| 1. | Research on power bond graph model of hydraulic steering system
4135柴油机燃烧过程数值模拟的研究 |
| 2. | Dynamics analysis of a hybrid driving five - bar linkage based on power bond graph
基于功率键合图的混合驱动五杆机构动力学分析 |
| 3. | But the complicated derivation process from power bond graph to state equation made the popularization of the techique restricted
但从功率键合图推导状态方程这一复杂繁琐的过程使得这一技术的推广受到限制。 |
| 4. | It has been widely recognized by the engineering technical personnel that using the method of power bond graph modeling to study the dynamic characteristics of system
采用功率键合图建模的方法对系统的动态特性进行研究已经引起了工程技术人员的广泛关注。 |
| 5. | Besides those , considering the complexity of hydraulic system , the paper establishes the mathematical model by the method of power bond graph
除此之外，考虑到液压系统动态分析的复杂性，本文利用功率键合图的方法，建立了风力机变距液压系统部分的数学模型。 |
| 6. | Especially with the successful application of power bond graph modeling technique in the dynamic performance analysis of hydraulic system , the researches in this field have been advanced greatly
特别是功率键合图建模技术在液压系统动态特性研究领域中的成功应用，为其提供了强有力的技术手段，大大推动了这方面研究工作的进展。 |
| 7. | 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。 |
| 8. | 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。 |
| 9. | Power bond graph is used to established the bond graph model of the lifting and dropping of hydraulic pile hammer and state space equation in the paper for hydraulic pile hammer is perplexing nonlinear system . in order to attain the graph that pressure , position , velocity , acceleration vary with time in the course of driving pile simulation procedure solving state space equation is designed on the basis of combining four - order runge - kutta method with predicator - corrector method , dynamic simulation of the hydraulic system is studied in matlab 6 . 5 . it is convenient to analyse dynamic characteristics of the hydraulic syste m , beneficial to the design and parameter optimization of the hydraulic system . in the final part of the paper , under detailed analysis of the control characteristics for double - acting hydraulic pile hammer with double cylinders , control system based on the programmable logic controllers founded on technology of modern compute is designed
由于液压打桩锤液压系统是一个复杂的非线性系统，本文采用功率键合图法建立液压打桩锤上行、下降的键合图模型和状态空间方程，通过四阶龙格?库塔法和预估?校正法相结合编制了仿真程序对状态空间方程求解，在matlab6 . 5中进行液压系统的动态仿真，获得液压打桩锤运动过程中压力、位移、速度、加速度等随时间变化的曲线图。此曲线图方便了对液压系统动态特性分析，为液压系统的设计和参数优化提供了有益的借鉴。最后，在深入分析双缸双作用液压打桩锤控制系统的功能要求后，采用了以现代计算机技术为基础的新型工业控制装置? plc可编程控制器，设计出了双缸双作用液压打桩锤的电器控制系统。 |
| 10. | A reasonable choice among the factors affecting on the fluid drive system are made , established the static and dynamic mathematical models system by mean of the power bond graphs . on the basis of modifying the original digital simulation program , the digital simulation study is made
对系统的各元件进行了详细的分析、依据系统工况要求和元件在系统的功用对其模型进行了合理的取舍；遵循功率流向，采用先进的功率键合图?状态空间法技术建立了系统的静、动态数学模型。 |
