Spatial Filtering for the Control of Smart Structures

1. Front Matter

   Pages i-xv

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2. Smart Structure Systems

   • James E. Hubbard Jr

   Pages 1-24

3. Spatial Shading of Distributed Transducers

   • James E. Hubbard Jr

   Pages 25-67

4. Active Vibration Control with Spatially Shaded Distributed Transducers

   • James E. Hubbard Jr

   Pages 69-99

5. Multi-Dimensional Transforms and MIMO Representations of Smart Structures

   • James E. Hubbard Jr

   Pages 101-119

6. Performance Measures for Smart Structures with MIMO Representations

   • James E. Hubbard Jr

   Pages 121-144

7. Shape Control: Distributed Transducer Design

   • James E. Hubbard Jr

   Pages 145-166

8. Shape Control, Modal Representations and Truncated Plants

   • James E. Hubbard

   Pages 167-197

9. Back Matter

   Pages 199-209

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What follows is my personal perspective on early events that played a signi?cant role in the formation of the ?eld now known as Smart Structures. It is by no means meant to be all inclusive or de?nitive in any way, but merely an account of personal experiences that ultimately lead to the development of the material contained and presented herein. On March 23, 1983 then President Ronald Reagan announced his intentions to develop a new system to reduce the threat of nuclear attack and end the strategy of mutual deterrence in an address to the nation entitled, Address to the Nation on Defense and National Security. The system he proposed became known as “Star Wars,” after the popular movie, because it was meant to provide a protective shield over the nation from space. His speech mobilized the entire nation on a research and development path toward this end. Investigations were conducted into new areas such as space based radar, large aperture antennae and large ?exible mirror concepts. These proposed systems r- resented an entirely new class of structures that proved to provide new challenges in materials, structures, control systems and modeling. For example antennae needed to monitor large areas of real estate in the continental United States required ap- tures on the order of 100 m.

• Active vibration control
• Distributed parameter systems
• Mimo control of spatially distributed systems
• Shape control
• Smart Structure design and analysis
• Smart materials
• Space-time filters
• Spatial fi
• control
• control system
• filtering
• smart material

From the reviews:

“This book puts forward the author’s … unique experience, views, and contributions to the development of spatial filtering concepts and designs for the control of distributed flexible structures. … The book is written in a clear and concise fashion … and is a ‘must-have’ book for anyone seeking to expand their knowledge on the origins, developments, and state-of-the-art on transducer design and spatial filtering concepts for the control of smart material systems and structures.” (César M. A. Vasques, International Journal of Acoustics and Vibration, Vol. 16 (3), 2011)

• National Institute of Aerospace, Hampton, U.S.A.

  James E. Hubbard

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