Experimental Study on the Apparatus with an Optical Particle Sensor for Real-Time Lubrication Diagnostics

为了对摩擦部件的润滑状态进行实时诊断，研制了一种新型的光学颗粒传感器测量仪。取得了以下研究结果：1.构建了三种类型的激光粒子传感器，并对其性能进行了详细的测试。使用自集束的颗粒传感器被发现是最有用的。完成了对颗粒传感器输出信号进行测量的电路和数据采集系统。通过对玻璃微珠(直径分别为20微米和40微米)在水中的测量和黄铜在润滑油中的严重磨损颗粒的测量，对所研制的装置的性能进行了检验。验证了我们的测量系统的可靠性。利用该系统对轴承金属(LBC3)磨损试验中使用的润滑油中的磨粒进行了实时监测。结果表明，磨粒随滑动距离或接触载荷的变化与磨损量的变化具有一定的相关性，这表明我们研制的光学颗粒传感器和装置可用于润滑诊断。本研究的成果达到了我们的研究目的。

A new measuring apparatus with an optical particle sensor was studied in order to diagnose the lubricating conditions of tribo-conponents at real-time. Following results were obtained.1. Three types of laser beam particle sensor were constructed and their properties were tested in detail. The particle sensor using a selfoclens was found to be most useful. A circuit and data acquisition system which can measure the output signals of particle sensor was completed.2. The properties of our developed apparatus were examined by the measurements of the glassbeads (20 mum and 40 mum in diameter) in water and of the severe wear particles of brass in lubricating oil. The reliability of our measuring system was confirmed.3. The wear particles in lubricating oil in which was used in the wear tests of bearing metal (LBC3) were monitored at realtime using our measuring system. The variations of wear particles with sliding distance or contact load were found to correlate to those of wear loss.From these results, it is found that our developed optical particle sensor and apparatus is useful for lubrication diagnostics. The fruit of this study has reached our objective of research.