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本文采用了“自适应延迟系统”这一术语。所谓“自适应延迟”,是指延迟系统能根据某一参考物理量的实时值,自动地确定与之相适应的延迟时间。此种延迟系统的优点是,它能够消除一般的延迟系统据之确定延迟时间的某一参考物理量由于实际值与预期值不一致而造成的仪器工作的不可靠性。本文具体介绍的一种自适当延迟系统,能根据飞行目标的实际飞行速度,自动地确定与之相适应的延迟起动高速摄影机的延迟时间。文中分析了该系统的误差,导出了与允许误差相适应的时钟脉冲频率应满足的条件。
This article uses the term “adaptive delay system”. The so-called “adaptive delay” refers to the delay system can automatically determine the appropriate delay time according to a real-time value of a reference physical quantity. The advantage of such a delay system is that it eliminates the unreliability of instrumentation that a typical delay system can use to determine a reference physical quantity for a delay time due to mismatch between actual and expected values. This article describes a self-adaptive delay system, which can automatically determine the delay time of the delayed start-up high-speed camera according to the actual flight speed of the target. In this paper, the error of the system is analyzed, and the conditions that the clock frequency should meet with the allowable error are derived.