The Characteristics Analysis and the Optimization for Close-type Hydrostatic Slideways
| Autor: | Chi-Fu Lee, 李棋富 |
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| Rok vydání: | 2004 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 92 This thesis studies the characteristics of the externally pressurized, with multi-recessed, close-type, flat hydrostatic slideways by using the membrane or capillary restrictor as a compensating element. A comparative performance of the membrane compensated hydrostatic slideway system has also been studied vis-à-vis capillary restrictor. Furthermore, the optimal design analysis for maximum bearing stiffness is presented by using the genetic algorithm. The general equations for film pressure are provided according to the flow rate balance of slideways. Results are in terms of the load capacity and the bearing stiffness with the variations of the bearing displacement ratios, the restriction parameters and the membrane compliance. By using the genetic algorithm, the optimal design analysis is carried out under the setting design environments of numbers of recess, geometric size of recesses, and speed of slideways. For capillary restrictors, the optimal design parameters of supplied pressure, bearing clearance and restriction parameters are searched, whilst, the optimal design parameters of supplied pressure, bearing clearance, membrane restriction parameters and membrane compliance are searched for membrane restrictors. Finally, these optimal design parameters corresponding to the maximum bearing stiffness. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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