中文摘要：

利用自行开发的微型面接触润滑油膜测量系统，对阶梯轴承的流体动压润滑油膜厚度进行试验测量。试验中以静止的微型阶梯滑块平面和旋转的光学透明圆盘平面形成润滑副，在保持载荷一定的条件下，分别在阶梯滑块和玻璃盘成正的接触楔形角（正倾角）、负的接触楔形角（负倾角）和零接触楔形角（平行）不变的条件下，对油膜厚度-速度曲线进行测量，并与采用经典Reynolds方程得到的数值解进行对比。结果表明：正倾角和平行条件下，在数值变化趋势方面理论计算与试验有良好的一致性；负倾角条件下，数值解与测量值偏差较大。

英文摘要：

The film thickness of hydrodynamic lubricant in step bearing was measured by a custom-made test apparatus. In the experiments, the lubricated parallel contact consisted of a micro-slider plane and a transparent glass disc. Under a fixed load, the film thickness at different entrainment speeds was measured at three different inclination between step bear- ing and glass disk, that is plus inclination, negative inclination and parallel. The numerical solutions were got using classi- cal Reynolds control equation, and were compared with the experimental results. The results show that in plus inclination and parallel, experimental results and numerical solutions have a good consistency in the trend of numerical change, while in negative inclination, there is a big deviation between experimental results and numerical solutions.