基于STC89C52单片机的正三棱柱翻转黑板控制系统

针对传统黑板只有单面和不能擦拭的问题,提出了一种实现黑板翻转和字迹清除功能的正三棱柱翻转黑板控制系统.以STC89C52型单片机为核心,采用了C语言编程.采用双闭环直流调速系统控制直流电动机的转速实现了黑板的翻转转速的稳定,通过采用光电编码控制了正三棱柱黑板准确翻转120°;采用滚珠丝杠传动机构实现了黑板字迹清除.研究结果表明,所采用的调速系统和定位系统提高了系统的控制精度.

Control system of tri-prism blackboard flip based on STC89C52 MCU

Aiming at the problem that traditional blackboard has single surface and isn＇t wiped, a tri-prism blackboard with the function of flip and handwriting clear was proposed. The design was based on STC 89C52 MCU, the software was written in C language. Double closedloop DC motor control system was applied to control speed of DC motor in order to stabilize the speed turnover of tri-prism blackboard, photoelectric encoder was applied to implement localization that the revolves 120 degrees of tri-prism blackboard. The cleaning of the writing of the tri-prism blackboard was realized by transmission mechanism of ballscrew. The results indicate that the control precision is improved by the speed regulation system and positioning system.