本文研究封閉式圓形靜壓平面支承使用兩種節流器之工作台動態特性分析,採用等流量補償及毛細管兩種節流器。目的是為了探討此兩種固定式的節流器,在不同的供油壓力、流量及節流係數等參數,並且於工作台施以步階力、簡諧力之激振力,根據分析結果加以比較各參數的影響以及工作台之反應特性。 本文應用雷諾方程式所推導之壓力分佈形式,及假設油膜厚度建立流量方程式,求解流量平衡方程式,將其聯立求解後,得到工作台及節流器的壓力,將求出的壓力無因次化後代入作用力方程式,分別得到工作台之油膜合力,再將其代入工作台之無因次動態方程式,對時間積分求解,得到閉式圓形工作台之動態反應。
This thesis studies the dynamic characteristics in table mounted on closed-type hydrostatic flat bearing with two restrictors, which are constant-flow pump and capillary restriction. With various supply pressures, various flow rates and restriction parameters, worktable under step force and harmonic force are analyzed. Based on the Reynolds equation, the pressure distribution is formulated for the continuity equations of lubricant flow, solve these couple equations, which are solved for dimensionless recess region pressures on worktable and restrictors. The solutions of these coupled equations provide the static and dynamic amplitudes of worktable.