PFBC_CC中燃气轮机的动态特性与系统控制方案研究

本文建立了ＰＦＢＣ－ＣＣ中使用两种不同的轴系的燃气轮机动态数学模型，并进行了仿真，得到了燃气轮机的动态特性。在此基础上，应用阶跃响应辨识法获得了ＰＦＢＣ－ＣＣ系统主要通道的传递函数矩阵。本文应用多变量鲁棒设计方法被控对象进行了鲁棒控制系统设计。通过闭环摄动系统的仿真，求出闭环摄动系统当存在着结构摄动时的阶跃响应。仿真结果表明：用该方法设计的控制系统具有良好的鲁棒性能，满足了被控系统的各项要求。

A Study on Dynamic Characteristics of Gas Turbines of PFBC CC and System Control Versions

By setting up a dynamic mathematical model for two different shafting gas turbines of PFBC CC and conducting their simulation obtained are the dynamic characteristics of the gas turbines. On this basis the use of a step response identification method resulted in the obtaining of a transfer function matrix for the main channels of the PFBC system. A multivariable robust design method was used to perform the robust control system design of a controlled object. By way of the simulation of a closed loop perturbation system the authors determined the step response of the closed loop perturbation system in the presence of a structural perturbation. The simulation results have shown that the control system designed by using the above cited method features fine robust performance, thus meeting the various requirements of the controlled system.