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1 edition of Active damping control of a flexible space structure using piezoelectric sensors and actuators found in the catalog.

Active damping control of a flexible space structure using piezoelectric sensors and actuators

Scott M. Newman

Active damping control of a flexible space structure using piezoelectric sensors and actuators

by Scott M. Newman

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  • 11 Currently reading

Published by Naval Postgraduate School, Available from National Technical Information Service in Monterey, Calif, Springfield, Va .
Written in English


Edition Notes

ContributionsAgrawal, Brij N.
The Physical Object
Pagination66 p. ;
Number of Pages66
ID Numbers
Open LibraryOL25461936M

  The active vibration control of all kinds of structures by using the piezoelectric material has been extensively investigated. In this paper, the active aeroelastic flutter characteristics and vibration control of supersonic beams applying the piezoelectric material are studied further. Active vibration damping is implemented using a positive position feedback controller. Frequency response curves for different controller frequencies, controller damping ratio, and feedback gain demonstrate that the embedded shear actuator can be used for active damping of Cited by:

This paper proposes an innovative mechatronic piezo-actuated module to control vibrations in modern machine tools. Vibrations represent one of the main issues that seriously compromise the quality of the workpiece. The active vibration control (AVC) device is composed of a host part integrated with sensors and actuators synchronized by a regulator; it is able to make a self-assessment and Cited by: by the implementation of active damping. Using current technology, piezo- electric actuators can help decrease the system lag caused by non-rigid structures. By writing the flight control software to include the active control circuit, it is possible to reduce the structural influence on the response of the aircraft.

Incorporating the piezoelectric effect into classical laminate plate theory, distributed sensors and actuators capable of sensing and controlling the modal vibration of a one‐dimensional cantilever plate are derived theoretically and verified experimentally. It is shown that critical damping of a particular mode can be achieved using such a modal sensor/actuator combination as long as the Cited by: Using Collocated Piezoelectric Sensors and Actuators by Cagri Abdullah Savran Submitted to the Department of Mechanical Engineering on May 5, , in partial fulfillment of the requirements for the degree of Master of Science in Mechanical Engineering Abstract This thesis presents active structural control experiments performed on a model fuselage.


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Active damping control of a flexible space structure using piezoelectric sensors and actuators by Scott M. Newman Download PDF EPUB FB2

This banner text can have markup. web; books; video; audio; software; images; Toggle navigation. A method for optimal positioning of piezoelectric actuators and sensors on a flexible structure is presented. First, a two-dimensional (2-D) model of a piezoelectric actuator bonded to a plate is.

In this section, a mathematical model is derived for flexible beam structure equipped with an acceleration sensor and PZT actuator. The schematic diagram of the piezoelectric adaptive flexible uniform slender beam is shown in Fig.an accelerometer and one PZT patch are used as sensors, and four other PZT patches bonded perfectly and symmetrically on the top and the bottom surfaces of Cited by:   Thesis advisor, B.N.

AgrawalPages: Specific applications are developed using piezoelectric actuators for active vibration control of buildings [5], gear box [6] [7] [8], flexibility of car body [9], space truss structures [10] [   In all these references, only a single piezoelectric actuator is employed in the control scheme; fewer contributions are available concerning the use of multiple piezoelectric sensors and actuators.As a matter of fact, the use of multiple sensors and actuators is important to effectively control complex structures with several vibration modes, where the use of a single sensor and actuator Cited by: The apparatus consists of a voltage amplifier and a data acquisition and real-time control system, in addition to the composite beam with bonded piezoelectric ceramic sensors and actuators.

Experiments show that the proposed controllers can achieve active vibration damping of the composite beam. Design of Passive Piezoelectric Damping for Space Structures Collocation: 1. collocated actuators and sensors are located at same point on the structure. Within active control systems, the piezoelectrics require complex amplifiers and associated sensing electronics.

