Stability analysis of a non-minimum phase Electro-Hydraulic Servo System (EHSS) and identification of parametric uncertainty
This thesis is submitted in partial fulfilment of the requirements for the degree of Master of Science in Electrical and Electronic Engineering, 2021.
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Brac University
2022
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| Acceso en liña: | http://hdl.handle.net/10361/16367 |
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10361-163672022-03-01T21:01:34Z Stability analysis of a non-minimum phase Electro-Hydraulic Servo System (EHSS) and identification of parametric uncertainty Ahmed, Mazid Ishtique Azad, A.K.M. Abdul Malek Department of Electrical and Electronic Engineering, BRAC University EHSS NMP DLQR Uncertainties Robust Active suspension Hydraulic servomechanisms. Control system This thesis is submitted in partial fulfilment of the requirements for the degree of Master of Science in Electrical and Electronic Engineering, 2021. Cataloged from PDF version of thesis. Includes bibliographical references (pages 70-78). The electro-hydraulic servo system (EHSS) is a common tool in a variety of modern-day industrial applications that mostly deal with aviation and vehicle manufacturing and operation. In this thesis, an electro-hydraulic servo system is presented which bears the characteristics of non-minimum phase (NMP) phenomenon. A discrete-time transfer function for investigating the EHSS-NMP features has been estimated using a revamped mathematical model of the EHSS with respect to existing model parameters. An optimal control strategy is then formulated based on discrete linear quadratic regulator (DLQR) that seemingly, optimizes the control issues associated with EHSS affected by NMP behavior. A comparative analysis shows that the EHSS stability response improves with the DLQR, but the NMP behavior still persists. This thesis also tries to identify parametric uncertainties through a comprehensive mathematical model of EHSS. The modeling constraints are then investigated to propose a finite frequency robust control technique to actuate an active suspension load subjected to road disturbances. Using various performance criteria, simulation results are able to determine an optimum trade-off between robust control and rejecting road disturbances at higher deflection frequencies. As a result, these studies have demonstrated that the proposed control technique may overcome the parametric uncertainties of an EHSS-driven active suspension load. Mazid Ishtique Ahmed M. Electrical and Electronic Engineering 2022-03-01T05:20:44Z 2022-03-01T05:20:44Z 2021 2021-12 Thesis ID 12261002 http://hdl.handle.net/10361/16367 en Brac University theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. 84 pages application/pdf Brac University |
| institution |
Brac University |
| collection |
Institutional Repository |
| language |
English |
| topic |
EHSS NMP DLQR Uncertainties Robust Active suspension Hydraulic servomechanisms. Control system |
| spellingShingle |
EHSS NMP DLQR Uncertainties Robust Active suspension Hydraulic servomechanisms. Control system Ahmed, Mazid Ishtique Stability analysis of a non-minimum phase Electro-Hydraulic Servo System (EHSS) and identification of parametric uncertainty |
| description |
This thesis is submitted in partial fulfilment of the requirements for the degree of Master of Science in Electrical and Electronic Engineering, 2021. |
| author2 |
Azad, A.K.M. Abdul Malek |
| author_facet |
Azad, A.K.M. Abdul Malek Ahmed, Mazid Ishtique |
| format |
Thesis |
| author |
Ahmed, Mazid Ishtique |
| author_sort |
Ahmed, Mazid Ishtique |
| title |
Stability analysis of a non-minimum phase Electro-Hydraulic Servo System (EHSS) and identification of parametric uncertainty |
| title_short |
Stability analysis of a non-minimum phase Electro-Hydraulic Servo System (EHSS) and identification of parametric uncertainty |
| title_full |
Stability analysis of a non-minimum phase Electro-Hydraulic Servo System (EHSS) and identification of parametric uncertainty |
| title_fullStr |
Stability analysis of a non-minimum phase Electro-Hydraulic Servo System (EHSS) and identification of parametric uncertainty |
| title_full_unstemmed |
Stability analysis of a non-minimum phase Electro-Hydraulic Servo System (EHSS) and identification of parametric uncertainty |
| title_sort |
stability analysis of a non-minimum phase electro-hydraulic servo system (ehss) and identification of parametric uncertainty |
| publisher |
Brac University |
| publishDate |
2022 |
| url |
http://hdl.handle.net/10361/16367 |
| work_keys_str_mv |
AT ahmedmazidishtique stabilityanalysisofanonminimumphaseelectrohydraulicservosystemehssandidentificationofparametricuncertainty |
| _version_ |
1814309502217879552 |