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bond-graph
相关语句
  键合图
    Qualitative bond-graph based fault diagnosis for liquid-propellant rocket engine
    液体火箭发动机基于定性键合图模型的故障诊断方法研究
短句来源
    By the integration of the qualitative-model-based diagnosis method and the bond-graph theory that is effective on modeling dynamic systems,a qualitative bond-based fault diagnosis method for a large turbo-pump fed liquid-propellant rocket engine (LRE) is proposed.
    结合基于模型知识的诊断推理方法和键合图理论在定性建模方面的优点,提出并研究了液体火箭发动机基于定性键合图模型的故障诊断方法。
短句来源
    At first the qualitative bond-graph model for LRE is constructed,then the diagnosis mechanism based on the model is formulated,at last the diagnosis results are verified correctly by the simulated data and the analysis of the results is presented.
    以某大型泵压式液体火箭发动机为研究对象,建立了其定性键合图模型,给出了基于此类定性模型的故障诊断机制,并利用仿真数据验证了诊断结果,对该方法及其结果进行了详细的分析。
短句来源
  键合图模型
    Qualitative bond-graph based fault diagnosis for liquid-propellant rocket engine
    液体火箭发动机基于定性键合图模型的故障诊断方法研究
短句来源
    By the integration of the qualitative-model-based diagnosis method and the bond-graph theory that is effective on modeling dynamic systems,a qualitative bond-based fault diagnosis method for a large turbo-pump fed liquid-propellant rocket engine (LRE) is proposed.
    结合基于模型知识的诊断推理方法和键合图理论在定性建模方面的优点,提出并研究了液体火箭发动机基于定性键合图模型的故障诊断方法。
短句来源
    At first the qualitative bond-graph model for LRE is constructed,then the diagnosis mechanism based on the model is formulated,at last the diagnosis results are verified correctly by the simulated data and the analysis of the results is presented.
    以某大型泵压式液体火箭发动机为研究对象,建立了其定性键合图模型,给出了基于此类定性模型的故障诊断机制,并利用仿真数据验证了诊断结果,对该方法及其结果进行了详细的分析。
短句来源
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  bond-graph
Prototype and instance manifestations get a semi-qualitative representation and symptoms refer to means-end and bond-graph entities in a new approach, suited to human diagnostician's conceptual view.
      


Bond graphs have been shown to be useful in modeling of a wide variety of physical dynamic systems.A unique feature of bond-graph techniques is that they provide the modeler with a graphical representation of the causality (i.e.the input-output relationships)in the underlying system.In this paper,bond graphs of variable-thrust rocket engine system are developed and governing state space equations are derived.

简要介绍利用键图建立数学模型的原理。针对BYF-03双组元液体推进剂变推力火箭发动机系统,画出该系统的键图,并列出用状态变量表示的数学模型。

Dynamic modelling of the complex spacecraft system is important. If it could be established rapidly, simply and truly, and also could be expediently connected with the model of other subsystem by the same kind of method, the efficiency and reliability of the system design will be greatly raised. Bond Graph is a new method of dynamic modelling. The fundamental idea of dynamic modelling of complex spacecraft system using Bond Graph theory, and the procedure of using Lagrange Bond Graph are discussed. As an example,...

Dynamic modelling of the complex spacecraft system is important. If it could be established rapidly, simply and truly, and also could be expediently connected with the model of other subsystem by the same kind of method, the efficiency and reliability of the system design will be greatly raised. Bond Graph is a new method of dynamic modelling. The fundamental idea of dynamic modelling of complex spacecraft system using Bond Graph theory, and the procedure of using Lagrange Bond Graph are discussed. As an example, the establishment of dynamic equation for a satellite with moment wheel and elastic appendages is demonstrated. Using this method, the vector system equation appllicable to simulation can be established, and numeric simulation can also be conveniently conducted.

建立复杂航天器系统的动力学模型是航天器系统设计的一项重要内容 .能够快捷准确地完成这一工作 ,并可以方便地用同一种表述方法将这一模型与其他分系统的模型连接起来 ,将大大提高总体设计的效率及可靠性 .键图是一种完成动力学建模的一种新方法 .介绍了键图理论应用于建立复杂航天器系统的动力学模型的基本思想以及拉格朗日键图的具体应用步骤 .以带有动量轮和弹性附件的卫星为例 ,演示了其动力学方程的建立过程 .利用这种方法可以有效地得到适用于仿真的向量系统方程 ,也便于直接进行数字仿真

This paper introduces basic theory of the bond graph,and by using the theory,fault diagnosis for space propulsion system is studied.The analysis shows that the wethod has following advantages in fault diagnosis of space propulsion system:simple modeling,intuitive model,easy fault locating.It is a new way to diagnose liquidrocket engine.

介绍了键合图基本理论,并利用其理论对空间推进系统进行了故障诊断研究。结果表明利用键合图模型诊断液体火箭发动机故障,具有建模简单,模型直观,故障定位方便等优点,是液体火箭发动机故障诊断的一个新途径。

 
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