城市集中供热系统热流量优化分配研究  

Research on optimal heat flow distribution in urban central heating system

作　　者：杨伟东[1] 徐宵伟 贾鹏飞[1] 马媛媛[1] 何晓东[1] 

机构地区：[1]河北工业大学机械工程学院,天津300130

出　　处：《河北工业大学学报》2017年第1期53-58,共6页Journal of Hebei University of Technology

基　　金：河北省自然科学基金(E2016202297)

摘　　要：集中供热系统流量的质调节和量调节之间耦合关系是制约其控制性能的关键问题,供热系统也存在滞后性、时变性以及参数的不确定性等因素.针对以上问题,采用一种改进的专家模糊PID控制方法对质量并调供热方式进行解耦控制.为了提高模糊PID控制器的精度,采用专家系统对模糊控制的量化因子进行优化.最后对改进后的专家模糊PID控制器进行了仿真验证,结果表明改进的专家模糊PID控制器较常规的模糊PID控制器不仅能实现供热网管质量并调控制的解耦,还具有更好的动态特性.The coupling relationship between qualitative regulation and quantitative regulation in the central heating system has been a key problem to its control performance. There also exist hysteresis, time variability and parameter uncer-tainty and other factors affecting the central heating system. To solve the above problems, an improved expert fuzzy PID control method is proposed to decouple the collaborative control mode. To further improve the accuracy of the fuzzy PID controller, the expert system is used to optimize the quantization of factor. Finally, the improved expert fuzzy PID controller is simulated and verified. As the simulation results show, compared with the conventional fuzzy PID controller, the improved expert fuzzy PID controller can not only realize the decoupling control between qualitative regulation and quantitative regulation of the central heating system, but also have better dynamic characteristics.

关 键 词：集中供热 解耦控制 专家控制 模糊PID控制 

分 类 号：TP202.7[自动化与计算机技术—检测技术与自动化装置]