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Virtual instrument for controlling and monitoring digitalized power supply in SSRF 被引量:2
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作者 TANG Jun-Long xu rui-nian +2 位作者 CHEN Huan-Guang SHEN Tian-Jian LI De-Ming 《Nuclear Science and Techniques》 SCIE CAS CSCD 2006年第3期129-134,共6页
The Shanghai Synchrotron Radiation Facility (SSRF) needs extremely precise power supplies for their various magnets. A digital controller is being developed for the power converters of the SSRF power supply (PS). In t... The Shanghai Synchrotron Radiation Facility (SSRF) needs extremely precise power supplies for their various magnets. A digital controller is being developed for the power converters of the SSRF power supply (PS). In the digital controller, a fully digital pulse-width modulator (PWM) directly controls the power unit insulated gate bipolar transistor (IGBT) of the PS. A program in LabVIEW language has been developed to control and monitor the digital PS via serial communication (RS232) from a PC and to modify its parameters as well. In this article, the software design of the virtual instrument for controlling and monitoring digitalized PS and its associated functions are described, and the essential elements of the program graphical main-VI and sub-VI source code are presented and explained. The com- munication protocol and the structure of the developed system are also included in this article. 展开更多
关键词 数字功率供给 虚拟工具 SSRF PWM
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巴彦淖尔市地区中学生生活习惯和饮食习惯调查分析
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作者 李云玲 徐瑞年 +1 位作者 夏美茹 李亚珍 《科技视界》 2018年第2期20-22,共3页
采用按比例概率抽样调查问卷方式,调查巴彦淖尔市地区中学生生活习惯和饮食习惯,分析调查结果并给出科学生活习惯和饮食习惯的建议。
关键词 巴彦淖尔市 中学生 生活习惯 饮食习惯
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