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中文摘要：
依据润滑油中磨粒与电感线圈之间耦合关系,设计了1种新型的电感式磨粒传感器,并建立了相应的在线磨粒测试系统.利用在线磨粒监测试验台,对传感器的磨粒检出能力、测试结果的一致性以及测试系统输出与磨粒通过速度的关系进行了试验.结果表明：该在线磨粒监测传感器对粒度大于500μm的铜磨粒和粒度大于100μm的铁磨粒具有较好的检测能力;磁性磨粒收集装置能显著提高传感器对小尺寸铁磁质磨粒的检测能力;在磨粒速度一定情况下,传感器对不同类别不同粒度的磨粒输出一致性好;磨粒速度对测试系统输出影响较大,磨粒速度越快,测试系统输出越小;提高传感器信号放大电路的频响范围,将改善测试系统的响应速度,提高对高速磨粒的检出能力.本研究结论证明该传感器能较好地满足在线磨粒监测的要求.
英文摘要：
According to electromagnetic coupling relationship between metal wear particles and inductive coil,a novel inductive wear particle sensor and the detection system were designated.The testing bed of on-line wear particle monitoring was applied to verify the capability and conformity.And the relationship between the outputs of the detection system and the speeds of the wear particles was also studied.The experimental results showed that the sensor was effective to detect Fe wear debris with sizes larger than 100μm and Cu wear debris with sizes larger than 500μm.The magnetic particles trap can remarkably improve the detection capability of the sensor for small ferromagnetic wear particles.When the speed of wear particles was fixed,the sensor had good consistency for different kinds of wear particles of different sizes.The speed of wear particle had a great effect on the output of the detection system.And the output decreased quickly by decreasing the speed of wear particles.The responsing speed of the detection system can be improved by increasing the frequency response of the signal amplifying circuit.The conclusions of this study was that the sensor can meet the requirement of on-line monitoring of wear particle in oil.
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