1、 毕 业 设 计 外 文 文 献 译 文 及 原 文 学 生： 学 号： 200601020106 院 （系）： 造纸工程学院 专 业： 过程装备与控制工程 指导教师： 2010 年 6 月 10 日 本科生毕业设计外文翻译 1 外文原文 Wincc in Heating Supply Stations Monitoring System System uses Automatic Frequency Control regulation or pump motor speed. Plus or minus pump.It is primarily by the Frequency Contr
2、ol System.PID regulator,pressure sensors,liquid level sensor power control circuits and other conponents.Host users control system or control board light over-the-counter transactions,buttons,switchto understand and control systen operation,Based on the PID control mode,the operator interface settin
3、gs in water pressure,PLC to pressure settings and measured valucs for the deviation PID operation and regulation of distribution through inverter pump speed,so that water pressure was maintained at the set value. 1. Systen hanlware configuration The system uses Siernens S7-200 PLC and its configurat
4、ion software constitute a constant WinCC V6.0 Water pressure control system,water pressure monitoring process.Industroal Ethernct controller for PLC and the operator station computer communication betwween the Remote I/O network for the PLC and the operator station compuler communication betwween th
5、e Remote I/O network for the PLC controller and inverter,the soft starter of communication betwween equipment.PLC controller mainly used to monitor and control water and electricity systems.For1#-4#pressurized pump converter using the ABB Acs510-01-031A4 inverter,HMI operatostation selection DELL co
6、nputers,conputer,Industrial Ethernet server card Siemens conmmunications company CP1612. 2. Software design of Systen The control system software company Siemens PCS7V5.2 package,STEP7V5.2 PLC controller mainly used to monitor and control water and electricity systems.For 1#4# pressurized pump conve
7、rter using the ABB ACS510-031A4 inveter,HMI operatorstation selection DELL puter,Industrial Ethernet server card Siemens communications company Cp1612 3. Software design of System The control system software company Siemens PCS7V5.2 package.STEPV5.2 PLC controller.HMImonitoring system used WinCCV6.0
8、 version.HMI server and operating station are using the Windows2000 operating system to have an open programming environment.Heating Sation Wincc configuration control software maior constant pressure water system and coal Gallery in two parts.Implemention of the system of automatic detection and au
9、tomatic control.Detection constant pressure 本科生毕业设计外文翻译 2 water and coal Gallcry equipment operation parameters.the real-time data acquisition.uploads.real-time data acquisition.uploads,real-time display and recording.Ciontrol unit operation.fault alarm and automatic parking operation .Theconstant p
10、ressureof water supply pressure system configuration parameters.real-time monitoring regulatory pressure pumps water pressure and so valued.CoalHanding Gallery in to control the volume.of coal to speed,to monitor the quality of coal (coal crushing degree of quality and impurity) PLC-Based Fuzzy Cons
11、tant water Supply System Design Constant 1. pressure water system components From the water supply system programmable controller, inverter, pressure transmitter and the constact group on the pump unit and other components Programmable controller selection of AB ControlLogix system.It includes Logix
12、5550 controller analog input modules,digital input and output modules and communication modutes.Which analog input modute used to test the water pressure on the export signal,digital input module and valves Kai stopped.Inverselection of AB 1336 Plus Inverter.Inverter and Devi2 cenet controller thtou
13、gh the network for communication. 2. Constant Pressure Water Principle The outlet channel of pressure sensor installation will export water pressure signals are converted to electrical signals, send PLC fuzzy inference operation, the output control signals to the converter, regulating the operation
14、of pump motor speed, until the actual elimination of hydraulic pressure and set the deviation, constant voltage supply. Programmable controller can control pumps Kai stopped. When the system started working, inverter control from start on 1st pump frequency operation. If users increased consumption
15、of the converter output frequency up to 50 Hz, the pressure will still be less than the set value, then after some time delay, on the 1st of the pump switching frequency operation； Inverter start again on the 2nd pump operation. If pressure is less than the set value, they will be on the 2nd to pump
16、 switching frequency operation； Inverter start again on the 3rd pump operation until the output pressure settings to achieve so far. However, if users to reduce water consumption, in accordance with the “Kai-stop” principle will be followed with pumps. This cycle repeatedly to achieve constant press
17、ure water system. 3. Fuzzy2PI control algorithm As the water supply system in many areas (such as the pipe network and pumps) nonlinear, time-varying, and the variables still exist between the cross-coupling, so it is difficult to establish a precise mathematical system model. For such a complicated process that merely using the conventional PID control is difficult to achieve the desired control. Fuzzy control is not dependent on the mathematical model and the right parameters sensitive to the merits, Fuzzy used to control the water supply system, we can
