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本文介绍了SHJ—741型摄影经纬仪旋转快门的同步控制方案——并联运行的自整角机的同步控制系统。简单的从理论上分析了该系统的工作原理,说明了影响同步精度的一些主要参数和采用400Hz激磁电压的必要性,并就实际所用的自整角机介绍了主要参数的测试及为获得尽可能高的同步精度在实际装调时的调试原则和注意事项。通过实用样机的使用和测试证明了这种方案的实用性,获得了拍摄频率为1幅/秒到24幅/秒时,其最差的同步精度也不大于300微秒的结果,最高可达50微秒。建仪在短基线的弹道摄影经纬仪的同步控制系统中可以采用。
This paper introduces the SHJ-741 photographic theodolite rotating shutter synchronization control scheme - parallel operation of the synchro synchronization control system. The principle of this system is simply analyzed theoretically. Some main parameters that affect the synchronization accuracy and the necessity of using 400Hz excitation voltage are described. The main parameters of the autostair used in this paper are introduced, The possible high synchronization accuracy in the actual installation of debugging principles and precautions. The practicality of this scheme is proved through the use and testing of practical prototypes, and the worst synchronization accuracy is not more than 300 microseconds when the shooting frequency is 1 / second to 24 / second, up to a maximum of 50 microseconds. The built-in instrument can be used in the short-baseline ballistic photogrammetric synchronization control system.