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Modeling and Simulation of Hydraulic Long Transmission Line by bond graph

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Journal of Mechanics Engineering and Automation 2013年第4期3卷 257-262页

作者： Dragan Prsie Novak Nedie Ljubisa Dubonjie Faculty of Mechanical Engineering Kraljevo University of Kragujevac Kraljevo 36 000 Serbia

This paper addresses the issue of modeling of the hydraulic long transmission line. In its base, such model is nonlinear with distributed parameters. Since general solution in closed-form for such model in time-domain is not available, certain simplifications have to be introduced. The pipeline in the paper has been divided to a cascaded network of n segments so that a model with lumped parameters could be reached. For segment modeling, a standard library of bond graphs element has been used. On the basis of models with lumped parameters, the effect of the number of segments, pipeline length and effective bulk modulus on the dynamics of long transmission line have been analyzed.

关键词： Long transmission line lumped parameters n segments bond graph

bond graph Modeling and Simulation of Thermal Equipment Based on Modelica

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Bond Graph Modeling and Simulation of Thermal Equipment Base...

bond graph及其在转子动力学上的应用

2012年计算机应用与系统建模国际会议

作者： Guoqing Zhu Gang Cheng Research institute of Equipment Simulation Technology Naval University of Engineering

bond graph was introduced to establish different domain system models by using numerable basic elements. Modelica is an object-oriented modeling language for multi-domain system unified modeling, which can compile simulation model for different modeling method, thus developing bond graph model by Modelica language is well suited for multi-domain unified modeling. In the present paper, bond graph library bondLib was introduced and improved. We use Deaerator system as an application example to show results on Dymola platform. The digital simulation results obtained from the bond graph model are validated with the operating characteristics.

关键词： bond graph Modelica modeling simulation

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中国科技信息 2017年第21期 74-76页

作者：唐佳敏刘洪里四川大学

本文论述了bond graph建模理论及其在转子动力学方面的建模要点(MTF与IC混合场)。以Jeffcott转子系统为例,分析了两种不同的Jeffcott转子系统的bond graph模型,并着重阐述了Pedersen提出的bond graph模型。选用实际的水轮机发电转子,将... 详细信息

本文论述了bond graph建模理论及其在转子动力学方面的建模要点(MTF与IC混合场)。以Jeffcott转子系统为例,分析了两种不同的Jeffcott转子系统的bond graph模型,并着重阐述了Pedersen提出的bond graph模型。选用实际的水轮机发电转子,将其简化为Jeffcott转子系统,利用Matlab设计算法,对比分析该发电转子的bond graph模型与Hamilton法的仿真结果。对比结果验证了水轮机发电转子的bond graph模型的准确性与优越性。

关键词：转子动力学建模理论 bond graph

基于bond graph的电机驱动转子系统振动特性研究

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微电机 2022年第3期55卷 1-5,10页

作者：邹小林王宾徐永刘洪里四川大学水利水电学院成都610065 四川水利职业技术学院羊马校区四川崇州611230 中国电建集团成都勘测设计研究院有限公司机电部成都610072

电机驱动的转子系统是工业领域中很常见的机电耦合系统,其动力学行为及振动特性是影响机电系统安全运行的重要因素。bond graph作为一种基于功率流的建模方法,对复杂的耦合系统动力学建模具有独特的优势。基于bond graph建立了电机驱动... 详细信息

电机驱动的转子系统是工业领域中很常见的机电耦合系统,其动力学行为及振动特性是影响机电系统安全运行的重要因素。bond graph作为一种基于功率流的建模方法,对复杂的耦合系统动力学建模具有独特的优势。基于bond graph建立了电机驱动转子系统的动力学分析模型,以该模型为基础仿真分析了机电耦合系统的动力学特性。结合转子试验台,研究了电机工况变化及不对中故障情况下,转子系统的振动特性变化规律。仿真结果与试验台实验结果相吻合,验证了该bond graph模型的准确性和有效性。

关键词： bond graph 机电耦合系统 Jeffcott转子振动特性

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Nonlinear State-Space Representations of a Quadrotor through bond-graph Technique

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Nonlinear State-Space Representations of a Quadrotor through...

Multi-level virtual prototyping of electromechanical actuation system for more electric aircraft

第24届中国控制与决策会议

作者： Vasfi E. Omurlu Ahmet Sagirli Ertan Haskoy Yildiz Technical University Mechatronic Engineering DepartmentBeikta Istanbul 34349 Yildiz Technical University Mechanical Engineering DepartmentBeikta Istanbul 34349 Turkiye

Obtaining efficient dynamic equations of complex systems, like processes or robotic systems, are very important for control system design. While various forms of acquiring motion equations exist, state-space form has its advantages for analyzing complex systems. Among analytical and graphical techniques of finding dynamic behavior of a system, bond-graph provides straight forward way of serving linear/nonlinear equations of systems in state-space form. In this study, a four-propeller-actuated full/reduced order quadrotor spatial dynamics are investigated by using bond-graph technique. Full order dynamic behavior is obtained including motor, gear, shaft, propellers and the body. Additionally, neglecting motor dynamics, reduced order state-space representations of the system is also provided, assuming force/moment input and propeller speed as inputs to the vehicle separately. Responses of the models are compared and discussed.

