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本文用近代频域法中的特征轨迹法(简称 CL 法)对多变量给水泵控制系统进行了探索。用 CL 法对 DG—450—180型液压联轴节调速给水泵在变压运行200MW 机组存在的两变量系统进行了综合、仿真,验证了控制系统的稳定性、准确性、完整性、以及鲁棒性等各项指标。为完成上述工作,编制了由1300多条 FORTRAN 语句组成的通用程序,解决了用程序自行判定系统稳定性等问题。为了解决CL 法在热工系统控制的应用,进一步分析并提出了补偿阵的的补偿点的选取依据及其限制条件,推导了鲁棒性在 CL 法中的表达式并阐述了鲁棒性和控制系统其它性能的关系。
In this paper, we use the characteristic locus method (CL method) in modern frequency domain method to explore the control system of multivariable feed pump. The method of CL was used to synthesize and simulate the two-variable system of DG-450-180 hydraulic coupling speed control feed pump in the transformer operated 200 MW unit, which verified the stability, accuracy, completeness of the control system and Robustness and other indicators. In order to accomplish the above work, a general program composed of more than 1,300 FORTRAN statements has been compiled, which solves the problems of using the program to determine the stability of the system by itself. In order to solve the application of CL method in thermal system control, we further analyze and propose the basis for selecting the compensation point of compensation array and its limitation conditions, and derive the expression of robustness in CL method and expound the robustness and Control the relationship between other performance of the system.