【摘要】 给出了一种航空相机调焦控制系统的实现方法。系统采用一片51微控制器完成四台相机的闭环调焦控制。整个系统有效的利用了51微控制器的硬件资源,减小了系统的体积。实验结果表明,系统的应答时间小于1.2ms(系统要求<1.5ms),调焦精度小于±2μm,满足系统(<±5μm)的要求。更多还原

【Abstract】 In this paper,we presented an aerial focusing control system based on single-chip computer.A MCS-51 compatible microcontroller was used to perform data acquisition and processing of photoelectric encoder,communication with top management system by RS-485,controlling of four closed-loop focusing systems.With the time-multiplexed bus,the entire system makes use of hardware resource of the microcontroller effciently in controlling four stepper-motors.In our testing,the response time of this system is less than 1.2ms(Treq<1.5ms),and the precision of focusing meets our requirement.更多还原