| 单片机控制脉宽调速系统中脉宽调制器的设计 |
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| 引用本文： | 吴作勇,张志强,范明.单片机控制脉宽调速系统中脉宽调制器的设计[J].河南科技大学学报(自然科学版),1991(2). |
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| 作者姓名： | 吴作勇 张志强 范明 |
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| 作者单位： | 洛阳工学院经管系，洛阳工学院电气系，洛阳工学院机设系 |
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| 摘 要： | 本文介绍一种应用于 MCS—51单片微机控制的 PWM 直流脉宽调速系统中的设计方法,该系统采用8031单片机控制,采用8253或8254集成电路芯片加门电路以及主-从 D 型触发器 CD4013等组成脉宽调制器。在调制频率为2KHz时,转速分辩率可达4r/min(采用8253时)和0.8r/min(采用8254时),同时,这种脉宽调制器的线路简单,脉冲宽波与开关频率的调整精确、方便,且有很好的线性特性。适用于高精度、调制范围广,要求具有良好动态性能 PWM 直流调速系统.
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| 关 键 词： | 调制器 脉宽调制 调速 微处理机 计数器 分辩率 |
Design of PWM in Pulse-width Speed Regulating System Controlled with Single Chip Microcomputer |
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| Wu Zuoyong.Design of PWM in Pulse-width Speed Regulating System Controlled with Single Chip Microcomputer[J].Journal of Henan University of Science & Technology:Natural Science,1991(2). |
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| Authors: | Wu Zuoyong |
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| Institution: | Wu Zuoyong (Department of Economic Management)
Zhong Zhiqang (Department of Electrical Engineering) |
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| Abstract: | This article introduces a design method in PWM DC pulse-width speed regulating systemcontrolled with MCS-51 single chip microcomputer which consist of 8031 monolithic processor.Inthe system 8253 or 8254 IC chip added to gate circuit as well as master-slave D flip-flop are intro-duced.At the modulating frequency of 2KHz the resolution of rotating speed reaches 4r/min(if8253 IC chip used)or 0.8r/min(if 8254 IC chip used).In addition,the circuit of PWM is simply, the regulating of the pulse-width and the turn-on frequency is accurate and convenient.The modu-lator has also good linearity and is introduced in PWM DC speed regulating system which has goodprecision,wide modulating range and fine character of dynamic condition. |
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| Keywords: | modulator pulse width modulation speed control microprocessors counters resolving power |
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