pwm控制的直流電動(dòng)機(jī)調(diào)速系統(tǒng)的設(shè)計(jì).doc
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pwm控制的直流電動(dòng)機(jī)調(diào)速系統(tǒng)的設(shè)計(jì),pwm控制的直流電動(dòng)機(jī)調(diào)速系統(tǒng)設(shè)計(jì)包括仿真圖,電路圖及程序代碼摘 要直流電機(jī)具有良好的線性調(diào)速特性,簡(jiǎn)單的控制性能,啟動(dòng)轉(zhuǎn)矩大,能在寬廣的范圍內(nèi)平滑、經(jīng)濟(jì)地調(diào)速,轉(zhuǎn)速控制容易,調(diào)速后效率很高。轉(zhuǎn)速是直流電機(jī)運(yùn)行中的一個(gè)重要物理量,如何準(zhǔn)確、快速測(cè)量出電機(jī)轉(zhuǎn)速,并且實(shí)現(xiàn)對(duì)電機(jī)的調(diào)速在實(shí)際工作中具有非常大的使用價(jià)值。直流電...
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PWM控制的直流電動(dòng)機(jī)調(diào)速系統(tǒng)設(shè)計(jì)
包括仿真圖,電路圖及程序代碼
摘 要
直流電機(jī)具有良好的線性調(diào)速特性,簡(jiǎn)單的控制性能,啟動(dòng)轉(zhuǎn)矩大,能在寬廣的范圍內(nèi)平滑、經(jīng)濟(jì)地調(diào)速,轉(zhuǎn)速控制容易,調(diào)速后效率很高。
轉(zhuǎn)速是直流電機(jī)運(yùn)行中的一個(gè)重要物理量,如何準(zhǔn)確、快速測(cè)量出電機(jī)轉(zhuǎn)速,并且實(shí)現(xiàn)對(duì)電機(jī)的調(diào)速在實(shí)際工作中具有非常大的使用價(jià)值。直流電機(jī)具有非常好的調(diào)速性能,目前,在一些對(duì)調(diào)速性能要求比較嚴(yán)格的場(chǎng)合中,主要使用的還是直流調(diào)速系統(tǒng)。
本設(shè)計(jì)是以單片機(jī)AT89C51和L298控制的直流電機(jī)PWM調(diào)速系統(tǒng)。利用AT89C51芯片進(jìn)行低成本直流電動(dòng)機(jī)控制系統(tǒng)的設(shè)計(jì),能夠簡(jiǎn)化系統(tǒng)構(gòu)成、降低系統(tǒng)成本、增強(qiáng)系統(tǒng)性能、滿足更多應(yīng)用場(chǎng)合的需要。系統(tǒng)實(shí)現(xiàn)對(duì)電機(jī)的正轉(zhuǎn)、反轉(zhuǎn)、急停、加速、減速的控制,以及PWM的占空比在LED上的實(shí)時(shí)顯示。
關(guān)鍵詞:直流電機(jī); 轉(zhuǎn)速; AT89C51; L298; PWM調(diào)速
ABSTRACT
DC motor has a good startup performance and speed characteristics, it is characterized by starting torque, maximum torque, in a wide range of smooth, economical speed, speed, easy control, speed control after the high efficiency.
Speed is an important physical quantity in the operation of the DC motor, how to accurately and quickly measure the motor speed, and to achieve in practical work with a very large value in use of the motor speed control. DC motor has very good speed performance, in some occasions more stringent requirements on the speed performance, the main use of the DC speed control system.
This design is DC motor PWM speed control system which is based on single chip microcomputer AT89C51 and L298 to control. Using AT89C51 chip to design the low-cost dc motor control system, which can simplify the system structure, reduce the system cost, enhance the system performance, meet the needs of more applications. System control the move forward, reverse, stop, acceleration and deceleration of the motor, and PWM duty ratio in real-time display on LED.
