基于伺服控制节流的静压推力轴承性能分析与研究

提出了一种基于液压伺服控制节流的静压推力油膜轴承的新型可控节流方式,建立了该节流方式下静压推力轴承的流量连续性方程、轴承-主轴系统动力学方程。利用MATLAB中的SIMULINK进行了仿真计算,并将该节流方式与毛细管节流进行了全面对比。研究结果表明:基于液压伺服控制节流的静压推力油膜轴承具有更优越的性能,如能够控制油膜厚度,轴向定位精度更高,动态过渡过程更短,稳定性更好,油膜刚度更大,抗冲击能力更强,更适合于高速、重载等极端工况。

Study on Dynamic Characteristics of Hydrostatic Thrust Bearing with Servo Control

A new throttling configuration of hydrostatic thrust bearing with servo control was proposed. Its flow continuity equation and dynamical equation were established, and then the simulation was conducted in MATLAB/Simulink. Compared to the traditional journal bearing based on capillary, the proposed bearing has better performance, such as, good controllability and stability, fast response, high stiffness, and strong resistance under impacts. Therefore, it has the potentials of application on the heavy loading or high speed machinery.