Experimental Study on Vibration Control of Shape Memory Alloy Actuated Flexible Beam
نویسندگان
چکیده
This paper describes the development of an experimental platform which analyzes and controls the vibration of a Shape Memory Alloy (SMA) actuated and piezo sensed flexible beam. The vibration is controlled using the interactive force of a pair of almost identical SMA wires connected in an antagonistic manner, arranged in parallel to and on both sides of the cantilever beam structure. Data acquisition and control are implemented using a PCI data acquisition card and LabVIEW. Standard P, PI, ON-OFF controllers have been used to control the first mode of vibration of the flexible beam. Experimental results are used to demonstrate the effectiveness of the controllers designed and usefulness of the proposed test platform by exciting the structure at resonance.
منابع مشابه
Nonlinear Analysis of a Flexible Beam Actuated by a Couple of Active SMA Wire Actuators
There are two different ways of using SMA wires as actuators for shape control of flexible structures; which can be either embedded within the composite laminate or externally attached to the structure. Since the actuator can be placed at different offset distances from the beam, external actuators produce more bending moment and, consequently, considerable shape changes with the same magnitude...
متن کاملAdaptive Tunable Vibration Absorber using Shape Memory Alloy
This study presents a new approach to control the nonlinear dynamics of an adaptive absorber using shape memory alloy (SMA) element. Shape memory alloys are classified as smart materials that can remember their original shape after deformation. Stress and temperature-induced phase transformations are two typical behaviors of shape memory alloys. Changing the stiffness associated with phase tran...
متن کاملOn the Desing and Test of a Prototype of Biped Actuated by Shape Memory Alloys
In this paper the design of a biped robot actuated with Shape Memory Alloy (SMA) springs with minimum degrees of freedom is presented. SMA springs are a class of smart materials that are known for their high power to mass and volume ratios. It was shown that utilizing spring type of SMAs have many advantages as large deformation, smooth motion, silent and clean movement compared to ordinary typ...
متن کاملNonlinear Buckling and Post-buckling of Shape Memory Alloy Shallow Arches
In this work, the nonlinear buckling and post-buckling behavior of shallow arches made of Shape Memory Alloy (SMA) is investigated. Arches are susceptible to large deflections, due to their slenderness, especially when the external load exceeds the serviceability limit point. Beyond this, loss of stability may occur, the famous snap-through buckling. For this reason, curved beams can be used in...
متن کاملControl of Shape Memory Alloy Actuated Flexible Needle Using Multimodal Sensory Feedbacks
In this paper, closed loop nonlinear control of a shape memory alloy (SMA) actuated flexible needle is presented. Merits of different modalities of sensory feedbacks are studied. In order to track the given desired trajectory, the actual position of the needle tip is controlled using three different feedback signals (i) Vision, (ii) Electromagnetic (EM), and (iii) Ultrasound (US) imaging feedba...
متن کامل