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首页> 外文会议>International Instrumentation Symposium; 20070430-503; Tulsa,OK(US) >Bit Checking to Detect Measurement Anomalies in High-Speed Aerodynamic Test Data
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Bit Checking to Detect Measurement Anomalies in High-Speed Aerodynamic Test Data

机译：位检查以检测高速空气动力学测试数据中的测量异常

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摘要

A capability has been developed at the Arnold Engineering Development Center (AEDC) Engine Test Facility to validate test data from thousands of sensors located throughout the test article and test facility. This capability has evolved over a number of years and has been used extensively to validate transient and steady-state aeropropulsion ground-test data. New test requirements in the AEDC 16-Foot Transonic Propulsion Wind Tunnel require near-real time validation of 176 channels of highspeed dynamic data at an aggregate rate of more than a million samples per second. The turbulent nature of the flow over the test article, flow separation, vortices, and other aerodynamic phenomena prevented use of many of the automated aeropropulsion data quality checks. Thus, new checks had to be developed to automatically detect anomalies. The methodology utilizes time-dependent, binary, 16-bit integer data to detect abnormal bit variations, stuck bits, and floating bits.
机译：阿诺德工程开发中心（AEDC）发动机测试设施已经开发出一种功能，可以验证位于整个测试物品和测试设施中的数千个传感器的测试数据。这种能力已经发展了许多年，并已广泛用于验证瞬态和稳态航空推进地面测试数据。 AEDC 16英尺跨音速推进风洞的新测试要求要求以每秒超过一百万个采样的总速率对176个高速动态数据通道进行近实时验证。测试物品上的湍流特性，气流分离，涡旋和其他空气动力学现象阻止了许多自动航空数据质量检查的使用。因此，必须开发新的检查以自动检测异常。该方法利用时间相关的二进制16位整数数据来检测异常位变化，滞留位和浮动位。

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