电传动和液压传动平地机作业性能分析

发布时间：2018-05-25 03:44

本文选题：电传动 + 液压传动　；参考：《长安大学》2015年硕士论文

【摘要】：当前世界能源消耗过度,浪费现象普遍存在,环境污染原来越严重,传统的液力机械平地机已不能满足当前社会的要求,平地机必须进行技术革新。本文对电传动和液压传动平地机的作业性能进行对比研究,目的是确定一种更适合平地机的传动技术,在满足平地机动力性要求的前提下减少排放。本文从平地机的动力学及负荷特性分析入手,在对电传动和液压传动平地机合理匹配的基础上进行了作业性能仿真分析。主要内容有:首先,对平地机进行了运动学、动力学分析,对负荷特性进行了研究并采用简谐周期函数对随机负荷进行了模拟;其次,对电传动平地机进行了传动方案研究及电传动系统的匹配研究,并对发电机、电动机、超级电容进行了选型及计算;再次,在对发动机—液压系统进行合理匹配控制研究的基础上,对液压传动平地机的液压泵、液压马达进行了选型与计算,对系统压力进行了确定,给出了液压泵、液压马达排量的动态调节方法与实现算法;最后,利用AMESim软件对电传动平地机和液压传动平地机分别进行建模并完成了不同工况下的作业性能仿真及结果分析,仿真结果对提高当前平地机技术水平具有指导意义,且本文利用AMESim进行电传动系统仿真的创新方法对其他机械的电传动系统仿真研究具有一定的借鉴意义。
[Abstract]:At present, the energy consumption in the world is excessive and the phenomenon of waste is widespread. The more serious the environmental pollution is, the more serious the environmental pollution is. The traditional hydraulic mechanical grader can no longer meet the requirements of the current society, so the leveling machine must carry on the technical innovation. In this paper, the working performance of electric drive and hydraulic drive grader is compared and studied. The purpose of this paper is to determine a transmission technology that is more suitable for the grader and to reduce the emission under the premise of satisfying the dynamic requirements of the grader. In this paper, the dynamic and load characteristics of the grader are analyzed, and the operation performance simulation analysis is carried out on the basis of the reasonable matching of electric drive and hydraulic drive grader. The main contents are as follows: firstly, the kinematics and dynamics of the grader are analyzed, the load characteristics are studied and the random load is simulated by the harmonic periodic function. The transmission scheme of electric drive grader and the matching of electric transmission system are studied, and the type selection and calculation of generator, motor and super capacitor are carried out. On the basis of reasonable matching control of engine and hydraulic system, the hydraulic pump and hydraulic motor of hydraulic drive grader are selected and calculated, the pressure of the system is determined, and the hydraulic pump is given. The dynamic adjustment method and realization algorithm of hydraulic motor displacement are presented. Finally, the electric drive grader and hydraulic drive grader are modeled by AMESim software, and the operation performance simulation and result analysis are completed under different working conditions. The simulation results are of guiding significance to improve the current level of leveling machine technology, and the innovative method of electric transmission system simulation using AMESim in this paper has some reference significance for the simulation research of other mechanical electric transmission system.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU623.6

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