Measurement and control of flexible structures using distributed sensors

1990 ◽  
Author(s):  
D.K. Lindner ◽  
K.M. Reichard ◽  
W.T. Baumann ◽  
M.F. Barsky
Keyword(s):  
Flexible Structures ◽  
Distributed Sensors ◽  
And Control ◽  
Measurement And Control

Active Control of a Plate Using Segmented Distributed Sensors and Actuators: Finite Element Development and Analysis

1991 ◽  
Author(s):  
H. S. Tzou ◽  
H. Bahrami
Keyword(s):  
Finite Element ◽  
Active Control ◽  
Variational Equation ◽  
Flexible Structures ◽  
Monitoring And Control ◽  
Sensors And Actuators ◽  
Distributed Sensors ◽  
Computation Efficiency ◽  
Piezoelectric Structure ◽  
And Control

Abstract Distributed sensing and control of flexible structures have drawn much attention in recent years. Piezoelectric elements can be used with an elastic structure as sensors and actuators for structural monitoring and control applications. This paper presents a development of a thin piezoelectric finite element applied to active control of flexible structures. A piezoelectric finite element is derived using the variational equation and Hamilton’s principle. System equations of a piezoelectric structure are formulated accordingly. Guyan’s reduction technique is incorporated to improve the computation efficiency. Feedback control algorithms are also derived and implemented in the finite element code. Applications of the technique to a plate with segmented distributed sensora/actuators are studied and effectiveness evaluated.

Piezoelectricity and Its Use in Disturbance Sensing and Control of Flexible Structures: A Survey

1994 ◽  
Vol 47 (4) ◽  
pp. 113-123 ◽  
Author(s):  
S. S. Rao ◽  
M. Sunar
Keyword(s):  
Piezoelectric Materials ◽  
Integrated Control ◽  
Flexible Structures ◽  
Distributed Sensing ◽  
Vibration Measurement ◽  
Response Monitoring ◽  
Effective Control ◽  
Survey Paper ◽  
And Control ◽  
Measurement And Control

Piezoelectric materials are being used at an increasing rate by researchers in the areas of vibration, measurement and control. Due to their distinct features, these materials can be employed in the distributed sensing and control of intelligent structures that have a highly integrated control architecture. By employing piezoelectric materials, it is feasible to achieve an accurate response monitoring and effective control of flexible structures. In this survey paper, the recent research trends addressing piezoelectricity in the context of distributed sensing and control of flexible structures are discussed. A brief history of piezoelectricity is also noted.

2. Measurement and Control of Airborne Microorganisms Using Electrostatic Methods

2001 ◽  
Author(s):  
G. Mainelis ◽  
R. Gorny ◽  
K. Willeke ◽  
S. Grinshpun ◽  
T. Reponen ◽  
...  
Keyword(s):  
Airborne Microorganisms ◽  
And Control ◽  
Measurement And Control
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