signature=800c2934bb72de8d2912c36e4444ceb9,Detection and Quantification of Stiction

董秋杰

于 2021-05-30 05:23:31 发布

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文章标签： signature=800c2934bb72de8d2912c36e4444ceb9

该发明提出了一种无需额外阀门测试的非侵入式、模型无关的数据驱动方法，能自动检测并量化控制阀的摩擦问题。通过使用过程变量(PV)、控制器输出(OP)和设定点(SP)数据，该方法可以检测和量化阀杆摩擦，不需要阀门定位器(MV)数据。

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摘要：

An effective non-intrusive data-based monitoring method may reduce the cost of control loop performance maintenance by screening and short-listing those control loops or valves that need maintenance. The invention comprises a data-based, model-free, non-invasive method that can automatically detect and quantify stiction present in control valves. The method does not require the implementation of any additional valve travel test or, as commonly known, bump test of the control loop. The method may detect and quantify stiction using controlled variable (pv), controller output (op) and set point (sp) data. It does not require valve positioner (mv) data.

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