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【摘要】本文論述了基于單片機直流電機控制系統(tǒng)設(shè)計，主要實現(xiàn)對電機的控制。本課程設(shè)計是實現(xiàn)電機的正轉(zhuǎn)、反轉(zhuǎn)、加速、減速、停止等操作，并實現(xiàn)電路的仿真。在設(shè)計中，采用AT89S52單片機作為整個控制系統(tǒng)的控制電路的核心部分，配以各種顯示、驅(qū)動模塊，實現(xiàn)對電機轉(zhuǎn)速的測量和顯示，采用帶中斷的獨立式鍵盤作為命令的輸入，單片機在程序的控制下，不斷給光電隔離電路發(fā)送PWM波形，H型驅(qū)動電路完成電機正反轉(zhuǎn)的控制。采用PWM調(diào)速方式，通過改變PWM的占空比來改變電動機的電樞電壓，從而實現(xiàn)對電機調(diào)速。并且硬件電路的簡化，提高了整個系統(tǒng)的穩(wěn)定性和可靠性。 關(guān)鍵字:AT89S52單片機；PWM調(diào)速；正反轉(zhuǎn)控制；仿真
【Abstract】This article introduced a DC motor control system design based on microcontroller, the main achievement of this design is the motor control. This course is primarily designed to achieve motor speed controller for forward and reverse, acceleration, deceleration, and stop such an operation and to achieve the circuit simulation. In the design, using AT89S52 as a whole of the control circuit of microcontroller control system, accompanied by a variety of shows, drive module enables the motor speed parameter display and measurement, With the stand-alone keyboard with a break as a command input, single-chip in the process control, continuing to the optical isolation circuit to send PWM waveform, H-type motor driving circuit to complete positive inversion control. In the design, using PWM speed mode change the motor armature voltage as to control the speed of the motor by changing the PWM duty cycle. The simplification of the hardware circuitry can improve stability and reliability of the motor control system. Key words: AT89S52 microcontroller；PWM speed；positive inversion control；Simulation |
