MSpace - DSpace at UofM >
Faculty of Graduate Studies (Electronic Theses and Dissertations) >
FGS - Electronic Theses & Dissertations (Public) >

Please use this identifier to cite or link to this item: http://hdl.handle.net/1993/5116

Title: Understanding effect and diagnosis of internal leakage in hydrostatic actuation systems
Authors: Thakur, Amit
Supervisor: Sepehri,Nariman (Mechanical & Manufacturing)
Examining Committee: Balakrishnan, Subramaniam (Mechanical & Manufacturing) Fung, Wai-Keung (Electrical & Computer)
Graduation Date: May 2012
Keywords: Electrohydrotatic
EHA
Issue Date: 27-Jan-2012
Abstract: This research presents implementation of the Wavelet transform for detecting internal leakages occurring within an Electro-Hydrostatic Actuation (EHA) system. Simulation studies are carried out in order to investigate the feasibility of a particular approach and to determine the level of accuracy that can be expected in the experimental system. The effect of friction, orifices and the dynamics of motor/pump are considered during the simulation study. Experimental analysis based on Wavelet transform is conducted for detecting internal leakage. The original pressure signals at either side of the cylinder are decomposed using Wavelet transform to detect internal leakage which is clearly identified. Results obtained through the use of Wavelet transform prove that this method is fast and easily-implementable for leakage detection in EHA on the basis of the pressure data obtained. Internal leakages as low as 0.0042 lit/min are shown to be detectable 85% of the time using a structured input signal.
URI: http://hdl.handle.net/1993/5116
Appears in Collection(s):FGS - Electronic Theses & Dissertations (Public)

Files in This Item:

File Description SizeFormat
Thakur_Amit.pdf18.52 MBAdobe PDFView/Open
View Statistics

Items in MSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! MSpace Software Copyright © 2002-2010  Duraspace - Feedback