开关电源系统测试的方法研究

文档编号:CK036   文档字数:9105,页数:20

 摘   要
 
 开关电源具有许多良好特性,应用非常广泛。开关电源在设计、研发,调试及验收过程中,需要测试许多性能和技术指标。通常我们可以将这些测试分为功能测试、保护性能测试、安全性能测试、电磁兼容测试、可靠性测试以及其它特殊的附加测试等六大部分。本文主要介绍了常规功能的测试，选取了测试项目为线性调整率测试、输出负载调整率测试、效率测试、输出纹波电压及噪音测试、输出过流保护功能测试。两种方法：一种为基于仪器的手动测试，文中详细介绍了部分测试项目的定义以及具体的操作方法，参考数据记录表格的提供等，手动测试具有测试灵活，数据准确等特点，但测试耗时，过程繁琐，效率不高。此文，鉴于手动测试的繁琐性等缺点，文中特别尝试了搭建基于LabVIEW 的自动测试系统，介绍了平台搭建的几个关键技术点，自动测试具有效率高，测试速度快等特点。最后并将手动测试和自动测试系统测试所得的数据进行了比较，结果证明了测试系统的可行性。
关键字 开关电源；测试；自动测试系统；LabVIEW  
Abstract
 
Switching Power Supply has many good features, a wide range of applications. Switching power supply in the process of design, development, testing and approved, it need to test a number of performance and technical indicators. Usually we can divide these tests into functional tests, the protection performance testing, security testing, electromagnetic compatibility testing, reliability testing, and other additional tests. This paper introduces the features of conventional tests, test items selected for the linear adjustment of the rate of testing, the output load regulation test, efficiency test, the output ripple voltage and noise testing, output over-current protection function test. Two methods: a manual based on the test apparatus, described in detail the definition of some of the test items as well as specific methods of operation, the provision of data records such as forms, manual test with a test flexible, accurate data, but test time-consuming, cumbersome process, efficiency is not high。This article, in view of the cumbersome manual testing of such shortcomings, in the text has been set up specifically to try base LabVIEW to build automated test system and introduce several key technologies about to build automated test. The automated test with a high efficiency, speed tests and so on. Finally, manual and automatic test system to test and test data, the results prove the feasibility of testing the system.
Key words Switching Power Supply；Test；Automatic Test System；LabVIEW   

目  录
摘要 ……………………………………………………………………………………………Ⅱ
1 绪论 ……………………………………………………………………………………………1
   1.1 开关电源的定义及特点…………………………………………………………………1
   1.2 开关电源的组成…………………………………………………………………………1
   1.3 开关电源的工作原理……………………………………………………………………2
   1.4 开关电源的应用与发展前景……………………………………………………………2
 2 开关电源的手动测试………………………………………………………………………3
2.1 开关电源系统测试的目的与意义………………………………………………………3
2.2 开关电源的主要测试内容及仪器的选取………………………………………………3
 2.2.1 仪器的选取………………………………………………………………………3
 2.2.2 开关电源电气性能部分测试项目及方法………………………………………5
3 自动化测试……………………………………………………………………………………10
 3.1 方案的确定………………………………………………………………………………10
  3.2 系统组成…………………………………………………………………………………10
  3.3 人机界面编写的几个关键点……………………………………………………………11
     3.3.1 GPIB控制器的使用………………………………………………………………11
      3.3.2 VISA:与仪器通信的通行证………………………………………………………11
  3.3.3 电子表格文件的写入和读取……………………………………………………12
    3.4 手动测试与自动测试数据的对比………………………………………………………13
4 总结 ………………………………………………………………………………………… 15
 致谢……………………………………………………………………………………………16
 参考文献…………………………………………………………………………………………17

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