performance when correcting for the lower order Zernike static deformations. This directional decoupling effect can be achieved through an active stiffener (AS) design. In this research, analytical and experimental efforts are carried out to examine the effect of the active stiffener actuators in reducing the controller spillover through the stiffeners’ decoupling characteristics. It is shown that significant reductions in controller spillover can be achieved in systems using the active stiffener actuators when compared to systems having direct attached (DA) actuators, thus resulting in improved vibration control performance. The experimental results verify the analytical predictions and clearly demonstrate the merit of the active stiffener concept.
Skip Nav Destination
Article navigation
October 2005
Technical Papers
Active Stiffeners for Vibration Control of a Circular Plate Structure: Analytical and Experimental Investigations
Michael K. Philen,
Michael K. Philen
Eastman Kodak Fellow
Structural Dynamics and Controls Lab,
The Pennsylvania State University
, University Park, PA 16802
Search for other works by this author on:
K. W. Wang
K. W. Wang
William E. Diefenderfer Chaired Professor in Mechanical Engineering
Structural Dynamics and Controls Lab,
The Pennsylvania State University
, University Park, PA 16802
Search for other works by this author on:
Michael K. Philen
Eastman Kodak Fellow
Structural Dynamics and Controls Lab,
The Pennsylvania State University
, University Park, PA 16802
K. W. Wang
William E. Diefenderfer Chaired Professor in Mechanical Engineering
Structural Dynamics and Controls Lab,
The Pennsylvania State University
, University Park, PA 16802J. Vib. Acoust. Oct 2005, 127(5): 441-450 (10 pages)
Published Online: January 19, 2005
Article history
Received:
August 12, 2003
Revised:
January 19, 2005
Citation
Philen, M. K., and Wang, K. W. (January 19, 2005). "Active Stiffeners for Vibration Control of a Circular Plate Structure: Analytical and Experimental Investigations." ASME. J. Vib. Acoust. October 2005; 127(5): 441–450. https://doi.org/10.1115/1.2013303
Download citation file:
Get Email Alerts
Cited By
Related Articles
Vibration Suppression in Cutting Tools Using a Collocated Piezoelectric Sensor/Actuator With an Adaptive Control Algorithm
J. Vib. Acoust (October,2010)
Active Vibration Control With Modified Positive Position Feedback
J. Dyn. Sys., Meas., Control (July,2009)
A Feedback and Feedforward Vibration Control for a Concrete Placing Boom
J. Vib. Acoust (October,2011)
Self-Sensing Active Magnetic Dampers for Vibration Control
J. Dyn. Sys., Meas., Control (November,2009)
Related Proceedings Papers
Related Chapters
Vibration Control of the Turbine Blade Using Quantitative Feedback Theory
International Conference on Mechanical and Electrical Technology, 3rd, (ICMET-China 2011), Volumes 1–3
Fundamentals of Structural Dynamics
Flow Induced Vibration of Power and Process Plant Components: A Practical Workbook
Engineering Design about Electro-Hydraulic Intelligent Control System of Multi Axle Vehicle Suspension
International Conference on Instrumentation, Measurement, Circuits and Systems (ICIMCS 2011)