润滑油中悬浮微粒的状况可反映机械磨损程度，针对动力系统中润滑油悬浮微粒(1-60μm损伤影响最大)对机械中的运动副磨损状况在线监测的难题，融合压电与超声技术、现代测控及计算机仿真技术，研究在声表面驻波(SSAW)激励下的微层流动力学特性，建立层流场变化规律的数值模型，揭示声表面驻波在微流通道内的流固耦合传播特性及悬浮微粒的运动规律。通过微流通道优化设计和OPFC驱动器参数匹配优化，研制微粒集中与二阶段分离操控装置及库尔特计数传感器来定量监测微粒，集成润滑油中悬浮微粒的监测系统，构建系统功能的验证平台。对微加工工艺、微粒分离技术进行深入研究，创新地提出了一种实用的可用于动力系统中SSAW激励下润滑油实时在线监测方法，为润滑油中微悬浮颗粒的精确监控研究奠定技术基础。项目的实施将为动力系统润滑油品质、设备运行状态、机械磨损程度的诊断及预报提供新的理论及相关技术成果，具有重要的理论和工程应用价值。

Particulates in lubricating oil can reflect the degree of mechanical wear. To deal with the difficulty of online detecting the motion vice wear in machines (1-60μm), combine with piezoelectric and ultrasonic technology, modern measurement, control technology and computing simulation technology, the micro laminar flow dynamics which actuated by standing surface acoustic wave (SSAW) are researched. The numerical model of the laminar flow field is built. The fluid structure interaction performances in micro flow channel by SSAW and the particle movement law are revealed. According to the optical design micro flow channels and OPFC actuator parameters, microscale particles concentration and separation in the second stage and Coulter counter sensor are researched. By researching deeply in micro fabrication and microscale particles separation, the microfluidic for real time health monitoring actuated by SSAW in the dynamical system are proposed innovated. It has provided the technology basis to monitor the micro fluidic particle precisely in lubrication. The project implementation can provide an new theory and relative technology achievement for lubrication quality, operating status of equipment and the degree of mechanical wear. It has some important theoretical and engineering application value.