固体推进剂在不同状态下,诸如压力的突升、突降、波动状态下的燃速变化是国内外学者十分关注的.为此,出现了一些研究固体推进剂瞬态燃速的测试装置.激光药条燃面跟踪测量装置便是其中之一.本文对此装置的动态特性进行了理论研究,指出了测试系统的滞后对测试结果的影响,以及为减小滞后应采取的措施. Solid propellants in different states, such as sudden pressure rise, sudden drop, fluctuations in the state of fluctuating combustion is of great concern to domestic and foreign scholars.Therefore, there have been some research solid propellant transient combustion test device. One of them is one of the devices for measuring laser surface combustion tracking.This paper studies the dynamic characteristics of this device and points out the influence of the system delay on the test results and the measures to be taken to reduce the hysteresis.