摘 要 本文针对乒乓球发球的特点，模拟设计了一种乒乓球发球机控制器。该发球机控制器由 8 位单片机 STC89C51 为核心的硬件电路和相关软件编程组合而成。实现改变发球速度、发球高度及角度等的功能，以满足练习者的不同技术需求，同时设置了随机发球模式，实现落球点的随机变化。本课题的软件设计采纳了主函数调用各状态子程序的方法，完成了按键控制、液晶显示、驱动电机调速的功能。配合本组同学的硬件设计完成了单片机外围硬件电路的设计，其中包括电动机驱动模块、键盘模块及液晶显示模块。最后我们在完成硬件电路的分析和软件模块调试的基础上，进行了联机调试，对各模块电路实行软硬件检测，有效地将两者结合起来，完成了系统的整体控制。关键词：乒乓球发球机，控制器，发球模式，单片机ABSTRACT Considering the characteristics of the table tennis served，the thesis designs a kind of table tennis serving controller. It is consist of traditional 8 monolithic integrated circuitsSTC89C51 for the hardware circuit design and related software C51 for programming design. It can accomplish the function of changing the ball's speed，altitude and angle，in order to satisfy the needs of people. Meanwhile the random serving patten was designed and the fall points of the table tennis become randomly. The software in this essay is designed using the form that the main function calls a subroutine，and finishing the function of button control，liquid crystal display，drive motor speed regulation.The hardware design produced a peripheral circuit of monolithic integrated circuits including the drive motor module，keyboard module and LCD display module. Finally，on the basis of finishing hardware circuit analysis and software module debug, we match the soft and hardware and test all modules carefully, then the basic function of the system achieves the desired effect.KEYWORDS: the table tennis serving machine，controller，serving pattern，single chip microcomputer ...
