{"title":"Control of Vibrations in Flexible Smart Structures using Fast Output Sampling Feedback Technique","authors":"T.C. Manjunath, B. Bandyopadhyay","country":null,"institution":"","volume":10,"journal":"International Journal of Mechanical and Mechatronics Engineering","pagesStart":3128,"pagesEnd":3143,"ISSN":"1307-6892","URL":"https:\/\/publications.waset.org\/pdf\/540","abstract":"This paper features the modeling and design of a Fast\r\nOutput Sampling (FOS) Feedback control technique for the Active\r\nVibration Control (AVC) of a smart flexible aluminium cantilever\r\nbeam for a Single Input Single Output (SISO) case. Controllers are\r\ndesigned for the beam by bonding patches of piezoelectric layer as\r\nsensor \/ actuator to the master structure at different locations along\r\nthe length of the beam by retaining the first 2 dominant vibratory\r\nmodes. The entire structure is modeled in state space form using the\r\nconcept of piezoelectric theory, Euler-Bernoulli beam theory, Finite\r\nElement Method (FEM) and the state space techniques by dividing\r\nthe structure into 3, 4, 5 finite elements, thus giving rise to three\r\ntypes of systems, viz., system 1 (beam divided into 3 finite\r\nelements), system 2 (4 finite elements), system 3 (5 finite elements).\r\nThe effect of placing the sensor \/ actuator at various locations along\r\nthe length of the beam for all the 3 types of systems considered is\r\nobserved and the conclusions are drawn for the best performance and\r\nfor the smallest magnitude of the control input required to control the\r\nvibrations of the beam. Simulations are performed in MATLAB. The\r\nopen loop responses, closed loop responses and the tip displacements\r\nwith and without the controller are obtained and the performance of\r\nthe proposed smart system is evaluated for vibration control.","references":null,"publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 10, 2007"}