协调控制系统模糊PID参数在线整定的仿真研究

摘要

为解决超临界直流锅炉协调控制系统被控对象特性复杂、控制难度较大的问题，通过采用模糊控制技术实现控制器参数在线整定将被控参数控制在理想范围之内。仿真研究采用Matlab作为第三方数据处理平台，用于模糊控制器设计，采用EDPF-NT+组态软件搭建了协调控制系统对象模型，并采用Modb-us通讯协议实现两侧数据通信，仿真结果实现了协调控制系统中锅炉主控制器积分参数的在线模糊整定，将机组主蒸汽压力控制在理想范围内，验证了模糊控制器设计的合理性和正确性。%In order to solve the problem caused by the complex characteristics of supercritical once-through boiler in coordinated control system, the fuzzy control technology is used to realize the ideal range by the way of parame-ters on-line tuning. Using MATLAB as a third data processing platform for fuzzy controller design, the configuration software EDPF-NT+ is applied to build the object model of the coordinated control system. Besides, the Modbus protocol is applied to realize the data communication. The design realizes the fuzzy on-line tuning of integral param-eters of main boiler controller in coordinated control system, and maintains the main steam pressure in a stable range, and verifies the rationality and correctness of the fuzzy controller.