{"title":"基于PLC的ICRH实验离线阻抗匹配系统集成","authors":"R. Joshi, H. M. Jadav, A. Mali, S. Kulkarni","doi":"10.1109/IC3I.2016.7918027","DOIUrl":null,"url":null,"abstract":"Ion Cyclotron Resonance Heating (ICRH) system has two different impedance matching systems for RF transmission. One is offline matching which has been used before applying the experimental shots. Another is online impedance matching which has been used during experimental shot. Offline matching network consists of two coarse tuner, static stubs and coarse phase shifter which are identical in both the transmission lines. There are motorized arrangement installed in each stubs and phase shifters. Both static and coarse stubs are used to vary length in order to match the source impedance with load impedance. Phase shifter is used for matching impedance via varying the phase of the power. Programmable Logic Controller (PLC) based instrumentation has been implemented for the system. Offline matching should be operated below 1 kHz frequency in order to move stepper motors using square pulses employed to motor controller. In existing system this operation has been carried out by VME instrumentation and control. In order to reduce load on VME, PLC based system has been designed and integrated with VME based DAC. SIMATIC Windows Control Center (WinCC) software has been used as SCADA i.e. front end user interface. WinCC SCADA can communicate with OPC (Open Process Control) server using different PLC signals. This paper describes technical details, design and development of PLC based offline impedance matching system using WinCC as SCADA. The developed system has proved accurate and reliable in use of application as per system requirement. The SCADA system also shows motor frequency and motor speed profile with upper and lower limits. It logs data at the end of operation by which it retrieve the last run status of each motor when it starts again.","PeriodicalId":305971,"journal":{"name":"2016 2nd International Conference on Contemporary Computing and Informatics (IC3I)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Integration of PLC based offline impedance matching system for ICRH experiments\",\"authors\":\"R. Joshi, H. M. Jadav, A. Mali, S. Kulkarni\",\"doi\":\"10.1109/IC3I.2016.7918027\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Ion Cyclotron Resonance Heating (ICRH) system has two different impedance matching systems for RF transmission. One is offline matching which has been used before applying the experimental shots. Another is online impedance matching which has been used during experimental shot. Offline matching network consists of two coarse tuner, static stubs and coarse phase shifter which are identical in both the transmission lines. There are motorized arrangement installed in each stubs and phase shifters. Both static and coarse stubs are used to vary length in order to match the source impedance with load impedance. Phase shifter is used for matching impedance via varying the phase of the power. Programmable Logic Controller (PLC) based instrumentation has been implemented for the system. Offline matching should be operated below 1 kHz frequency in order to move stepper motors using square pulses employed to motor controller. In existing system this operation has been carried out by VME instrumentation and control. In order to reduce load on VME, PLC based system has been designed and integrated with VME based DAC. SIMATIC Windows Control Center (WinCC) software has been used as SCADA i.e. front end user interface. WinCC SCADA can communicate with OPC (Open Process Control) server using different PLC signals. This paper describes technical details, design and development of PLC based offline impedance matching system using WinCC as SCADA. The developed system has proved accurate and reliable in use of application as per system requirement. The SCADA system also shows motor frequency and motor speed profile with upper and lower limits. 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引用次数: 1
摘要
离子回旋共振加热(ICRH)系统具有两种不同的射频传输阻抗匹配系统。一种是在应用实验镜头之前使用的离线匹配。另一种方法是在线阻抗匹配,该方法已在实验射击中得到应用。离线匹配网络由两个粗调谐器、静态存根和粗移相器组成,它们在两根传输线上相同。在每个存根和移相器上安装有电动装置。为了使源阻抗与负载阻抗相匹配,静态桩和粗桩都用来改变长度。移相器通过改变电源的相位来匹配阻抗。系统实现了基于可编程逻辑控制器(PLC)的仪器仪表。离线匹配应低于1khz频率操作,以便使用电机控制器使用的方波脉冲移动步进电机。在现有的系统中,该操作是由VME仪表和控制来完成的。为了减少VME的负载,设计了基于PLC的系统,并将其与基于VME的DAC集成在一起。SIMATIC Windows控制中心(WinCC)软件被用作SCADA,即前端用户界面。WinCC SCADA可以使用不同的PLC信号与OPC (Open Process Control)服务器通信。本文介绍了以WinCC作为SCADA的基于PLC的离线阻抗匹配系统的技术细节、设计与开发。经实际应用证明,所开发的系统准确可靠,符合系统要求。SCADA系统还显示了电机频率和电机速度的上下限。它在操作结束时记录数据,通过它检索每个电机再次启动时的最后运行状态。
Integration of PLC based offline impedance matching system for ICRH experiments
Ion Cyclotron Resonance Heating (ICRH) system has two different impedance matching systems for RF transmission. One is offline matching which has been used before applying the experimental shots. Another is online impedance matching which has been used during experimental shot. Offline matching network consists of two coarse tuner, static stubs and coarse phase shifter which are identical in both the transmission lines. There are motorized arrangement installed in each stubs and phase shifters. Both static and coarse stubs are used to vary length in order to match the source impedance with load impedance. Phase shifter is used for matching impedance via varying the phase of the power. Programmable Logic Controller (PLC) based instrumentation has been implemented for the system. Offline matching should be operated below 1 kHz frequency in order to move stepper motors using square pulses employed to motor controller. In existing system this operation has been carried out by VME instrumentation and control. In order to reduce load on VME, PLC based system has been designed and integrated with VME based DAC. SIMATIC Windows Control Center (WinCC) software has been used as SCADA i.e. front end user interface. WinCC SCADA can communicate with OPC (Open Process Control) server using different PLC signals. This paper describes technical details, design and development of PLC based offline impedance matching system using WinCC as SCADA. The developed system has proved accurate and reliable in use of application as per system requirement. The SCADA system also shows motor frequency and motor speed profile with upper and lower limits. It logs data at the end of operation by which it retrieve the last run status of each motor when it starts again.