Servo valve-line hydraulic system
The objective of this project is to analyze the effects of electrohydraulic system due to hydraulic parametric variation by using control theory and mathematical modelling technique. The electrohydraulic system in this project consists of hydraulic pump, pipeline, servovalve, accumulator and variabl...
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| Format: | Final Year Project (FYP) |
| Language: | English |
| Published: |
2009
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| Online Access: | http://hdl.handle.net/10356/15742 |
| _version_ | 1824454590244847616 |
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| author | Ong, Jia Xian. |
| author2 | Ang Hock Eng |
| author_facet | Ang Hock Eng Ong, Jia Xian. |
| author_sort | Ong, Jia Xian. |
| collection | NTU |
| description | The objective of this project is to analyze the effects of electrohydraulic system due to hydraulic parametric variation by using control theory and mathematical modelling technique. The electrohydraulic system in this project consists of hydraulic pump, pipeline, servovalve, accumulator and variable orifice.
There are 5 different cases of hydraulic systems to be analyzed using lumped parameter analysis approach. The response of the hydraulic system subjected to step input and different variation of physical parameters, such as the length of pipeline and the load on variable orifice, was performed and studied.
By using Matlab simulation, step response analysis, root locus analysis, Bode diagram, and Nyquist plot were applied to the system. Lastly, recommendation for response improvement was carried out by adding a designed controller to the hydraulic system. In this project, SISO design tool is successfully applied to improve the response.
Based on the results, it is found that the system’s stability is highly related the length of the pipeline. Load on variable orifice which is caused by varying the diameter of orifice, and is found to contribute little effect on the response’s stability. Meanwhile, during the supply breakout, accumulator is proven to maintain good stability of the system by absorbing the pressure shock and vibration efficiently. |
| first_indexed | 2025-02-19T03:24:44Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/15742 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:24:44Z |
| publishDate | 2009 |
| record_format | dspace |
| spelling | ntu-10356/157422023-03-04T18:22:14Z Servo valve-line hydraulic system Ong, Jia Xian. Ang Hock Eng School of Mechanical and Aerospace Engineering DRNTU::Engineering::Mechanical engineering::Fluid mechanics The objective of this project is to analyze the effects of electrohydraulic system due to hydraulic parametric variation by using control theory and mathematical modelling technique. The electrohydraulic system in this project consists of hydraulic pump, pipeline, servovalve, accumulator and variable orifice. There are 5 different cases of hydraulic systems to be analyzed using lumped parameter analysis approach. The response of the hydraulic system subjected to step input and different variation of physical parameters, such as the length of pipeline and the load on variable orifice, was performed and studied. By using Matlab simulation, step response analysis, root locus analysis, Bode diagram, and Nyquist plot were applied to the system. Lastly, recommendation for response improvement was carried out by adding a designed controller to the hydraulic system. In this project, SISO design tool is successfully applied to improve the response. Based on the results, it is found that the system’s stability is highly related the length of the pipeline. Load on variable orifice which is caused by varying the diameter of orifice, and is found to contribute little effect on the response’s stability. Meanwhile, during the supply breakout, accumulator is proven to maintain good stability of the system by absorbing the pressure shock and vibration efficiently. Bachelor of Engineering (Mechanical Engineering) 2009-05-14T03:38:24Z 2009-05-14T03:38:24Z 2009 2009 Final Year Project (FYP) http://hdl.handle.net/10356/15742 en Nanyang Technological University 107 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Mechanical engineering::Fluid mechanics Ong, Jia Xian. Servo valve-line hydraulic system |
| title | Servo valve-line hydraulic system |
| title_full | Servo valve-line hydraulic system |
| title_fullStr | Servo valve-line hydraulic system |
| title_full_unstemmed | Servo valve-line hydraulic system |
| title_short | Servo valve-line hydraulic system |
| title_sort | servo valve line hydraulic system |
| topic | DRNTU::Engineering::Mechanical engineering::Fluid mechanics |
| url | http://hdl.handle.net/10356/15742 |
| work_keys_str_mv | AT ongjiaxian servovalvelinehydraulicsystem |