Characteristics of self-sensing actuation for active control

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Description

The benefits of a collocated sensor actuator pair are well known within the controls community. Generally speaking, collocation offers the use of simple control algorithms with reduced instabilities due to spillover. One method for achieving collocation is the implementation of a ``sentuator`` in which a piezoelectric element functions simultaneously as both a sensor and an actuator. Past work in utilizing a sentuator has primarily been limited to piezoelectric films and patches mounted to flexible structures. Additional papers have provided information and methodology for dealing with the non-linear aspects of a piezoceramic sentuator. The need arises for methods of self-sensing when ... continued below

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7 p.

Creation Information

Barney, P.; Redmond, J. & Smith, D. December 31, 1996.

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Authors

  • Barney, P.
  • Redmond, J. Sandia National Labs., Albuquerque, NM (United States). Experimental Structural Dynamics Dept.
  • Smith, D. Univ. of Florida, Gainesville, FL (United States)

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

The benefits of a collocated sensor actuator pair are well known within the controls community. Generally speaking, collocation offers the use of simple control algorithms with reduced instabilities due to spillover. One method for achieving collocation is the implementation of a ``sentuator`` in which a piezoelectric element functions simultaneously as both a sensor and an actuator. Past work in utilizing a sentuator has primarily been limited to piezoelectric films and patches mounted to flexible structures. Additional papers have provided information and methodology for dealing with the non-linear aspects of a piezoceramic sentuator. The need arises for methods of self-sensing when performing active vibration control of very stiff structures. A method for understanding and using self-sensing lead zirconate titanate stacks for active vibration control is presented. This paper specifically provides a basic understanding of self-sensing methods as applied to stiff structures for the purposes of control. The discussion of the methodology is followed by a simple example in which active vibration control is applied to a model of a boring bar with embedded PZT stacks.

Physical Description

7 p.

Notes

OSTI as DE97000760

Source

  • International modal analysis conference, Orlando, FL (United States), 3-6 Feb 1997

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  • Other: DE97000760
  • Report No.: SAND--96-2467C
  • Report No.: CONF-970233--6
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 432963
  • Archival Resource Key: ark:/67531/metadc688472

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Creation Date

  • December 31, 1996

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

Description Last Updated

  • May 5, 2016, 8 p.m.

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Barney, P.; Redmond, J. & Smith, D. Characteristics of self-sensing actuation for active control, article, December 31, 1996; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc688472/: accessed October 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.