用于飞机供电特性测试系统校准的波峰系数信号产生方法研究

为实现飞机供电特性测试系统对交流电压波峰系数测量性能的校准,保障飞机供电特性测试系统对该项参数测试结果的准确性,研究了采用可编程电源配合相关硬件设备模拟产生具有指定波峰系数的交流电压信号的方法。针对其在飞机供电特性测试系统校准中应用的问题,提出了抛物线拟合法产生具有指定波峰系数的交流电压信号方法。通过实际测量分析,验证了抛物线拟合法模拟产生的交流电压信号的波峰系数具有更高的准确性,更适用于实现飞机供电特性测试系统对交流电压波峰系数测量性能的校准。

A Method for Generating Specified Crest Factor Signal for Calibration of Aircraft Electric Power Characteristic Test System

In order to calibrate the crest factor of the aircraft power supply characteristic test system, and to ensure the accuracy of the test results of the system, the programmable power supply and related hardware equipment were used to generate the specified crest factor. By analyzing and studying the common methods of time domain and frequency domain for generating AC voltage signals with specified crest factor, a parabolic fitting method was proposed to generate AC voltage signals with specified crest factor. Through the actual measurement analysis, it is verified that the parabolic fitting method has higher accuracy, and is more suitable for calibrating the crest factor of the aircraft power supply characteristic test system.