plc控制系统的抗干扰分析（Anti interference analysis of PLC control system）.docVIP

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plc控制系统的抗干扰分析（Anti interference analysis of PLC control system）.doc

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plc控制系统的抗干扰分析（Anti interference analysis of PLC control system）

plc控制系统的抗干扰分析（Anti interference analysis of PLC control system） No. The 6 phase of Shanxi coking coal technology No. 6 2009 June Shanxi, Coking, Coal, Science Technology, Jun. 2009 Technical experience A. Anti interference analysis of PLC control system Rongzhanyu 1. Shanxi Xing Neng Power Generation Co., Ltd. ) The system of auxiliary network that influences Shanxi Xing Neng Power Generation Co., Ltd. The main disturbance source of the stability of PLC control system, Cheng Yinjin OK, analysis. Starting with the hardware circuit design and software programming Research, discussion, improvement Method and anti-interference ability of PLC control system Measures。 Practice proves These methods and measures are improving The anti-interference ability of PLC control system is of universal significance and practical value. Keywords PLC; control system; Anti-interference CLC number TD679 document identifier : B Allows SCR to be used in power grids or other devices, Article number : 1672 -0652 -) 06 -03 PLC is a high degree of automation and flexible configuration for industrial students. 1) power supply waveform distortion interference : as a result of PLC control system itself Process control unit Because of its high reliability, GTO, IGBT and other power half conductivity Wide range of body devices have been obtained in the field of automatic control for harsh environments Higher harmonics, noise, parasitic oscillations at work Application. In Shanxi Xing Neng Power Generation Co., Ltd. all the company auxiliary workshop Control system (ash and slag removal program control system), Coal handling program control system, condensation Water refining treatment program control system, boiler make-up water treatment program control system, synthesis Water control system, boiler water sampling control system of air compressor, dosing control system Industrial wastewater management system ) adopt both PLC + host computer constitutes one Complete auxiliary monitoring