H infinity Control Design for a Magnetostrictive Transducer

Abstract

Magnetostrictive transducers are becoming increasingly prevalent in industrial applications including high speed milling and hybrid motor design due to their broadband, large force capabilities. To achieve the level of performance required by such applications, however, these transducers must operate in nonlinear and hysteretic regimes. To accommodate this nonlinear behavior, models and control laws must incorporate known physics and be sufficiently robust to operate under realistic operating conditions. We develop here an H infinity robust control design for a prototypical magnetostrictive transducer but note that the design is sufficiently general to be utilized for several commonly used smart materials including piezoceramics and shape memory alloys. The performance of the control strategy is illustrated through a numerical example.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2003
Accession Number
ADA451951

Entities

People

  • James Nealis
  • Ralph C. Smith

Organizations

  • North Carolina State University

Tags

Communities of Interest

  • C4I
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Closed Loop Systems
  • Computations
  • Control Systems
  • Design Criteria
  • Differential Equations
  • Domain Walls
  • Filters
  • Free Energy
  • Frequency
  • Magnetization
  • Magnets
  • Materials
  • Open Loop Systems
  • Permanent Magnets
  • Shape Memory Alloys
  • Transducers
  • Weighting Functions

Readers

  • Distributed Systems and Data Platform Development
  • Materials Science and Engineering.
  • Mathematical Modeling and Probability Theory.