In the aviation realm , the train about the system principle and the debug logic , is the important part in teaching and training , which is according to the principle of the system or the circuit and so on 在航空领域,对飞机中系统原理图、电路原理图等工作原理和排故逻辑图的讲解是培训和教学的主要内容之一。
But because of the complexity of this kind system principle and the difference of the research emphases , now the theoretical researches and analysis methods of the prestressed cable truss are in disorder and have their novelty 由于该结构体系原理的特殊性和研究重点的不同,导致目前现有的研究理论和成果分布极为零乱且各具特点。
In general , by utilizing observing instrument , estimates of systemvariable are obtained ; and the minimal energy control system principle isused to control the supply pressure so as to attain the goal of economizedconstant pressue water supply 概括地说,就是应用观测器,得到了状态变量的估计值,并按最小能量系统控制规律控制供水k力,达到了恒压供水的目的。