某电动自行式剪型高空作业平台仿真研究

发布时间：2018-04-25 19:41

本文选题：高空作业平台 + 建模仿真　；参考：《南京理工大学》2012年硕士论文

【摘要】：自行式剪型高空作业平台是一种被广泛应用的高空作业工程车辆,其主要作用是将作业人员以及作业工具或者一定重量的货物通过剪叉平台机构升到一定高度的高空进行工程作业。采用变频液压调速技术的新型电动自行式剪型高空作业平台由于具有清洁环保、节能效果好、控制方便、安静无噪音、可靠性高等诸多优点成为新的发展方向。本论文依托某企业的新型电动自行式剪型高空作业平台的自主开发项目,基于计算机仿真和虚拟样机技术对所研究的电动自行式剪型高空作业平台的机电液系统进行了建模和仿真研究,论文主要研究内容如下：首先,论文对变频液压调速技术的核心技术,即异步电机矢量控制进行了理论分析和数学建模,以此为基础构建了一种异步电机转差频率矢量控制调速系统,并基于计算机仿真技术应用Simulink仿真软件和SimPowerSystems仿真工具箱对所构建的调速系统进行了建模和仿真试验。其次,论文以某新型电动自行式剪型高空作业平台的剪叉平台机构为研究对象,应用SimMechanics仿真工具箱建立了其机械动力学仿真模型,并通过仿真计算得到了平台在起升过程中任意时刻的位移、速度和加速度以及举升油缸的受力曲线。最后,对液压系统进行适当简化后应用SimHydraulics仿真工具箱建立了液压系统仿真模型并进行了仿真计算和分析,实现了升降系统机电液多领域额物理系统联合建模和仿真。研究结果为新型电动自行式高空作业平台的开发设计提供了理论基础和虚拟样机设计方法。
[Abstract]:Self-propelled shearing platform is a widely used aerial engineering vehicle. Its main function is to carry out engineering work by elevating operators and tools or goods of a certain weight to a certain height by means of the shear platform mechanism. A new type of electric self-propelled shearing high altitude platform with variable frequency hydraulic speed regulation technology has become a new developing direction because of its advantages of clean and environmental protection, good energy saving effect, convenient control, quiet and no noise, high reliability and so on. This paper relies on the independent development project of a new type of electric self-propelled shearing platform in a certain enterprise. Based on the computer simulation and virtual prototyping technology, the electromechanical hydraulic system of the electric self-propelled high altitude platform is modeled and simulated. The main contents of this paper are as follows: Firstly, the paper analyzes the key technology of variable frequency hydraulic speed regulation technology, I. E. vector control of asynchronous motor, and builds a frequency vector control system of frequency vector control of asynchronous motor. Based on the computer simulation technology, the modeling and simulation experiments of the speed regulating system are carried out by using the Simulink simulation software and the SimPowerSystems simulation toolbox. Secondly, the mechanical dynamics simulation model of a new type of electric self-propelled high altitude platform is established by using SimMechanics simulation toolbox, taking the shear fork platform mechanism of a new type of electric self-propelled high altitude working platform as the research object. The displacement, velocity and acceleration of the platform at any time during the hoisting process and the stress curve of the lifting cylinder are obtained by simulation. Finally, the hydraulic system simulation model is established by using the SimHydraulics simulation toolbox after the proper simplification of the hydraulic system. The simulation calculation and analysis are carried out, and the joint modeling and simulation of the electro-hydraulic multi-domain forehead physical system of the lifting system are realized. The results provide a theoretical basis and a virtual prototype design method for the development and design of a new type of electric self-propelled aerial platform.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH211.6

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