| 新型高精度数控交流恒流源的设计 |
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| 引用本文： | 丁志杰,赵志伟,吕明召.新型高精度数控交流恒流源的设计[J].电子测量技术,2015,38(8):41-44. |
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| 作者姓名： | 丁志杰 赵志伟 吕明召 |
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| 作者单位： | 北京理工大学信息与电子学院北京100081,北京理工大学信息与电子学院北京100081,北京理工大学信息与电子学院北京100081 |
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| 摘 要： | 基于直接数字频率合成技术设计了一种新型高精度数控交流恒流源系统。该系统由低频正弦信号发生器和恒流源电路组成，其中正弦信号发生器由STM32单片机搭建，恒流源电路在功率放大电路的基础上添加反馈网络，使新型恒流源具有更高的输出精度和更好的幅值稳定性。测试结果显示：该恒流源输出电流的幅值、频率、相位、输出时长可控，具有工作稳定好、精度高、噪声小的特点。
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| 关 键 词： | 交流恒流源 直接数字频率合成 STM32 |
The design of a new high precision digital controlled alternating constant current source |
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| Ding Zhijie,Zhao Zhiwei and Lv Mingzhao.The design of a new high precision digital controlled alternating constant current source[J].Electronic Measurement Technology,2015,38(8):41-44. |
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| Authors: | Ding Zhijie Zhao Zhiwei and Lv Mingzhao |
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| Affiliation: | School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China,School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China and School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | The paper designs a new high precision digital controlled alternating constant current source system (ACCS), which is based on direct digital synthesis techniques. The system consists of the low frequency sine signal generator(SSG) and the constant current circuits, in which SSG builds on STM32 Microprocessor and the constant current circuits designs is in use of feedback based on power amplifying circuit, in order to achieve high output precision and high amplitude stability. The results show that the new ACCS can provide output current with controlled amplitude, frequency, phase, the output length, with characteristics of higher stability and precision, as well as lower noise. |
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| Keywords: | alternating constant current source direct digital frequency synthesizer STM32 |
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