TLC450运梁车液压系统设计及行走液压系统仿真分析

发布时间：2018-01-13 04:08

本文关键词：TLC450运梁车液压系统设计及行走液压系统仿真分析　出处：《燕山大学》2012年硕士论文　论文类型：学位论文

【摘要】：随着我国经济的持续快速发展，铁路运力不足的矛盾也越来越突出，建设铁路客运专线，实现铁路客运与货运分离已经刻不容缓。受铁路客运专线施工工艺的限制，从预制梁场到架桥现场之间对混凝土箱梁的运输必须使用轮胎式特种车辆，运梁车正是为了满足这种需求而研制的。本课题研究的目的主要是针对运梁车在实际运行中的速度控制不精确的问题进行理论分析及仿真分析，进而完成对运梁车行走系统的优化设计。基于以上目的，首先，本课题结合运梁车的使用工况以及施工特点，以整车的稳定性与可靠性为目的，介绍了运梁车的整体结构布局；以运梁车要实现的功能为出发点，，主要分析了行走系统动力学特性，计算了不同工况下行走系统的阻力和功率消耗，设计计算了行走液压驱动系统、液压转向系统、液压冷却系统以及其它辅助液压系统，并着重对行走液压驱动系统关键元件的设计选型及工作原理进行了论述。其次，本课题着重对液压行走驱动系统的速度控制模式进行了研究，在理论分析的基础上确定了液压行走系统的调速方案；在对行走系统模型进行理论分析的基础上利用AMESim软件建立了重型轮胎式运梁车液压行走系统的仿真模型，并对驱动行走液压系统的调速方案进行仿真验证；按照转速感应控制方式建立相关的功率匹配仿真模型，仿真结果显示该控制方式可以较好的完成运梁车调速过程的功率匹配问题，有效的增加了运梁车的节能效果。最后，针对调速过程中的速度控制不精确问题，建立基于马达转速控制的闭环控制系统，使用MATLAB软件设计了常规PID和模糊PID控制器，并利用AMESim与MATLAB软件对液压行走系统进行联合仿真，仿真结果表明常规PID控制虽然可以针对具体的系统参数完成马达转速的控制，但是在不同转速控制目标下的响应却不很理想，而模糊自整定PID控制可以完成不同控制目标下的PID参数的在线整定，可以较好对不同的控制目标对PID参数进行在线匹配，仿真结果表明模糊自整定PID的控制效果优于常规PID控制。
[Abstract]:With the sustained and rapid development of China's economy, the contradiction of insufficient railway capacity is becoming more and more prominent. It is urgent to realize the separation of railway passenger transport and freight transport. Due to the limitation of construction technology of railway passenger dedicated line, the special vehicle of tire type must be used in the transportation of concrete box girder from precast girder yard to bridge construction site. It is precisely to meet this kind of demand that the beam conveyer is developed. The purpose of this paper is to analyze and simulate the imprecise speed control of beam carrying vehicle in actual operation. Based on the above purpose, first of all, combined with the use conditions and construction characteristics of the vehicle, the purpose of this paper is to achieve the stability and reliability of the whole vehicle. This paper introduces the overall structure layout of beam conveyer. Based on the function of beam moving vehicle, the dynamic characteristics of walking system are analyzed, the resistance and power consumption of walking system under different working conditions are calculated, and the hydraulic driving system of walking is designed and calculated. Hydraulic steering system, hydraulic cooling system and other auxiliary hydraulic systems are discussed. The design and selection of key components and working principle of walking hydraulic drive system are discussed. Secondly, the speed control mode of the hydraulic driving system is studied, and the speed control scheme of the hydraulic driving system is determined on the basis of theoretical analysis. Based on the theoretical analysis of the walking system model, the simulation model of the hydraulic walking system of the heavy-duty tire beam carrier is established by using AMESim software. The speed regulation scheme of driving hydraulic system is verified by simulation. According to the speed induction control mode, the power matching simulation model is established. The simulation results show that the control method can achieve the power matching problem of the speed control process. It effectively increases the energy saving effect of the beam transport vehicle. Finally, a closed-loop control system based on motor speed control is established for the inaccuracy of speed control in the course of speed regulation. Conventional PID and fuzzy PID controller are designed by using MATLAB software. AMESim and MATLAB software are used to simulate the hydraulic walking system. The simulation results show that the conventional PID control can complete the motor speed control according to the specific system parameters. However, the response under different rotational speed control targets is not ideal, and fuzzy self-tuning PID control can achieve on-line tuning of PID parameters under different control objectives. The PID parameters can be matched on line with different control targets. The simulation results show that the control effect of fuzzy self-tuning PID is better than that of conventional PID control.
【学位授予单位】：燕山大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH137.7;U215.6

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