Hydraulic Pump Condition Monitoring Using Dynamic Response

本项目将研究通过液压泵的动态响应来确定其状态的可行性。泵受到机械磨损和侵蚀时，其内部部件会经历更多的泄漏和不同的摩擦。泄漏和摩擦的这些变化将改变泵对流量指令或背压变化的反应。这项研究将建立参与研究的特定泵的动态模型，并量化泵响应的变化，目的是通过动态压力测量来评估泵的剩余使用寿命。这项研究与另一项单独的研究有关，该研究将产生大量具有不同程度磨损的泵。这些泵在其使用寿命内高度仪表化，因此其磨损历史是众所周知的。这些泵将被用作当前提案的测试对象。与以往集中在泵中引入的人为故障的研究不同，这些实际磨损的泵将提供更准确的典型故障和磨损特性的横截面。

This project will study the feasibility of determining the condition of hydraulic pumps via their dynamic response. A pump suffering from mechanical wear and erosion will experience more leakage and different friction on its internal components. These changes in leakage and friction will change the pump's response to changes in flow command or back pressure. This study will create a dynamic model of the particular pump involved in the study and quantify the changes in pump response, with the aim of evaluating the service life remaining in the pump from dynamic pressure measurements.This study is related to a separate study that will generate a large number of pumps with varying degrees of wear. Those pumps were highly instrumented over their lifetime so the wear history is well known. These pumps will be used as test subjects for the current proposal. In contrast to previous studies that have concentrated on artificial faults introduced into the pump, these realistically worn pumps will provide a more accurate cross section of typical faults and wear characteristics.