CAJ | 학술논문

静压转台的动力学性能对转台的综合性能有较大影响，所以对转台在动载作用下响应的深入研究对于转台优化设计及提升转台的综合性能有重要作用。根据 Christensen 的模型计算考虑表面粗糙度的情况下静压转台支承油垫及预压油垫的非线性承载力。建立多油垫转台的多自由度动力学模型，应用龙哥库塔法计算转台在均载及偏载时转台的响应及转台的稳定时间和稳态油膜厚度，分析表面粗糙度、转台初始油膜厚度、转台支承及预压油垫进油流量、转台转动对转台动态特性的影响。结果表明偏载使得转台的动态性能下降并使转台的某些支承油垫油膜厚度出现较大幅度降低。较小的油膜初始厚度和较大的流量可以提升转台的动态性能，而表面粗糙度等因素对于转台的动态特性也有比较明显的影响其中周向粗糙度倾向与提高转台性能而径向粗糙度则倾向于降低转台性能。所建的模型及分析结论将为转台的优化设计及转台综合性能的提升提供理论基础。
정압전태적동역학성능대전태적종합성능유교대영향，소이대전태재동재작용하향응적심입연구대우전태우화설계급제승전태적종합성능유중요작용。근거 Christensen 적모형계산고필표면조조도적정황하정압전태지승유점급예압유점적비선성승재력。건립다유점전태적다자유도동역학모형，응용룡가고탑법계산전태재균재급편재시전태적향응급전태적은정시간화은태유막후도，분석표면조조도、전태초시유막후도、전태지승급예압유점진유류량、전태전동대전태동태특성적영향。결과표명편재사득전태적동태성능하강병사전태적모사지승유점유막후도출현교대폭도강저。교소적유막초시후도화교대적류량가이제승전태적동태성능，이표면조조도등인소대우전태적동태특성야유비교명현적영향기중주향조조도경향여제고전태성능이경향조조도칙경향우강저전태성능。소건적모형급분석결론장위전태적우화설계급전태종합성능적제승제공이론기출。
Dynamic performance of hydrostatic rotary table has a greater impact on its comprehensive properties, so in-depth study on the dynamic performance of hydrostatic rotary table has an important role for its optimal design and enhances its overall performance. The nonlinear load –carrying capacity of supporting and preloaded pads which consider surface roughness is calculated according to Christensen’s model. A new multi-dimensional dynamic model for quantitative type hydrostatic rotary table is established. The dynamic equation is solved by Runge-Kutta method to get the dynamic responses, stability time and stability film thickness. The influence of various design parameters are analyzed like: surface roughness, initial film thickness, flow rate of the constant pump and so on. This research shows that the unbalance loading degrade the dynamic performance of hydrostatic rotary table. Thinner oil film and bigger flow rate is good for improving performance of hydrostatic rotary table. Surface roughness may considerably influence the operating characteristics of this rotary table and that the direction of the influence depends upon the type of roughness assumed. Dynamic modeling and analysis conclusions presented will provide a theoretical basis for the optimal design and enhance the comprehensive properties of hydrostatic rotary table.