Program writing can essentially influence the pre-processing of g-lactor flight data at centre of gravity of aircralt before bemg applied in structure fatigue life accessing.So reasinably setting pre-processing procedure sequence is necessary.Main contents of each procedure are determined such as:wiping off acute noise data,wiping off points between peak and valley,modifying system zero draft,modifying g-factor data according to instant fuselage mass,getting rid of invalid data,etc.The influence between these procedures is analyzed.The demand of procedure sequence and the cprresponding reasons are presented.And proper processing plans in some data processing methods are suggested.It is proved that the program obeyed the suggested plan presents satisfactory efficiency and gives valid processing results.%针对计算机程序编写质量欠佳可能对用于飞机结构疲劳寿命评定的飞参过载数据预处理产生不利影响的问题,有必要合理安排预处理步骤.预处理内容包括去除剧烈噪声、去除非峰非谷值、系统零点漂移修正、机体质量变化影响修正、去除首尾和中间平直段无效数据等,通过分析各步骤之间的相互影响,指出不同数据处理方法对步骤执行顺序的要求,并给出合理建议.研究结果表明,所提出的预处理步骤可以提高程序执行效率并保持处理结果的正确性.
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