摄影机同步控制系统的研究

对160经纬仪摄影机同步控制系统作了全面的分析,提出了几种可行的控制方案,并进行了讨论和比较分析。着重对一种直流电机作为执行机构,8098作为中央处理单元的控制方案作了实验。起动过程引入电流检测反馈,使电机实现大电流快速起动,接近给定转速后电流环开环,引入转速、位置负反馈,缩短了同步时间,完成了同步控制系统性能的改善。

Study on Synchronous Control System of Theodolite Camera

The synchronous conttol system of Theodolite camera is analysed,then several feasiblecontrol schemes are raised and discussed.In the end,the schemes are laid emphasis on oneof them,which used DC motor as execution unit and SCM 8098 as CPU,In the scheme,current detecting unit is added to the original control system. At the time of starting themotor,the current detecting feedback is switched on until the rotational speed of the motorclose to the given speed,then the current feedback is switched off,speed-positon doubleloop control system is put into operation. According to the result of the experiment,wecould say the scheme is effective,and the performance of the synchronous control systemwas improved.