These can be eliminated in passive shunting applications where the. Abstract. Actuators play a critical role in active structures technology and, in many cases, they constitute the limiting broad categories can be distinguished: ”grounded” and ”structure borne” former react on a fixed support; they include torque motors, force motors (electrodynamic shakers) or second category, also called ”space realizable Author: André Preumont.

Piezoelectric unimorph deformable mirrors offer a cheap solution to adaptive optics, with mass production capability. However, standard solutions have significant drawbacks: (i) the static shape is sensitive to the temperature, and (ii) the low structural damping limits the control bandwidth, because of the interaction between the shape control and the vibration modes of the : Kainan Wang, David Alaluf, André Preumont.

Piezoelectric Material Active Structure Piezoelectric Actuator Vibration Control Frequency Response Function These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Active damping systems require sensors and actuators, a source of power, and a compensator that performs well under vibration. The most commonly used active damping system is material actuators using piezoelectric materials. Piezoelectrics have a recoverable strain of % under an electric field.

There are two broad classes of piezoelectric. Active control was tested for piezoblade damping (S. Livet, ). Al excitation by a piezoelectric actuator Pt: piezoelectric actuator â P2 piezoelectric sensor: Used. a typical active control law (PD control) and achieved ^ = %.

Active Control. Colocalised Study Slglab box Computer for signal observation Laser Blade P1 Al 1 ^IP2 File Size: 7MB. Key-Words: Satellite panels, Active vibration control, Piezoelectric actuators and sensors, optimal control law 1 Introduction Spacecrafts with flexible appendages, in orbiting, are important for the purpose of communication, remote sensing and variety of space-related research activities.

Such spacecrafts have a central rigid body. Therefore, in the electrical domain the piezo element may be seen as a capacitor C p in series with a voltage source, of which the voltage is induced by the external forces acting on the piezo element.

This allows using a piezo element as a force sensor. By connecting the piezoelectric element in a capacitive bridge circuit, as first described in [], the sensing capabilities can be combined Cited by: Structure borne noise often has undesirable effects on sensitive electrical components mounted to flexible circuit boards and the attenuation of this noise is essential for proper functionality.

In this work, a bender-type piezoelectric active resonator absorber (ARA) is presented for harvesting this undesirable mechanical energy from small, flexible structures. The application of. Piezoelectric actuators are used for active vibration damping in mechanical structures where vibrations are undesirable.

Vibration damping can be designed to reduce noise, fuel consumption and energy waste. The reduction of sound levels in helicopter structures has drawn a lot of interest recently, however the technology can be applied to other.

A STUDY ON PIEZOELECTRIC ACTUATORS AND SENSORS FOR VIBRATION CONTROL OF FLEXIBLE SPACE STRUCTURES by Franklin augh Lieutenant, United States Navy B.S., Auburn University, Alabama, Submitted in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE IN SYSTEMS TECHNOLOGY (SPACE SYSTEMS OPERATIONS) from the.

An experimental study for the active vibration control of structures subject to external excitations using piezoelectric sensors and actuators is presented.

A simply supported plate and a curved panel are used as the controlled structures in two experiments, by: 8. Applying this method, locations of piezoelectric actuators on flexible structures are optimized.

Very few experimental studies exist on shape and vibration control of structures. To the best knowledge of the author, optimal actuator placement in shape control has not been experimentally studied in the by: 4.

Application of H∞ control for multimodal vibration suppression of a slewing spacecraft using piezoelectric actuators is presented in this paper. For treating vibration suppression independent of attitude control law while taking into account relative modal responses; a method for modeling effect of attitude maneuver excitations as modal disturbances is by: 2.

Damping is increased anywhere from to 3 orders of magnitude. Different poling arrangements for the piezoelectric sensors and actuators have been studied to obtain maximum sensitivity to the type of stress and strain fields in the vibrating structure under by: 1.

Active vibration control of piezoelectric laminated beams with electroded actuators and sensors using an efficient finite element involving an electric node. S Kapuria 1 and M Yaqoob Yasin. Published 16 March • IOP Publishing Ltd Smart Materials and Structures, Vol Number 4.