| 基于串级控制的实验教学用稳压电源 |
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| 引用本文： | 尹明.基于串级控制的实验教学用稳压电源[J].实验技术与管理,2011,28(12):72-75,79. |
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| 作者姓名： | 尹明 |
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| 作者单位： | 齐齐哈尔大学通信与电子工程学院,黑龙江齐齐哈尔,161006 |
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| 基金项目： | 黑龙江省新世纪高等教育教学改革工程项目(2009年)，齐齐哈尔大学重点教研项目 |
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| 摘 要： | 在电源主电路中利用三极管集电极-发射极间的等效电阻作为LM317调节端可变电阻,解决了宽范围输出电压源中运算放大器需要较高电压供电的问题,并采用二档自动调节LM317输入电压的方法和电感负载保护电路,降低了故障率;以8位微控制器AT89S52为核心构成串级控制系统,提高了输出电压的响应速度和控制精度;设计了LCD实时显示和键盘、编码器输出电压设定电路,操作方便,减少了操作时间,适应了实验教学需要。
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| 关 键 词： | 稳压电源 实验教学 串级控制 |
Regulated power supply for experimental teaching based on cascade control |
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| Yin Ming.Regulated power supply for experimental teaching based on cascade control[J].Experimental Technology and Management,2011,28(12):72-75,79. |
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| Authors: | Yin Ming |
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| Institution: | Yin Ming(College of Communication and Electronic Engineering,Qiqihar University,Qiqihar 161006,China) |
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| Abstract: | The equivalent resistance between the collector and the emitter of a transistor was used as the rheostat at the regulatory pin of LM317 in main circuit,so as to solve the problem that integrated operational amplifiers in DC power supply with wide range of output voltage require higher voltage power supply.The method to autocontrol two-staged input voltage of LM317 and inductive load protection circuit were used to decrease the failure rate.The cascade control system with 8-bit microprogrammed control unit(M... |
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| Keywords: | regulated power supply experimental teaching cascade control |
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