After elaboratedly analysizes components of this system , a reasonable choice among the factors affecting the pump test platform system is made and mathematical models are built by means of the power bond graphs 对系统的的元件进行了详细的分析，依据其工作过程和系统的功用对其模型进行合理的取舍后，用功率键合图方法建立了系统的数学模型。
However , as a convenient tool for modeling the dynamic procedures of multiple energy systems , the bond graph serves as an ideal alternative to unify the ev components with different physical as well as chemical attributions 利用现代控制工程很难将它们组合在一起，而作为研究多能源系统动态特性方法之一的键合图法却能很方便的把它们统一起来。
This technique is not limited to model the permanent magnet brushless dc motor ( pmbldcm ) , and can be easily extended to other kinds of motors . the dynamic performance simulation is accomplished with the aid of matlab / simulink 因此利用键合图法对电机进行建模有其自身的特色和优点，除了能方便的得到电机自身的模型外，为以后与电动汽车的其它模块方便的连接起来奠定了基础。
In the practice of scientific research item , the author applies the theory of bond graph to the modeling of the battery of ev after further researching , and has received the very good effect , also opens up the new train of thought of the battery modelling and simulation 作者在参与科研项目的实践中，通过深入研究，将键合图( bondgraph )理论应用到蓄电池的建模中，收到了很好的效果，开辟了蓄电池建模仿真的新思路。
It regards a hydraulic component as the basic treatment object or the bond graph model partition unit . according to the common modularization characteristic between hydraulic system and bond graph , the hydraulic component entity class library and its corresponding model description library are established 在对已有液压原理图建模方法比较分析的基础上，本文完整性地提出了一种基于键合图技术的液压原理图可视化建模方法。
The main content of the paper is a part of the department of education ' s issue " computer simulation and software design of the drive system of hybrid electric vehicle " . making use of bond graph method to simulate the motor of hybrid electric vehicle is discussed emphatically in this paper 本文所做的工作是教育部课题“混合动力电动汽车驱动系统计算机模拟及设计软件开发”的一个组成部分，主要是利用键合图法对混合动力电动汽车电机进行建模与仿真。
In this dissertation , the author builds up mathematical model of electro - hydraulic load simulator system . and it also builds up model of p - q servo - valve and complete system based on bond graph theory , which consider the nonlinear of orifices and real - time changing characteristic of liquid capacity in the cylinder chambers 论文建立了电液负载模拟器的数学模型,同时,基于键图理论考虑阀口流量非线性和液压缸液容的时变特性,建立p - q伺服阀和全系统的键合图。
Secondly , introduce the basic theory of the bond graph , show out the advantage of simulating the characters of multi - power and multi - type of hev using bond graph . in order to test this point , i analyze the driving system of honda insight and toyota prius based on the application of bond graph , and establishes the mathematic models . the matlab / simulink is used to visual programming it 为了用事实来进一步说明使用键合图理论对混合动力电动汽车系统建模的优越性，我们使用键合图理论对两种典型的混合动力电动汽车：本田的insight和丰田的prius进行了分析，分别建立了键合图模型，并通过matlab simulink软件进行了可视化编程。
The software can automatically deducate the character state equation from the power bond graph input by user , then put the result and parameters input by user into the ode file which is required by matlab . matlab can solve the ode file with numerical solution method of ordinary differential equation . so the timedependent solution of system parameters can be gained 该软件从用户输入的功率键合图入手，自动推导出系统的字符型状态方程，并将推导结果同用户输入的各种参数一起输入到matlab所要求的ode文件中，然后采用matlab所提供的常微分方程数值解法对该ode文件求解，从而得到系统各主要参数的时域解。
The dissertation includes the following contents : the research on the whole makeup technique of visual modeling environment of hydraulic system ; the study on visual modeling technique of hydraulic principle figure ; the study on graphics modeling technique of bond graph ; the study on automatic modeling technique of bond graph with non - standard junction structures ; the design and development of the general purposed simulation software of hydraulic system 本文的研究工作主要有以下几个方面：液压系统可视化建模环境总体组成技术研究；面向液压原理图可视化建模技术研究；键合图图形建模技术研究：非标准键合图自动建模技术研究；液压系统动态仿真通用软件系统的设计开发。
