Model-based active control of a continuous structure subjected to moving loads

Stancioiu, D and Ouyang, H ORCID: 0000-0003-0312-0326 (2016) Model-based active control of a continuous structure subjected to moving loads. .

Text Stancioiu 16 MOVIC2016&RASD2016 MovingLoadControl.pdf - Published version Download (1MB)

Abstract

Modelling of a structure is an important preliminary step of structural control. The main objectives of the modelling, which are almost always antagonistic are accuracy and simplicity of the model. The first part of this study focuses on the experimental and theoretical modelling of a structure subjected to the action of one or two decelerating moving carriages modelled as masses. The aim of this part is to obtain a simple but accurate model which will include not only the structure-moving load interaction but also the actuators dynamics. A small scale rig is designed to represent a four-span continuous metallic bridge structure with miniature guiding rails. A series of tests are run subjecting the structure to the action of one or two minicarriages with different loads that were launched along the structure at different initial speeds. The second part is dedicated to model based control design where a feedback controller is designed and tested against the validated model. The study shows that a positive position feedback is able to improve system dynamics but also shows some of the limitations of state- space methods for this type of system.

Item Type:	Conference or Workshop Item (Unspecified)
Depositing User:	Symplectic Admin
Date Deposited:	23 Jan 2017 09:35
Last Modified:	19 Jan 2023 07:24
DOI:	10.1088/1742-6596/744/1/012001
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3004728