盾构推进机构电液控制系统的研究

【作者】 房猛；

【导师】 魏建华；

【作者基本信息】 浙江大学 ， 机械电子控制工程， 2003， 硕士

【摘要】 隧道掘进技术又称“盾构技术”，是随着城市密集化、交通、上下水道、电气控制以及通讯设施的发达而发展起来的先进施工技术，伴随我国城市建设的大力发展，已成为国内工程界的研究热点。本论文在对盾构技术充分调研的基础上，通过阅读、分析及综合大量文献，对盾构机推进系统的电液控制系统进行了设计研究。通过对推进系统采用分组控制的原则，利用电液比例控制技术控制推进液压缸的速度及压力，来完成盾构推进过程中的地表沉降控制以及盾构机掘进姿态的调整，并在此基础上对其控制策略进行了研究、仿真，实验证明其有良好的控制效果。 此外，详细介绍了上位机监控软件的研制过程，采用Wincc作为主要开发工具，结合用户的实际需要，开发了操作方便，运行稳定，控制效果良好及易维护的监控软件。在开发过程中，严格按组态的思想进行开发，保证了代码的质量。最后介绍了实际开发过程中遇到的一些难点及采用的解决方法。论文主要内容如下： 第一章为绪论，综合论述了盾构机的发展历程、技术现状及其发展趋势，阐明发展盾构技术的意义。在此基础上提出盾构推进系统电液控制系统的总体设计思想，介绍了本文的主要研究方向和内容。 第二章介绍了本课题的总体设计方案，并针对掘进过程中地表沉降量的控制要求，分析盾构施工土压平衡的控制原理，建立了推进速度控制系统的数学模型，根据建立的模型使用仿真工具MATLAB对系统进行静、动态分析，结果表明系统的速度控制存在抖动现象。因此，在对比例调速阀控制特性研究的基础上，探讨了状态转移算法对改善系统速度控制性能的功效。 第三章分析了盾构机推进系统的姿态调整原理，在理论分析的基础上，建立系统压力控制环节的数学模型，并依此分析了PID控制算法对系统压力控制性能的改善及环境变化因素对系统综合性能的影响。此外，通过仿真与实验，分析验证了在盾构推进系统中应用平衡阀对系统压力及速度控制性能的改善作用。 第四章对上位机监控系统做了概述，介绍了软件结构，对开发过程中遇到的问题及难点做了全面讨论。 第五章是总结与展望，对全文所做的研究工作进行了简要总结并对今后的工作进行了展望。更多还原

【Abstract】 Tunnel Boring Machine (TBM) Technology, also named ’Shield Technology’,is an advanced construction technology with the development of city densification, traffic, aqueduct, electric control and communication equipment, and has become the research focus of engineering field in China with the rapid development of city construction. Based on the investigation and research result by reading, analysing and summarizing lots of literatures,this paper discusses the electro-hydraulic control system of shield machine’s push system. According to the principle of separate control the ground deformation during construction and the shield machine’s stance can be controlled by controlling the speed and pressure of the push cylinders in use of the Electro-hydraulic proportional control technology. Also the control strategy is studied and proved by modeling, simulation and experiments.Furthermore, in this paper the development process of the monitor software in the upper workstation is described. Keeping to the concept of configuration, a monitor software is developed according to the customers’ practical needs and a good code quality is guaranteed. The software has many merits such as convenient operation, good stability, excellent maintainability and very good performance. At last, the difficulties is dicussed and their resolvents are given. Here are the main contents of this paper:Chapter 1,a survey of shield machine’s history, current technical status, development trend, and its development meaning for China. At last,the detailed contents of this research project are presented.Chapter 2,first,introduce the overall design scheme of the project. According to the control standard of ground deformation during boring, analyse the theory for earth pressure balance control. Then build up the mathematic model of the push speed control system, analyze its static and dynamic response with the tool of MATLAB. Based on the study of the control characteristic of proportional velocity regulating valve, analyse the improvement effect for system’s speed control performance by use of the conditional jump control arithmetic.Chapter 3,first,analyse the stance adjustment theory for shield machine’s push system, then build up the mathematic model of the pressure control system. Discuss the improvement effect for system’s pressure control performance by use of PID control arithmetic and the influence of environmental factors on system’s integrated performance. In addition by simulation and experiment analyse and prove the improvement effect for system’s pressure and speed control performance by use of the balance valve in push system of shield machine.Chapter 4, summarize the monitor system of upper workstation, introduce the software structure and discuss the problems during development in detail.Chapter 5, give a brief summarization on this paper and an expectation on the future work.更多还原