【正文】 .......................................................................................... 10 ADC 功能簡(jiǎn)介 .......................................................................................... 10 ADC 相關(guān)寄存器 .......................................................................................11 Atemga8 的 PWM 功能 ...................................................................................... 15 PWM 波形發(fā)生器選擇 ............................................................................. 15 時(shí)鐘源選擇 ............................................................................................... 17 4 硬件電路設(shè)計(jì) ............................................................................................................... 18 電源電路設(shè)計(jì) ..................................................................................................... 18 整流濾波電路設(shè)計(jì) ................................................................................... 18 開(kāi)關(guān)變換電路設(shè)計(jì) ................................................................................... 18 控制電 路設(shè)計(jì) ..................................................................................................... 19 時(shí)鐘電路設(shè)計(jì) ........................................................................................... 19 單片機(jī)復(fù)位電路設(shè)計(jì) ............................................................................... 19 單片機(jī)與數(shù)碼管接口電路設(shè)計(jì) ............................................................... 20 單片機(jī)與鍵盤(pán)接口電路設(shè)計(jì) ................................................................... 21 反饋電路設(shè)計(jì) ........................................................................................... 22 5 系統(tǒng)軟件設(shè)計(jì) ............................................................................................................... 24 主程序設(shè)計(jì) ......................................................................................................... 24 鍵盤(pán)防抖動(dòng)子程序設(shè)計(jì) ..................................................................................... 25 數(shù)碼管掃描子程序設(shè)計(jì) ..................................................................................... 25 ADC 轉(zhuǎn)換子程序設(shè)計(jì) ........................................................................................ 26 調(diào)節(jié)函數(shù)子程序設(shè)計(jì) ........................................................................................ 27 6 系統(tǒng)調(diào)試 ....................................................................................................................... 29 軟件調(diào)試調(diào)試 ..................................................................................................... 29 系統(tǒng)整體調(diào)試 ..................................................................................................... 29 系統(tǒng)誤差分析 ..................................................................................................... 32 7 PCB 電路板的繪制以及制作 ....................................................................................... 34 電路板的制作 ..................................................................................................... 34 PCB 圖繪制 ............................................................................................... 34 PCB 電路板的制作流程 ........................................................................... 34 焊接電路板 ......................................................................................................... 35 8 結(jié)論 .............................................................................................................................. 36 謝辭 .................................................................................................................................. 37 參考文獻(xiàn) .......................................................................................................................... 38 附錄 .................................................................................................................................. 39 附錄一 總體設(shè)計(jì)電路圖 ......................................................................................... 39 附錄二 制作樣機(jī)圖 ................................................................................................. 40 附錄三 器件清單 ..................................................................................................... 42 附錄四 源程序 ......................................................................................................... 43 外文資料 .......................................................................................................................... 53 唐 山 學(xué) 院 畢 業(yè) 設(shè) 計(jì) 1 Stepper motor is a kind of pure digital control motor and brushless dc motor controlled by electric pulse signal type. Stepper motor is the core of the modern orientation drive, widely used in machinery, electric power, textile, electronics, instruments, printing and aerospace, ships, weapons, and other areas of the defe nse industry, etc. The characteristics of the stepping motor control system based on single chip microputer include high stability, low cost, convenient control and wide application , etc. The IR remote control is used as rhe input to the contrler, which can send an input signal of mand for the the design of the stepper motor control system with the single chip processor as the core processor. The remote control can change the rotation states of stepper motor and the running status can be showed on LCD1602 display. The infrared remote control with carrier for 38 KHZ is used as the control end of the user, which can convert the users’ mands into the infrared signal. The TL1838 can receive the infrared signal and convert it into electrical signal, which input to MCU can obtain instructions of users by processing the ining signal and control stepping motor of the 28BYJ48 type, the current status can be shown by LCD1602. Users can control acceleration, deceleration, forward, inversion for the stepping motor. The features of the control system of stepper motor includes