本文讨论系统识别用于飞行试验技术的某些问题.文章指出制定详细的飞行试验计划是系统识别的必要基础。文章还讨论了输入信号的设计问题,介绍了一种用计算机产生的修正的3211输入信号,推荐了几种3211信号序列、它们可用来激励飞机的动力学特性或者作动器的动力学特性,其中一些还可同时用于不同的操纵系统。 This article discusses some of the problems identified by the system for use in flight test techniques and points out that developing a detailed flight test plan is a necessary basis for system identification. The article also discusses the design of input signals, introduces a computer-generated modified 3211 input signal, recommends several 3211 signal sequences that can be used to motivate aircraft dynamics or actuator dynamics, Some of them can also be used for different operating systems at the same time.