关键词： bond graph Nonlinear Equations Dynamic Modelling Differential Equations State Space

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Chinese Journal of Aeronautics 2018年第5期31卷 892-913页

作者： Jian FU Jean-Charles MARE Liming YU Yongling FU School of Mechanical Engineering and Automation Beihang University Institut Clement Ader (CNRS UMR 5312) INSA-Toulouse Flying College Beihang University

Electromechanical actuators（EMAs） are becoming increasingly attractive in the field of more electric aircraft because of their outstanding benefits, which include reduced fuel burn and maintenance cost, enhanced system flexibility, and improved management of fault detection and isolation. However, electromechanical actuation raises specific issues when being used for safetycritical aerospace applications like flight controls： huge reflected inertia to load, jamming-type failure, and increase of backlash with service due to wear and local dissipation of heat losses for thermal balance. This study proposes an incremental approach for virtual prototyping of EMAs. It is driven by a model-based system engineering process in order to enable simulation-aided *** practices supported by bond graph formalism are suggested to develop a model＇s structure efficiently and to make the model ready for use（or extension） by addressing the above mentioned issues. Physical effects are progressively introduced, and the realism of lumped-parameter models is increased step-by-step. In particular, multi-level component models are architected to ensure continuity between engineering activities. The models are implemented in the AMESim simulation environment, and simulation responses are given to illustrate how they can be used for preliminary sizing, control design, thermal balance verification, and faults to failure analysis. The proposed best practices intend to provide engineers with fast, reusable, and efficient means to assess performance virtually and enhance maturity, performance, and robustness.

关键词： bond graph Electromechanical actuator Flight control Model-based system engi-neering More electric aircraft Power-by-wire

Modelling and simulation of flight control electromechanical actuators with special focus on model architecting, multidisciplinary effects and power flows

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Chinese Journal of Aeronautics 2017年第1期30卷 47-65页

作者： Fu Jian Jean-Charles Maré Fu Yongling School of Mechanical Engineering and Automation Beihang University Beijing 100083 China Institut Clement Ader (CNRS UMR 5312) INSA-Toulouse Toulouse 31077 France

In the aerospace field, electromechanical actuators are increasingly being implemented in place of conventional hydraulic actuators. For safety-critical embedded actuation applications like flight controls, the use of electromechanical actuators introduces specific issues related to thermal balance, reflected inertia, parasitic motion due to compliance and response to failure. Unfortunately, the physical effects governing the actuator behaviour are multidisciplinary, coupled and nonlinear. Although numerous multi-domain and system-level simulation packages are now available on the market, these effects are rarely addressed as a whole because of a lack of scientific approaches for model architecting, multi-purpose incremental modelling and judicious model implementation. In this publication, virtual prototyping of electromechanical actuators is addressed using the bond-graph formalism. New approaches are proposed to enable incremental modelling,thermal balance analysis, response to free-run or jamming faults, impact of compliance on parasitic motion, and influence of temperature. A special focus is placed on friction and compliance of the mechanical transmission with fault injection and temperature dependence. Aileron actuation is used to highlight the proposals for control design, energy consumption and thermal analysis, power network pollution analysis and fault response.

关键词： bond graph Electro-hydrostatic actuator Electromechanical actuator More electric aircraft Modelling Power-by-wire Power loss Simulation

Structural Topology and Dynamic Response Analysis of an Electric Torque Vectoring Drive-Axle for Electric Vehicles

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Automotive Innovation 2022年第2期5卷 164-179页

作者： Junnian Wang Shoulin Gao Yue Qiang Meng Xu Changyang Guan Zidong Zhou State Key Laboratory of Automotive Simulation and Control Jilin UniversityChangchunChina

In-wheel motor-drive electric vehicles have the advantage of independently controllable wheel torque and the disadvantages of unsprung mass rise and power *** address the disadvantages,a centralized layout electric torque vectoring drive-axle system(E-TVDS)with dual motors is proposed,which can realize arbitrary distribution of driving torque between the left and right ***,the speed and torque distribution principle of E-TVDS based on velocity diagram are analyzed,and a virtual prototype of the whole vehicle with basic gear ratio relation model of the E-TVDS is built for simulation to verify the theoretical results and the basic effect of E-TVDS on the steering performance of the ***,the charac-teristics of 36 types of the novel E-TVDS topology structure are compared and analyzed,and the optimal structure scheme is ***,the accurate multiple degrees of freedom dynamic model for the optimal structure is established by using the bond graph method,and its dynamic response characteristics are *** results show that the vehicle equipped with the proposed E-TVDS can distribute the driving torque with the almost identical amount but opposite sign between the left and right wheels in any direction,and varying amount according to different chassis dynamics control requirements,and the torque response performance is great with little delay and *** function and dynamic response of the proposed E-TVDS show that it has potential application value for various performance improvements of electric vehicles.

关键词： Electric vehicle Torque vectoring Differential Structural topology bond graph

EXPERIMENTAL STUDY ON INFLUENCE OF SUPPLIED PRESSURE FLUCTUATION ON OUTPUT ARACTERISTIC OF PRESSURE CONTROL SYSTEM OF ROLLING MILL

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Chinese Journal of Mechanical Engineering 1998年第2期11卷 73-79页

作者： Zhao Jingyi Li Jiutong Wang Yiqun Yanshan University Yanshan Univ China

The infulence of supplied pressure fluctuation on output accuracy for the electro hydraulic pressure control system of the rolling mill is *** on the bond graph theory and experimental study,the relationship between the variation of system output pressure and the supplied pressure fluctuation and the influence of the system bandwidth on system output pressure are provided.A theoretical base for determining the allowable fluctuation range of pressure and accurate design of constant pressure source system is obtained.

关键词： Pressure fluctuation Pressure control system bond graph