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首页> 外文会议>IET amp; ISA 60th International Instrumentation Symposium >Derived once per rev signal generation for Blade Tip Timing systems
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Derived once per rev signal generation for Blade Tip Timing systems

机译：刀尖定时系统的每转信号产生一次

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摘要

The majority of Blade Tip Timing (BTT) acquisition and analysis systems require a once per revolution (OPR) timing reference that is vibration free and reliable throughout the whole speed range of the rotor under investigation. Typically this consists of a probe and a target mounted somewhere close to the rotor centre line[1]. In many applications the installation of the OPR sensor is expensive, and in the case of turbines, in a non-optimal position due to access and environmental constraints. OPR systems are usually duplicated for redundancy and failure rates are high. The loss of the OPR signal usually results in the loss of all analysis capability for a BTT application. Numerous attempts have been made to derive the OPR signal from the blade arrival time, however, the blades themselves undergo vibration (the exact same phenomena that we are trying to identify and quantify) leading to significant uncertainties in the resulting analysis.
机译：大多数叶片尖端正时（BTT）采集和分析系统都要求每转一次（OPR）正时参考，该参考在被研究转子的整个速度范围内均无振动且可靠。通常，它由一个探针和一个安装在靠近转子中心线[1]的位置的目标组成。在许多应用中，OPR传感器的安装非常昂贵，而在涡轮机中，由于检修和环境限制，其安装位置不理想。通常会复制OPR系统以实现冗余，并且故障率很高。 OPR信号的丢失通常会导致BTT应用程序所有分析功能的丢失。已经进行了许多尝试以从叶片到达时间得出OPR信号，但是，叶片本身会发生振动（我们试图识别和量化的现象完全相同），从而导致结果分析的不确定性。

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