Abstract

In this article, a novel ferrofluid bearing with controllable damping effect is designed. Compared with a typical sliding bearing, this bearing uses the ferrofluid to replace the lubricant in the gap between the inner and outer rings, and vibration can be controlled by adjusting the viscosity damping of the internal ferrofluid. A test rig consisting of a servo motor, eddy current sensor, and data acquisition system was built to study the relationship between vibration amplitude and time at different speeds (100, 500, 1,000, 1,500, and 2,000 rpm) and currents (0, 0.05, and 0.08 A). The results show that, by application of the external magnetic field, the vibration amplitude of the ferrofluid bearing is significantly reduced. The results show that this type of bearing with variable damping may be useful in a wide range of novel control systems.

摘要

本文设计了一种阻尼效果可控的新型铁磁流体轴承。与典型的滑动轴承相比，这种轴承使用铁磁流体代替内外圈间隙中的润滑剂，通过调节内部铁磁流体的粘度阻尼可以控制振动。搭建由伺服电机、涡流传感器和数据采集系统组成的试验台，研究不同转速（100、500、1000、1500、2000rpm）和电流（0、0.05）下的振动幅度与时间的关系。 , 和 0.08 A)。结果表明，通过外加磁场，铁磁流体轴承的振动幅度显着降低。结果表明，这种具有可变阻尼的轴承可用于广泛的新型控制系统。