福美鈉生產(chǎn)自動(dòng)控制系統(tǒng)的研發(fā)
[Abstract]:In recent years, with the increase of social demand, Fumet sodium production system has been launched in many companies. Siemens PCS7 is regarded as a new generation of modular process control system because it combines the advantages of traditional PLC and ordinary DCS. The system has high control performance and stable performance and has been widely used in industrial control system. The application of SIMATIC PCS7 system to the control of Fumer sodium production system can solve the control problems in the process of Fumet sodium production. Based on the background of a 30, 000 ton / year Fumet sodium production line in Ningxia, according to the control requirements of the system, Based on the SIMATIC PCS7 process control system, the automatic control system of the production line is developed. Firstly, according to the characteristics of Fumet sodium production process, the corresponding control requirements are analyzed reasonably, and the complete control scheme is given. For easily controlled variables, simple interlocking control or traditional PID control is used. Because the temperature control of reactor has the characteristics of nonlinear, strong coupling and large delay, the traditional control strategy is difficult to achieve satisfactory control effect. Therefore, the fuzzy PID self-tuning control strategy is proposed, and the simulation research is carried out. This control method not only maintains the advantages of small error and good stability of traditional PID control, but also has the characteristics of fast regulation speed and good follow performance of fuzzy control, thus achieving better control effect. Secondly, the software and hardware of the system are designed. According to the actual requirements of hardware equipment selection, a network-based hierarchical control system including centralized monitoring operation level and process control level is designed, and the power supply system and communication mode of the whole system are determined. Based on the SIMATIC PCS7 software platform, the hardware configuration, variable management, network configuration, automatic programming and the design of monitoring interface of the control system are carried out in the engineer station. The control program is mainly realized by the CFC function block. After the engineer station content is completed, the configuration content is downloaded to each operator station, and then the operator station item is downloaded to the redundant server. Finally, the field debugging of the whole project is carried out, the project is put into production smoothly, and it runs stably, and achieves the expected design goal.
【學(xué)位授予單位】:濟(jì)南大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2017
【分類號(hào)】:TQ261.1;TP273
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