In hydraulic control valves, to achieve the performance of good sealing, fast response, large flow, and strong anti-pollution ability, pilot and control stages are commonly designed to conical structures. The valve core combined with a spring is usually used as an automatic valve, the static and dynamic forces act on the valve while it is used to regulate the flow during the startup and shut down operation. Consequently, problematic phenomena occur, such as valve vibrations, cavitation bubble, high-frequency noise, thus dissipating hydraulic energy, deteriorating the performance of the hydraulic power system, and limiting its practical applications.^1,2 Vibration signal of the valve core is carrier status information, which contains a wealth of equipment abnormal or fault information. Vibration signal analysis method is one of the most effective and commonly methods in equipment fault diagnosis. Therefore, it is very important to study the vibration characteristics of cone valves.

中文翻译：

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锥阀芯振动特性的图像识别与诊断

在液压控制阀中，为了实现良好的密封，快速响应，大流量和强大的抗污染能力，先导和控制级通常设计为锥形结构。带弹簧的阀芯通常用作自动阀，静力和动态力作用在阀上，而阀芯用于在启动和关闭操作期间调节流量。因此，出现诸如阀振动，气蚀气泡，高频噪声之类的问题现象，从而耗散了液压能，使液压动力系统的性能恶化，并限制了其实际应用。^1,2阀芯的振动信号是载体状态信息，其中包含大量的设备异常或故障信息。振动信号分析方法是设备故障诊断中最有效，最常用的方法之一。因此，研究锥阀的振动特性非常重要。