【正文】 16bit microcontroller MSP430F2619. Design of a DC motor based on MSP430F2619 double loop PWM speed control system, the detection of DC motor speed tachometer generator speed feedback form, constitutes use of rectifier bridge current feedback. MSP430F2619 of speed and current dualloop PI controller of the digital control. MSP430F2619 MCU timer generated PWM waves, amplified by power driver chip controls the DC motor armature voltage for smooth speed control. In order to achieve a simple control system, speed and reliable performance. Key words： MSP430， DC， PWM speed control， dualloop controller 目 錄 摘 要 ................................................................................................................................. I ABSTRACT ........................................................................................................................ II 1 緒論 ............................................................................................................................... 1 直流電機(jī)調(diào)速技術(shù)的發(fā)展 ..................................................................................... 1 PWM調(diào)速技術(shù) ....................................................................................................... 1 雙閉環(huán)控制系統(tǒng)簡介 ............................................................................................ 2 論文研究的內(nèi)容及章節(jié)安排 ................................................................................. 2 2 MSP430系列單片機(jī)概述與直流電動(dòng)機(jī)調(diào)速方式簡介 ........................................................ 5 MSP430系列單片機(jī)簡介 ........................................................................................ 5 MSP430的原理及性能特點(diǎn) .................................................................................... 5 直流電機(jī)的主要結(jié)構(gòu) ............................................................................................ 6 直流電動(dòng)機(jī)的調(diào)速方式 ........................................................................................ 7 3 直流電機(jī)雙閉環(huán)調(diào)速控制系統(tǒng)設(shè)計(jì) ................................................................................. 9 系統(tǒng)組成原理圖 ................................................................................................... 9 外圍電路介紹 .................................................................................................... 10 轉(zhuǎn)速、電流雙閉環(huán)直流調(diào)速系統(tǒng) ........................................................................ 13 電流、轉(zhuǎn)速雙閉環(huán)控制器設(shè)計(jì) ................................................................ 14 調(diào)速系統(tǒng)控制單元的確定和調(diào)整 ............................................................. 15 4 系統(tǒng)軟件設(shè)計(jì) ............................................................................................................... 17 數(shù)字 PI調(diào)節(jié)器的設(shè)計(jì) ........................................................................................ 17 數(shù)字 PI調(diào)節(jié)器的控制算法 ...................................................................... 17 數(shù)字 PI調(diào)節(jié)器的控制程序 ...................................................................... 18 A/D轉(zhuǎn)換控制程序的設(shè)計(jì) .................................................................................... 20 ADC12轉(zhuǎn)換 器的性能及特點(diǎn) ..................................................................... 20 ADC12轉(zhuǎn)換器的控制程序 ........................................................................ 21 基于 MSP430 的直流電機(jī) PWM 調(diào)速雙閉環(huán)控制系統(tǒng)的設(shè)計(jì) IV 5 總結(jié) ............................................................................................................................. 25 參考文獻(xiàn) ........................................................................................................................... 26 致 謝 ..................................................................................................... 錯(cuò)誤 !未定義書簽。從而實(shí)現(xiàn)了控制系統(tǒng)簡單、調(diào)速性能可靠。基于 MSP430F2619設(shè)計(jì)一直流電機(jī)雙閉環(huán) PWM調(diào)速系統(tǒng)，由測速發(fā)電機(jī)檢測直流電機(jī)轉(zhuǎn)速構(gòu)成速度反饋， 利用整流橋 構(gòu)成電流反饋。 摘 要 直流電機(jī)傳統(tǒng)的調(diào)速方法調(diào)節(jié)精度低、能源利用率低、調(diào)速不穩(wěn)定、可控性較差；而脈寬調(diào)制（ PWM）直流調(diào)速技術(shù)，具有調(diào)速精度高、響應(yīng)速度快、調(diào)速范圍寬和損耗低等特點(diǎn)，不僅實(shí)現(xiàn)了對電機(jī)速度的實(shí)時(shí)調(diào)節(jié)，而且還體現(xiàn)了節(jié)約能源，經(jīng)濟(jì)實(shí)用的特點(diǎn)。 本文介紹了 TI公司的一種超低功耗 16位單片機(jī) MSP430F2619。 MSP430F2619完成轉(zhuǎn)速、電流雙閉環(huán) PI控制器的數(shù)字控制，且單片機(jī)的 定時(shí)器生成 PWM波，經(jīng)功率驅(qū)動(dòng)芯片放大后控制直流電機(jī)的電樞電壓進(jìn)行平滑調(diào)速。 關(guān)鍵詞： MSP430，直流電機(jī)， PWM調(diào)速，雙閉環(huán)控制器 基于 MSP430 的直流電機(jī) PWM 調(diào)速雙閉環(huán)控制系統(tǒng)的設(shè)計(jì) II ABSTRACT The traditional method of DC motor speed regulation accuracy is low, low energy efficiency, speed instability, poor control。 1 1 緒論 三十多年來， 隨著電力電子技術(shù)的不斷進(jìn)步 ,直流電機(jī)調(diào)速控制經(jīng)歷了重大