THE NONLINEAR MODEL OF HYDRAULIC TURBINE GOVERNING SYSTEMS AND ITS PID CONTROL AND Hopf BIFURCATION
THE NONLINEAR MODEL OF HYDRAULIC TURBINE GOVERNING SYSTEMS AND ITS PID CONTROL AND Hopf BIFURCATION
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发表时间：
2005
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通讯作者：
Shen Zu-yi
中科院分区：
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作者：
Shen Zu-yi
在理论分析的基础上，提出了一种物理意义明确、便于理论分析和计算机计算的液压机电系统非线性模型。最后，利用Hopbubilization存在的直接代数判据，研究了以PID参数为分岔参数的非线性模型的分岔行为。模拟结果表明，本文的结果可以作为水电站持续振荡的解释之一。
Based on the theoretical analysis, a nonlineamodel of hydraulic-mechanical-electro systems is presentedwhich has clear physical meanings and is easy to be analyzedtheoretically and calculated by computer. By using the GA-basedPID controller, the control parameters are optimized and thecontrol performances are improved according to the simulationsFinally, the direct algebra criterion about the existence of Hopbifurcation is used to investigate the bifurcation behavior of thenonlinear model which takes the PID parameters as thebifurcation ones. The simulations show that the results of thispaper can be considered as one of the explanations to sustainedoscillations recorded in hydroelectric power station.