This article takes water -supply system of one school as an example, researches the application of PLC and frequency conversion speed adjustment technology in the electrical control system.
以某学校供水系统为例，研究了PLC及变频调速技术在电气控制中的应用。
WANG Yonghua. Modern Electrical Control and PLC Application Technology [M]. Beijing: Beijing University of Aeronautics and Astronautics Press, 2013.
[3]王永华。现代电气控制及PLC应用技术[M]。北京：北京航空航天大学出版社，2013。
WANG Yonghua. Modern Electrical Control and PLC Application Technology [M]. Beijing: Beijing University of Aeronautics and Astronautics Press, 2013.
[3]王永华。现代电气控制及PLC应用技术[M]。北京：北京航空航天大学出版社，2013。
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