Active Vibration Suppression of Nonlinear Cantilever Beam using Shape Memory Alloy Actuators

Vishal, Prateek and Kaliperumal, Dhanalakshmi and Padhi, Radhakant (2018) Active Vibration Suppression of Nonlinear Cantilever Beam using Shape Memory Alloy Actuators. In: 5th IFAC Conference on Advances in Control and Optimization of Dynamical Systems (ACODS), FEB 18-22, 2018, Hyderabad, INDIA, pp. 130-135.

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Abstract

This paper presents the active vibration suppression of a cantilever beam using shape memory alloy (SMA) wires as actuator. The cantilever beam is modelled as a nonlinear distributed parameter system (DPS) following the Euler Bernoulli Beam theory. Sensors and actuators are optimally placed at discrete locations along the cantilever beam. Controllability Gramians are evaluated to determine the optimal locations for the actuator placement. Modal analysis is used to determine the optimal locations for the sensor placement. The desired system response is obtained by designing a nonlinear controller using the concepts of dynamic inversion and optimal control. This methodology is based on the Design Then Approximate (DTA) philosophy. Optimal Dynamic Inversion is used as the control technique to ensure suppression of vibration along the length of the beam. This approach of control design can be used for any randomly generated initial profile of the beam. Experimental setup is designed using discrete sensors such as LASER sensor and Piezoelectric Sensor and the actuation is done using SMA based wire actuators. The control algorithm is verified experimentally and theoretically for vibration suppression. (C) 2018, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved.

Item Type:	Conference Proceedings
Publication:	IFAC PAPERSONLINE
Publisher:	ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Additional Information:	Copyright of this article belong to ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	13 Aug 2018 15:31
Last Modified:	12 Oct 2018 11:31
URI:	http://eprints.iisc.ac.in/id/eprint/60417

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