中文摘要：

摘要：为了提高火电厂中静电除尘器的稳定性、可靠性、自动化水平，采用了高性能施耐德Twido可编程控制器（PLC）以及Twidosoft编程软件，设计了电除尘器电机振打控制方案，编制了振打控制梯形图程序；当沉降室侧壁振打3分钟，停7分钟；第一电场振打2分钟，停8分钟；第二电场振打2分钟，停18分钟；第三电场振打2分钟，停28分钟时，振打效果较好；运行结果表明：采用Twido可编程控制器之后，实现了电机振打的自动运行，与传统继电器振打控制系统相比，可靠性高，稳定性好，除尘效率高，粉尘排放浓度低于50mg／m3，为火电厂静电除尘器电机振打系统的自动控制提供了新的方法。

英文摘要：

Abstract： In order to improve reliability, stability and automation of the electrostatic precipitator in heat--engine plant, using Schneider Twido PLC with high performance and programming software of Twidosoft , designing control plan of vibration motor for cement dust ESP, drawing up vibration control ladder diagram program. When gravity separator room works for 3 minutes, then stops for 7 minutes; the 1st electric field works for 2 minutes, then stops for 8 minutes; the 2nd electric field works for 2 minutes, then stops for 18 minutes; the 3rd e- lectric field works for 2 minutes, then stops for 28 minute~ the result of vibration is better. Operational results show that, after adopting Twido PLC, vibration motor realised to run automatically; compared with traditional vibration control system based on relay, it has higher reliability, better stability and effect of dust rernovaling, dust emission concentrations 〈_- 50mg/m3 , provideing a new method for vibration control of ESP in heat--engine plant.