设计了一种新型超声磨粒传感器,对传感器的输出一致性以及油液温度、黏度对传感器输出的影响进行了试验分析.结果表明:该超声磨粒传感器能够有效检测润滑油中小至45μm的磨粒并且具有良好的输出一致性;传感器的输出随着油液温度与黏度的增加而减小;高温时,因温度升高导致的换能器性能下降明显;低温时,高黏度油液对声波的吸收衰减作用显著.提出了磨粒在检测区域中的轴向位置及油液温度、黏度影响因素的修正方法. A new type of ultrasonic abrasive particle sensor was designed to test the consistency of the output of the sensor and the influence of the temperature and viscosity of the oil on the output of the sensor.The results show that the ultrasonic abrasive particle sensor can effectively detect the wear of the lubricant as small as 45μm The output of the sensor decreases with the increase of the temperature and viscosity of the oil. The performance of the transducer due to the increase of the temperature drops obviously at high temperature. When the temperature is low, The absorption and attenuation effects are significant.A correction method of the axial position of the abrasive particles in the detection area and the influencing factors of the oil temperature and viscosity is proposed.