【作者】 宋晓光；

【导师】 赵福令；

【作者基本信息】 大连理工大学 ， 机械电子工程， 2007， 硕士

【摘要】 工作平台调平技术是高空作业车特有的关键技术之一，随着高空作业的高度增大，对调平系统的各项性能要求就越严格。本文以北京京城重工GTBZ系列30米自行伸缩臂式高空作业车为背景，实现了电液比例调平系统的仿真研究，提出了结合多种软件对电液调平系统进行机械、液压以及控制整体模型建立的方法，通过对数学模型的分析以及试验数据的对比，验证了该模型的正确性。通过对仿真模型参数的改变，得出影响工作平台角度偏差的因素，为产品的设计提供了方法和理论依据。本文主要从以下方面进行研究：(1)研究多种调平机构及其液压系统，并对30米高空作业车电液调平系统进行了匹配计算和元件选型。(2)根据电液比例基本理论，运用传递函数方法研究并建立了电液比例调平系统数学模型，采用频域分析方法确定系统的稳定性，并讨论了影响系统动态特性品质的各个因素。(3)电液比例调平系统联合仿真的研究。通过MSC.ADAMS软件建立了调平系统的机械和液压模型，将该模型调用到Matlab／Simulink环境下建立了电液闭环控制，实现了机械-液压-控制的电液比例调平系统动力学仿真。(4)仿真分析了影响工作平台角度偏差的主要因素，为设计提出了一些具有实际参考价值的建议，并将仿真结果与双油缸串联调平方式进行了对比分析。(5)通过对调平系统试验的研究，将采集的试验数据与仿真结果进行了对比，验证了仿真模型的合理性，同时也说明了采用多软件联合仿真进行分析的可行性，为高空作业车向更大高度的研发提供了科学便捷的途径。更多还原

【Abstract】 Working platform level technique is one of the key techniques in the aerial work platform which needs more accurate in its performance as the accretion of working height. Taking Beijing heavy industry Co. Ltd GTBZ series thirty- meter aerial work platform as background, the electro-hydraulic proportional level system simulation research is achieved and a method of building whole model is brought forward which combines with multi-software to build mechanism, hydraulic and control model. According to mathematics model analysis and comparison with test data, this method is feasible and reasonable. By changing parameters of simulation model, main factors of influence working platform obliquity are gained which provide method and theory reference for production design. In this paper, the following contents are included:(1) Various kinds of level mechanism and their hydraulic systems are researched and electro-hydraulic proportional level system matching calculation is achieved and components are selected of thirty -meter aerial work platform.(2) Electro-hydraulic proportional level system simulation model is built according to transfer function based on electro-hydraulic proportional theory. System stability is ensured by frequency analysis. And various factors of influence system dynamic characteristic quality are discussed.(3) Electro-hydraulic proportional level system simulation research. Electro-hydraulic close loop control system is built combing MSC.ADAMS with Matlab/Simulink software which makes electro-hydraulic proportional level system dynamic simulation come true.(4) By simulation model, main factors of influence working platform obliquity are gained which have some valuable advice for design. Meanwhile, the simulation result and double cylinders in series level data is compared and analyzed.(5) By researching on level system test and comparing data with simulation result, the simulation model is reasonable and making software to build simulation model is feasible, which provides scientific way for develop much more height of aerial work platform.更多还原