采用TMS320LF2407的自动调焦控制系统设计  

Autofocus System Design Based on TMS320LF2407

作　　者：尹宏建 高慧斌[1] 乔冠宇[1,2] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,长春130033 [2]中国科学院大学,北京100049

出　　处：《化工自动化及仪表》2014年第2期178-180,190,共4页Control and Instruments in Chemical Industry

摘　　要：为了使光电经纬仪在对目标跟踪过程中的成像始终清晰稳定,需要进行自动调焦处理。采用TMS320LF2407作为控制系统核心芯片,设计了包括串行通信接口、步进电机、步进电机驱动器、AD转换以及液晶显示等模块为一体的控制系统。实验结果表明:系统的最大理论误差0.034 5mm,实际最大误差0.032 0mm,满足经纬仪对于调焦系统的要求。The autofocus system was designed to achieve both stable and clear images while applying photoelectric theodolite to track targets. The system design has TMS320LF2407 taken as the core chip of control system and the modules of serial communication interface, step motor, step motor driver, A/D converter and liquid crystal display included. Experimental results show that the system＇ s maximum theoretical error of 0. 0345 mm with 0. 0320 mm for actual maximum error can satisfy theodolite＇ s requirement for focusing system.

关 键 词：调焦系统 TMS320LF2407 经纬仪 闭环控制 

分 类 号：TH165.2[机械工程—机械制造及自动化]