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首页> 外文会议>International Conference on Fluid Power Transmission and Control(ICFP' 2005); 20050405-08; Hangzhou(CN) >The Introduction of Artificial Faults into a Proportional Solenoid Valve
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The Introduction of Artificial Faults into a Proportional Solenoid Valve

机译：将人工故障引入比例电磁阀

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On line condition monitoring of components and systems has become more feasible with the application of modern filtering technology and the increased computing power of microcomputers. However, most of the underlying monitoring principals require some form of "calibration" to actual physical faults, which can be very costly, and in some cases, very dangerous to accomplish. In this study, a proportional solenoid valve was studied. The objective was to determine a method which could introduce a "simulated fault" in the main stage of the spool in a non-destructive manner; in addition, the magnitude and nature of the simulated fault was to be variable and controlled. In this manner, any monitoring scheme could be calibrated in a reliable fashion. Because proportional solenoid valves have two solenoids which actuate the main spool, one of the solenoid (labeled simulator) was used to introduce an external force on the spool while the other acted as the normal stroking force actuator. A force transducer was placed between the spool and the simulator solenoid and was used to feedback the force to a computer controller and force profile system. The solenoid could create viscous, coulomb and stiction type forces in a controlled fashion and could be varied on demand. The fault simulator worked very well for this particular type of valve but could only operate in one direction as the second solenoid was used as the fault simulator. However, it could be used to evaluate condition-monitoring schemes for a wide range and type of fault conditions.
机译：随着现代过滤技术的应用和微型计算机计算能力的提高，组件和系统的在线状态监视已变得更加可行。但是，大多数基础监视原则要求对实际的物理故障进行某种形式的“校准”，这可能会非常昂贵，并且在某些情况下，实现起来非常危险。在这项研究中，研究了比例电磁阀。目的是确定一种可以以无损方式在阀芯主级引入“模拟故障”的方法。另外，模拟断层的大小和性质是可变的和受控的。以这种方式，可以以可靠的方式校准任何监视方案。由于比例电磁阀具有两个可驱动主阀芯的螺线管，因此一个螺线管（标为模拟器）用于在阀芯上施加外力，而另一个则用作正常的行程力致动器。力传感器放置在阀芯和模拟器螺线管之间，用于将力反馈到计算机控制器和力分布系统。螺线管可以受控方式产生粘性，库仑和静摩擦力，并可根据需要进行更改。故障模拟器对于这种特殊类型的阀工作得很好，但是由于第二个螺线管被用作故障模拟器，因此只能在一个方向上运行。但是，它可以用于评估各种故障条件的广泛范围和类型的状态监视方案。

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