Keywords:DC Motor; Speed; AT89C51; L298; PMW Speed Automatic
目 錄
1緒論 1
1.1研究背景 1
1.2國(guó)內(nèi)外發(fā)展現(xiàn)狀 1
1.3設(shè)計(jì)目的和意義 2
2直流電動(dòng)機(jī)調(diào)速的概述 4
2.1直流電機(jī)調(diào)速原理 4
2.2直流調(diào)速系統(tǒng)實(shí)現(xiàn)方式 5
2.3控制程序設(shè)計(jì) 5
3總體設(shè)計(jì)方案 7
3.1設(shè)計(jì)思路 7
3.2總體設(shè)計(jì)規(guī)劃 7
3.3系統(tǒng)框架設(shè)計(jì) 8
4系統(tǒng)硬件設(shè)計(jì) 9
4.1系統(tǒng)基本組成 9
4.1.1硬件模塊組成 9
4.1.2單片機(jī)整個(gè)控制模塊 9
4.2單片機(jī)AT89C51簡(jiǎn)介 9
4.3復(fù)位電路及時(shí)鐘電路 11
4.5 LED數(shù)碼管顯示 13
4.5.1 LED簡(jiǎn)介 13
4.5.2 LED數(shù)碼管和單片機(jī)的連接 14
4.6獨(dú)立鍵盤控制模塊 14
5系統(tǒng)的軟件設(shè)計(jì) 16
5.1系統(tǒng)軟件設(shè)計(jì)分析 16
5.2系統(tǒng)程序設(shè)計(jì)分析 17
5.2.1主程序設(shè)計(jì) 17
5.2.2按鍵延時(shí)程序 19
5.2.3中斷子程序 19
5.3PWM脈寬控制 20
5.4仿真圖 21
5.5仿真結(jié)果分析 21
結(jié) 論 24
參考文獻(xiàn) 25
致 謝 26
附 錄 27
包括仿真圖,電路圖及程序代碼
摘 要
直流電機(jī)具有良好的線性調(diào)速特性,簡(jiǎn)單的控制性能,啟動(dòng)轉(zhuǎn)矩大,能在寬廣的范圍內(nèi)平滑、經(jīng)濟(jì)地調(diào)速,轉(zhuǎn)速控制容易,調(diào)速后效率很高。
轉(zhuǎn)速是直流電機(jī)運(yùn)行中的一個(gè)重要物理量,如何準(zhǔn)確、快速測(cè)量出電機(jī)轉(zhuǎn)速,并且實(shí)現(xiàn)對(duì)電機(jī)的調(diào)速在實(shí)際工作中具有非常大的使用價(jià)值。直流電機(jī)具有非常好的調(diào)速性能,目前,在一些對(duì)調(diào)速性能要求比較嚴(yán)格的場(chǎng)合中,主要使用的還是直流調(diào)速系統(tǒng)。
本設(shè)計(jì)是以單片機(jī)AT89C51和L298控制的直流電機(jī)PWM調(diào)速系統(tǒng)。利用AT89C51芯片進(jìn)行低成本直流電動(dòng)機(jī)控制系統(tǒng)的設(shè)計(jì),能夠簡(jiǎn)化系統(tǒng)構(gòu)成、降低系統(tǒng)成本、增強(qiáng)系統(tǒng)性能、滿足更多應(yīng)用場(chǎng)合的需要。系統(tǒng)實(shí)現(xiàn)對(duì)電機(jī)的正轉(zhuǎn)、反轉(zhuǎn)、急停、加速、減速的控制,以及PWM的占空比在LED上的實(shí)時(shí)顯示。
關(guān)鍵詞:直流電機(jī); 轉(zhuǎn)速; AT89C51; L298; PWM調(diào)速
ABSTRACT
DC motor has a good startup performance and speed characteristics, it is characterized by starting torque, maximum torque, in a wide range of smooth, economical speed, speed, easy control, speed control after the high efficiency.
Speed is an important physical quantity in the operation of the DC motor, how to accurately and quickly measure the motor speed, and to achieve in practical work with a very large value in use of the motor speed control. DC motor has very good speed performance, in some occasions more stringent requirements on the speed performance, the main use of the DC speed control system.
This design is DC motor PWM speed control system which is based on single chip microcomputer AT89C51 and L298 to control. Using AT89C51 chip to design the low-cost dc motor control system, which can simplify the system structure, reduce the system cost, enhance the system performance, meet the needs of more applications. System control the move forward, reverse, stop, acceleration and deceleration of the motor, and PWM duty ratio in real-time display on LED.
Keywords:DC Motor; Speed; AT89C51; L298; PMW Speed Automatic
目 錄
1緒論 1
1.1研究背景 1
1.2國(guó)內(nèi)外發(fā)展現(xiàn)狀 1
1.3設(shè)計(jì)目的和意義 2
2直流電動(dòng)機(jī)調(diào)速的概述 4
2.1直流電機(jī)調(diào)速原理 4
2.2直流調(diào)速系統(tǒng)實(shí)現(xiàn)方式 5
2.3控制程序設(shè)計(jì) 5
3總體設(shè)計(jì)方案 7
3.1設(shè)計(jì)思路 7
3.2總體設(shè)計(jì)規(guī)劃 7
3.3系統(tǒng)框架設(shè)計(jì) 8
4系統(tǒng)硬件設(shè)計(jì) 9
4.1系統(tǒng)基本組成 9
4.1.1硬件模塊組成 9
4.1.2單片機(jī)整個(gè)控制模塊 9
4.2單片機(jī)AT89C51簡(jiǎn)介 9
4.3復(fù)位電路及時(shí)鐘電路 11
4.5 LED數(shù)碼管顯示 13
4.5.1 LED簡(jiǎn)介 13
4.5.2 LED數(shù)碼管和單片機(jī)的連接 14
4.6獨(dú)立鍵盤控制模塊 14
5系統(tǒng)的軟件設(shè)計(jì) 16
5.1系統(tǒng)軟件設(shè)計(jì)分析 16
5.2系統(tǒng)程序設(shè)計(jì)分析 17
5.2.1主程序設(shè)計(jì) 17
5.2.2按鍵延時(shí)程序 19
5.2.3中斷子程序 19
5.3PWM脈寬控制 20
5.4仿真圖 21
5.5仿真結(jié)果分析 21
結(jié) 論 24
參考文獻(xiàn) 25
致 謝 26
附 錄 27