| 武义泉， 杨书生， 钟宜生 |
（清华大学 自动化系，北京 100084） |
 摘要：以VFC110和AD652为例，介绍异步和同步两种电荷平衡式电压频率变换器的工作原理、计数测频方案，进行变换误差分析，比较两种电压频率变换器的特点。 |
| 关键词：电压频率变换；电荷平衡；误差分析 |
| 中图分类号：TM935 文献标识码：A 文章编号：1000-8829(2008)05-0037-04 |
| Error Analyses of Asynchronous and Synchronous Voltage-Frequency Converters |
| WU Yi-Quan, YANG Shu-Sheng, ZHONG Yi-Sheng |
| (Department of Automation, Tsinghua University, Beijing 100084, China) |
| Abstract：The principle is stated of asynchronous and synchronous voltage-frequency converters with VFC110 and AD652 as examples.Several frequency measurement methods are proposed,and the error analyses of measurement methods are performed.Features are compared of the two kinds of voltage-frequency converters. |
| Key words：voltage-frequency converter;charge balancing;error analysis |
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