基于果蝇算法的过热汽温自抗扰优化控制  

Active disturbance rejection control for superheated steam boiler temperatures using the fruit fly algorithm

作　　者：孙立[1] 董君伊[1] 李东海[1] 

机构地区：[1]清华大学热能工程系,电力系统及发电设备控制和仿真国家重点实验室,北京100084

出　　处：《清华大学学报（自然科学版）》2014年第10期1288-1292,共5页Journal of Tsinghua University(Science and Technology)

基　　金：国家自然科学基金资助项目(51176086)

摘　　要：锅炉过热汽温的动态特性会随运行工况发生较大变化,传统的控制方法难以达到理想的控制性能。该文基于线性自抗扰控制器设计串级优化控制方案,根据现有的比例-积分-微分(PID)控制器参数计算自抗扰控制器参数初值,进而基于改进的优化指标,采用果蝇算法优化出一组适用于不同工况的固定控制器参数。仿真结果表明:该方案能够很好地平衡快速性与稳定性的矛盾,且具有更好的性能鲁棒性。Control of the boiler superheated steam temperature is a typical large inertia process whose dynamics tend to change significantly as the operating point varies. Thus,conventional control systems cannot provide satisfactory dynamic control.An optimized cascaded control scheme is given here based on a linear active disturbance rejection controller,whose initial values can be determined from the existing proportional-integral-derivative（PID）parameters.The fruit fly algorithm with a modified index is used to optimize the controller parameters to be suitable for different operating conditions.Simulations demonstrate that the strategy balances the paradox between rapid and stable responses and is more robust than the conventional method.

关 键 词：过热汽温 自抗扰控制 果蝇优化 鲁棒性 

分 类 号：TK323[动力工程及工程热物理—热能工程]