Boundary-controlled travelling and standing waves in cascaded lumped systems

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Title: Boundary-controlled travelling and standing waves in cascaded lumped systems
Authors: O'Connor, William
Zhu, Ming
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Date: May-2012
Online since: 2013-01-11T15:33:24Z
Abstract: This paper shows how pure travelling waves in cascaded, lumped, uniform, mass-spring systems can be defined, established, and maintained, by controlling two boundary actuators, one at each end. In most cases the control system for each actuator requires identifying and measuring the notional component waves propagating in opposite directions at the actuator-system interfaces. These measured component waves are then used to form the control inputs to the actuators. The paper also shows how the boundaries can be actively controlled to establish and maintain standing waves of arbitrary standing wave ratio, including those corresponding to the classical modes of vibration of such systems with textbook boundary conditions. These vibration modes are achieved and maintained by controlled reflection of the pure travelling wave components. The proposed control systems are also robust to system disturbances: they react to overcome external disturbances quickly and so to re-establish the desired steady motion.
Type of material: Conference Publication
Publisher: Elsevier
Copyright (published version): 2012 Elsevier B.V.
Keywords: Control flexible systemsBoundary controlWaves in mechanical systemsWave-based control
Language: en
Status of Item: Not peer reviewed
Conference Details: The Second Joint International Conference on Multibody System Dynamics: Stuttgart, Germany, May 29 - June 1, 2012
Appears in Collections:Mechanical & Materials Engineering Research Collection

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