Active control of mechanical systems - The state-of-the-art for robotic manipulators

Smart Combustors: Just Around the Corner

Volume 2: Turbo Expo 2005 ◽

10.1115/gt2005-69138 ◽

2005 ◽

Cited By ~ 4

Author(s):

Ben T. Zinn

Keyword(s):

Control System ◽

Control Systems ◽

Gas Turbine ◽

Active Control ◽

Health Monitoring ◽

State Of The Art ◽

The State ◽

Research Needs ◽

Combustion Instabilities ◽

Lean Blowout

This paper reviews the state of the art of active control systems (ACS) for gas turbine combustors. Specifically, it discusses the manner in which ACS can improve the performance of combustors, the architecture of such ACS, and the designs and promising performance of ACS that have been developed to control combustion instabilities, lean blowout and pattern factor. The paper closes with a discussion of research needs, with emphasis on the integration of utilized engine ACS, health monitoring and prognostication systems into a single control system that could survive in the harsh combustor environment.

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PZT Sensors and their Application in Structural Health Monitoring

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.128-129.669 ◽

2011 ◽

Vol 128-129 ◽

pp. 669-675 ◽

Cited By ~ 1

Author(s):

Xuan Sun

Keyword(s):

Structural Health Monitoring ◽

Health Monitoring ◽

Lamb Wave ◽

State Of The Art ◽

Research Work ◽

Mechanical Systems ◽

The State ◽

Theoretical Studies ◽

Engineering Systems ◽

Experimental And Theoretical Studies

This paper provides the state of the art in methods to detect damage in structural and mechanical systems by PZT sensors, which include impedance methods and lamb wave propagations. The basic idea behind these technologies is to use impedance of PZT embedded on surface or lamb wave propagations. A brief overview of research work on experimental and theoretical studies on various structures and mechanical systems is descried. Past, current and applications of this technology in actual engineering systems are summarized. Finally, desirable developments for further advancement of this field are discussed.

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Practical Picture Processing

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100051700 ◽

1974 ◽

Vol 32 ◽

pp. 338-339

Author(s):

T. A. Welton

Keyword(s):

Radiation Damage ◽

Coherence Length ◽

Spatial Information ◽

State Of The Art ◽

Coherent Radiation ◽

The State ◽

Energy Spread ◽

Electron Micrograph ◽

Picture Processing ◽

Molecular Skeleton

Various authors have emphasized the spatial information resident in an electron micrograph taken with adequately coherent radiation. In view of the completion of at least one such instrument, this opportunity is taken to summarize the state of the art of processing such micrographs. We use the usual symbols for the aberration coefficients, and supplement these with £ and 6 for the transverse coherence length and the fractional energy spread respectively. He also assume a weak, biologically interesting sample, with principal interest lying in the molecular skeleton remaining after obvious hydrogen loss and other radiation damage has occurred.

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