Full linearization of nonlinear flow control valves via variable gear ratio design
Abstract The paper proposes the full linearization of nonlinear characteristics of flow control valves via variable gear ratio design. The inherent nonlinear function of the normalized valve capacity coefficients to the percentages of valve opening is derived from flow experiments. In analysis, it i...
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Nature Portfolio
2024-11-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-024-81002-z |
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| author | Thitipun Thongnueakhaeng Tawat De Haas Thananchai Leephakpreeda |
| author_facet | Thitipun Thongnueakhaeng Tawat De Haas Thananchai Leephakpreeda |
| author_sort | Thitipun Thongnueakhaeng |
| collection | DOAJ |
| description | Abstract The paper proposes the full linearization of nonlinear characteristics of flow control valves via variable gear ratio design. The inherent nonlinear function of the normalized valve capacity coefficients to the percentages of valve opening is derived from flow experiments. In analysis, it is found that the derivative of the inverse function is the reciprocal of the gear ratio, which is used to generate the corresponding driving/driven gear profiles. The rotation of the driven stem of the flow control valve from a driving knob is altered by the variable gear ratio to achieve fully linearized flow characteristics. The experimental results confirm the fully linearized characteristics of a conventional nonlinear flow control valve with correlation to the linearity with R-squared = 0.9984. |
| format | Article |
| id | doaj-art-d0b40a88ac21418e9b5802ce9b03e04b |
| institution | DOAJ |
| issn | 2045-2322 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-d0b40a88ac21418e9b5802ce9b03e04b2025-08-20T02:49:17ZengNature PortfolioScientific Reports2045-23222024-11-011411910.1038/s41598-024-81002-zFull linearization of nonlinear flow control valves via variable gear ratio designThitipun Thongnueakhaeng0Tawat De Haas1Thananchai Leephakpreeda2School of Manufacturing Systems and Mechanical Engineering, Sirindhorn International Institute of Technology, Thammasat UniversitySchool of Manufacturing Systems and Mechanical Engineering, Sirindhorn International Institute of Technology, Thammasat UniversitySchool of Manufacturing Systems and Mechanical Engineering, Sirindhorn International Institute of Technology, Thammasat UniversityAbstract The paper proposes the full linearization of nonlinear characteristics of flow control valves via variable gear ratio design. The inherent nonlinear function of the normalized valve capacity coefficients to the percentages of valve opening is derived from flow experiments. In analysis, it is found that the derivative of the inverse function is the reciprocal of the gear ratio, which is used to generate the corresponding driving/driven gear profiles. The rotation of the driven stem of the flow control valve from a driving knob is altered by the variable gear ratio to achieve fully linearized flow characteristics. The experimental results confirm the fully linearized characteristics of a conventional nonlinear flow control valve with correlation to the linearity with R-squared = 0.9984.https://doi.org/10.1038/s41598-024-81002-zLinear valve characteristicsValve capacity coefficientValve openingFluid mechanicsVariable gear ratio |
| spellingShingle | Thitipun Thongnueakhaeng Tawat De Haas Thananchai Leephakpreeda Full linearization of nonlinear flow control valves via variable gear ratio design Scientific Reports Linear valve characteristics Valve capacity coefficient Valve opening Fluid mechanics Variable gear ratio |
| title | Full linearization of nonlinear flow control valves via variable gear ratio design |
| title_full | Full linearization of nonlinear flow control valves via variable gear ratio design |
| title_fullStr | Full linearization of nonlinear flow control valves via variable gear ratio design |
| title_full_unstemmed | Full linearization of nonlinear flow control valves via variable gear ratio design |
| title_short | Full linearization of nonlinear flow control valves via variable gear ratio design |
| title_sort | full linearization of nonlinear flow control valves via variable gear ratio design |
| topic | Linear valve characteristics Valve capacity coefficient Valve opening Fluid mechanics Variable gear ratio |
| url | https://doi.org/10.1038/s41598-024-81002-z |
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