盾构机液压推进系统的故障仿真研究

发布时间：2018-04-01 10:10

本文选题：盾构机　切入点：液压推进系统　出处：《华北水利水电大学》2017年硕士论文

【摘要】：盾构机的液压推进系统承担着盾构机的顶进任务,能够实现盾构机的纠偏、转弯、姿态控制等功能。若推进系统出现故障,则会引发地表的沉降或者隆起,甚至造成停工。此次研究是利用AMESim液压仿真软件对盾构机的液压推进系统进行建模和仿真,研究故障产生的特点与机理,并借助于盾构电液控制系统综合试验平台对仿真结果进行验证。具体包括以下方面的工作:(1)掌握液压系统产生故障的机理和建模方法,并详细地分析了在AMESim仿真软件的平台上如何实现盾构机液压推进系统的重要元器件——比例调速阀、比例溢流阀及液压缸的建模和故障仿真研究。实际的液压系统具有复杂性、封闭性、非线性的特点。在研究盾构机的液压推进系统的模型时需要大量的参数,而且所建立的模块之间是非线性的关系。这是运用仿真方法研究盾构机液压推进系统的局限所在——降低了基于数学模型的液压系统故障仿真研究的精确性。(2)在AMESim仿真平台上建立盾构机液压推进系统的模型。重点研究了盾构机液压推进系统中比例调速阀、比例溢流阀及液压缸在发生故障时对系统性能的影响。因为导致这些故障的参数之间是相互耦合的,在研究时重点要理清参数之间的数量关系。(3)介绍了盾构电液控制系统综合试验平台和数据采集系统,采用故障注入技术进行了液压系统的主要元件(比例调速阀、比例溢流阀及液压缸)的故障研究,得到的试验结果与仿真结果进行对比分析。
[Abstract]:The hydraulic propulsion system of the shield machine is responsible for the advance task of the shield machine, and can achieve the functions of correcting deviation, turning and attitude control of the shield machine. If the propulsion system fails, it will lead to the subsidence or uplift of the earth's surface. The research is to use AMESim hydraulic simulation software to model and simulate the hydraulic propulsion system of shield machine, and study the characteristics and mechanism of the fault. The simulation results are verified by the integrated test platform of shield electrohydraulic control system, including the following work: 1) mastering the mechanism of hydraulic system failure and modeling method. And how to realize the modeling and fault simulation of proportional speed regulating valve, proportional relief valve and hydraulic cylinder on the platform of AMESim simulation software is analyzed in detail. The characteristics of closure and nonlinearity. A lot of parameters are needed to study the model of hydraulic propulsion system of shield machine. This is the limitation of using simulation method to study the hydraulic propulsion system of shield machine, which reduces the accuracy of fault simulation of hydraulic system based on mathematical model in AMESim. The model of hydraulic propulsion system of shield machine is established on the simulation platform. The proportional speed regulating valve in hydraulic propulsion system of shield machine is studied emphatically. The effect of the proportional relief valve and the hydraulic cylinder on system performance in the event of failure, because the parameters leading to these failures are coupled with each other, In this paper, the comprehensive test platform and data acquisition system of shield electrohydraulic control system are introduced. The main components of hydraulic system (proportional speed regulating valve) are carried out by fault injection technology. The fault of proportional relief valve and hydraulic cylinder is studied, and the test results are compared with the simulation results.
【学位授予单位】：华北水利水电大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U455.39

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