【正文】 has described the control principle of the stepper motor speed, angle, torque, and made the corresponding design of the stepping motor controller. Stepper motor is a precision electromechanical stepping motion of the Executive Yuan, it is the electric pulse signal into openloop control ponents of angular displacement or linear displacement of the. Through the microcontroller to control the stepper motor speed, in the nonoverload case, the motor speed, stop location only depends on the pulse signal frequency and pulse number, regardless of load changes. Characteristics and only a periodic error of stepper motors without the accumulation of the current relationship, makes the speed, position and other areas controlled by stepper motor control bees very simple. The design uses AT89S51 MCU, L297 step motor controller and L298N driver chip dedicated stepper motor control circuit to achieve the control of stepper motor. Traveling through the key, the keys control the stepper motor to move forward, stop and reverse reset, and by the corresponding buttons control the stepper motor acceleration and deceleration forward and reset. The liquid crystal display LCD1602 positioning travel, rotating direction, the stroke value and status. Altium designer software is mainly used to draw schematic in the design, the theoretical simulation and functional verification code using the Proteus software, pleted the design of the stepper motor controller. Key words: AT89S51。本 設計中采用 AT89S51 型單片機、 L297 步進電機專用控制器以及 L298N 驅動芯片組成步進電機控制電路 實現(xiàn)對步進電機的 控制?；?AT89S51 單片機的單軸步進電機控制器設計 基于 AT89S51 單片機的單軸步進電機控制器設計 The Design of Single Axis Stepper Motor Controller Based on AT89S51 MCU 基于 AT89S51 單片機的單軸步進電機控制器設計 目 錄 摘要 ...............................................................................................................................I Abstract ....................................................................................................................... II 引言 .............................................................................................................................. 1 第一章 設計背景 ..................................................................................................... 2 步進電機發(fā)展史 .............................................................................................. 2 我國步進電機的發(fā)展 ...................................................................................... 2 步進電機的發(fā)展趨勢 ...................................................................................... 3 第二章 方案設計 ..................................................................................................... 4 提出設計課題 .................................................................................................. 4 步進電機 的 工作原理 ...................................................................................... 5 步進電機的控制 .............................................................................................. 6 步進電機的驅動 ........................................................................................... 6 步進電機的調速 ........................................................................................... 9 步進電機的開環(huán)控制 ................................................................................. 11 確定設計方案 ................................................................................................ 11 第三章 硬件設計 ................................................................................................... 14 單片機最小系統(tǒng) ............................................................................................ 14 步進電機驅動電路 ........................................................................................ 14 顯示電路 ........................................................................................................ 19 獨立按鍵電路 ................................................................................................ 21 第四章 軟件設計 ................................................................................................... 23 系統(tǒng)主程序 .................................................................................................... 23 系統(tǒng)初始化子程序 ........................................................................................ 25 按鍵 子 程序 .................................................................................................... 27 顯示 子 程序 .................................................................................................... 30 基于 AT89S51 單片機的單軸步進電機控制器設計 第五章 仿真調試 ................................................................................................... 32 結論 ............................................................................................................................ 33 致謝 ............................................................................................................................ 34 參考文獻 ................................................................................................................... 35 附錄 ............................................................................................................................ 36 附錄 A：整體設計原理圖 ................................................................................... 36 附錄 B：整體仿真圖 ........................................................................................... 37 附錄 C： C 源程序代碼 ....................................................................................... 41 基于 AT89S51 單片機的單軸步進電機控制器設計 I 基于 AT89S51 單片機的單軸步進電機控制器設計 摘要 ： 本文 闡述了步進電動機 的驅動 、 調速 、 開環(huán) 控制 的 原理，并對步進電機控制器進行了設計。這一現(xiàn)行關系的存在加上步進電機只有周期性 的誤差而無積累等特點，使得在速度、 位置等控制領域 得到了廣泛 應用 。 設計中 主要使用 Altium designer 軟件繪制原理圖 ，使用 Proteus 軟件進行程序代碼的 仿真 和功能的理論驗證， 從而 完成對步進電機控制器的設計。 stepping motor。也就是說步進電機的轉速與脈沖信號的頻率成正比。隨著單片機技術的不斷發(fā)展，單片 機在日用電子產品中的應用越來 越廣泛， 六十年代初期以來，步進電機的應用得到