Piezoelectric Actuator-Active Vibration Control of the Shaft Line for a Gas Turbine Engine Test Stand

Palazzolo, Alan; Jagannathan, Shankar; Kascak, Albert F.; Griffin, Tim; Giriunas, J.; Montague, Gerald T.

doi:10.1115/93-gt-262

Cited by 4 publications

(3 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Similarly, manufacturer speci ed values for d 31 can be found for various piezoceramic materials and hence the analytic moments generated by the patches can be obtained from (2.4). The speci ed values for d 31 can vary by batch, however, and the static values listed by manufacturers are often signi cantly larger than the actual values obtained in dynamic experiments 15,19,20]. Finally, the strain output for the patches often decays over time which is manifested in the moment expression (2.4) by a decrease in d 31 .…”

Section: Strong Form Of the Plate Equationmentioning

confidence: 99%

“…While di erences occur between the \handbook" values of the Young's modulus and Poisson ratio and the \true" parameters for the experimental patch, perhaps the biggest source of variation occurs in the values for the strain constant d 31 . The value reported in the product literature (and given in Table 1) was obtained through static tests while the estimated value is obtained in a dynamic setting which tends to decrease the realized values of strain parameters such as d 31 15,19,20]. Hence while the analytic values given by the model (2.5) can be used as starting values in the optimization routine, they will not in general yield an accurate model response due to physical variations in the material patch properties.…”

Section: Example 4: Axisymmetric Excitation { Voltage Spike To Patchmentioning

confidence: 99%

See 1 more Smart Citation

The Estimation of Material and Patch Parameters in a Pde-Based Circular Plate Model

Banks

Smith

Brown

et al. 1997

Journal of Sound and Vibration

View full text Add to dashboard Cite

The estimation of material and patch parameters for a system involving a circular plate, to which piezoceramic patches are bonded, is considered. A partial di erential equation (PDE) model for the thin circular plate is used with the passive and active contributions from the patches included in the internal and external bending moments. This model contains piecewise constant parameters describing the density, exural rigidity, Poisson ratio and Kelvin-Voigt damping for the system as well as patch constants and a coe cient for viscous air damping. Examples demonstrating the estimation of these parameters with experimental acceleration data and a variety of inputs to the experimental plate are presented. By using a physicallyderived PDE model to describe the system, parameter sets consistent across experiments are obtained, even when phenomena such as damping due to electric circuits a ect the system dynamics.

show abstract

Section: Strong Form Of the Plate Equationmentioning

confidence: 99%

Section: Example 4: Axisymmetric Excitation { Voltage Spike To Patchmentioning

confidence: 99%

The Estimation of Material and Patch Parameters in a Pde-Based Circular Plate Model

Banks

Smith

Brown

et al. 1997

Journal of Sound and Vibration

View full text Add to dashboard Cite

show abstract

“…Esto se consigue mediante un control activo de la aceleración (Zhu and Tryggvason, 2004). El control de la vibración incluye actuadores (piezoeléctricos, materiales inteligentes, etc) que permiten aplicacio-nes como el eje de una turbina (Palazzolo et al, 1993), estructuras espaciales inflables (Kamel and He, 2010) y estructuras espacialesópticas (Bronowicki et al, 1999).…”

Section: Aplicaciones Del Control Activo-semiactivo En Otrasáreas De unclassified

Los Sistemas de Suspensión Activa y Semiactiva: Una Revisión

Hurel

Mandow

García-Cerezo

2013

Revista Iberoamericana de Automática e Informática Industrial R

View full text Add to dashboard Cite

El propósito de este artículo es efectuar una revisión del estado del conocimiento en el modelado y control de los sistemas de suspensión activa y semiactiva. Se analizan las principales características de los diferentes tipos de sistemas de suspensión: pasiva, activa y semiactiva. Respecto al modelado y simulación de los sistemas de suspensión, se examinan los distintos enfoques, herramientas y aplicaciones en el contexto de la dinámica vehicular. Además, para el modelo de un cuarto de vehículo, ampliamente utilizado en la literatura, se ofrece su desarrollo mediante ecuaciones diferenciales, función de transferencia, y ecuaciones de estado, incluyendo soluciones y simulaciones en Simulink y SimMechanics. En cuanto al control, se revisan las principales estrategias para la suspensión de vehículos y se apuntan aplicaciones en otros campos de la ingeniería.

show abstract

Vibration Control in Ship Structures

Koko

Akpan

Berry

et al. 2002

Encyclopedia of Smart Materials

View full text Add to dashboard Cite

The dominant sources of noise radiation in water are from ship engines and machinery—the propeller cavitation noise, the noise radiation from propeller blades, and the hydrodynamic pressure fluctuations induced by turbulent water flow along the ship's hull. At speeds below propeller cavitation inception, a ship's acoustic signature is generally dominated by structurally transmitted noise from onboard machinery. Reduction or control of ship noise has traditionally been implemented by passive means, such as by the use of vibration isolation mounts, flexible pipe‐work, and interior acoustic absorbing materials. However, these passive noise control techniques are effective mostly for attenuating high‐frequency noise; they are generally ineffective for controlling low‐frequency noise. There are, on the other hand, active noise control methods that have been proven to be effective in controlling low‐frequency and tonal noise. These active control methods could be used instead of, or in combination with, passive techniques, for controlling or reducing ship noise. Active noise control (ANC) involves the reduction or elimination of noise by modification of the dynamic properties of a system or by noise cancellation through linear superposition of a secondary noise field of equal but opposite strength. An active noise control system will typically consist of all or some of the following ingredients: sensors, actuators, and controllers.

show abstract

Piezoelectric Actuator-Active Vibration Control of the Shaft Line for a Gas Turbine Engine Test Stand

Cited by 4 publications

References 8 publications

The Estimation of Material and Patch Parameters in a Pde-Based Circular Plate Model

The Estimation of Material and Patch Parameters in a Pde-Based Circular Plate Model

Los Sistemas de Suspensión Activa y Semiactiva: Una Revisión

Vibration Control in Ship Structures

Contact Info

Product

Resources

About