{
"title": "Modeling and FOS Feedback Based Control of SISO Intelligent Structures with Embedded Shear Sensors and Actuators",
"authors": "T. C. Manjunath, B. Bandyopadhyay",
"country": null,
"institution": null,
"volume": "15",
"journal": "International Journal of Mechanical, Aerospace, Industrial, Mechatronic and Manufacturing Engineering",
"pagesStart": 355,
"pagesEnd": 375,
"ISSN": "1307-6892",
"URL": "http:\/\/waset.org\/publications\/14162",
"abstract": "Active vibration control is an important problem in\r\nstructures. The objective of active vibration control is to reduce the vibrations of a system by automatic modification of the system-s\r\nstructural response. In this paper, the modeling and design of a fast\r\noutput sampling feedback controller for a smart flexible beam system embedded with shear sensors and actuators for SISO system using\r\nTimoshenko beam theory is proposed. FEM theory, Timoshenko beam theory and the state space techniques are used to model the\r\naluminum cantilever beam. For the SISO case, the beam is divided into 5 finite elements and the control actuator is placed at finite\r\nelement position 1, whereas the sensor is varied from position 2 to 5, i.e., from the nearby fixed end to the free end. Controllers are\r\ndesigned using FOS method and the performance of the designed FOS controller is evaluated for vibration control for 4 SISO models\r\nof the same plant. The effect of placing the sensor at different locations on the beam is observed and the performance of the\r\ncontroller is evaluated for vibration control. Some of the limitations of the Euler-Bernoulli theory such as the neglection of shear and\r\naxial displacement are being considered here, thus giving rise to an accurate beam model. Embedded shear sensors and actuators have\r\nbeen considered in this paper instead of the surface mounted sensors\r\nand actuators for vibration suppression because of lot of advantages. In controlling the vibration modes, the first three dominant modes of\r\nvibration of the system are considered.",
"references": null,
"publisher": "World Academy of Science, Engineering and Technology",
"index": "International Science Index 15, 2008"
}