桥塔检测机系统动力学稳定性能仿真与研究

发布时间：2018-06-29 13:10

本文选题：桥塔检测机 + 虚拟样机　；参考：《重庆交通大学》2014年硕士论文

【摘要】：随着我国交通事业的快速发展，中国桥梁建设正在突飞猛进。交通量的增长对桥梁通行能力和承载能力要求越来越高，大量桥梁的陈旧老化对现役桥梁的安全运行也构成了巨大的压力。因此，开发先进、有效的检测设备，加强现役桥梁的病害诊断及检测维护，已成为交通安全研究的重要研究方向。桥塔检测机是导师率领的研究团队针对悬索桥桥塔结构专门开发的检测设备，结构复杂，其机构运行稳定直接影响到该桥梁检测设备的检测精度和位置准确性。本论文运用虚拟样机技术，，通过ADAMS和Simulink联合仿真对桥塔检测机的动力学稳定性进行了深入研究。主要研究内容如下： ①在分析了桥塔检测机的机构构成以及运行机理的基础上，利用三维设计软件UG建立桥塔检测机虚拟样机的三维实体模型，研究了UG与ADAMS之间模型的传递方法后，然后采用了最可靠的ParaSolid格式将模型导入动力学分析软件ADAMS中。 ②深入讨论了钢丝绳的建模方法，并选择了ADAMS宏命令成功实现了桥塔检测机钢丝绳系统模型的建立，着重阐述了钢丝绳的建模流程，包括小圆柱离散、轴套力的添加、钢丝绳的缠绕以及接触力的添加，并附上详细的宏命令。 ③根据检测机的轮胎特点及桥塔侧面墙体的等效路面等级，利用ADAMS提供的轮胎、路面属性文件建立轮胎路面耦合模型，并按照物理样机的运动关系在ADAMS软件中对各个构件添加驱动、约束和力。 ④研究了三相异步电机的工作原理，分析了其数学模型，建立了基于三相异步电机的Simulink控制模型，并结合ADAMS机械系统模型搭建了机电一体化联合仿真模型，成功实现了桥塔检测机的动态仿真。 ⑤参照垂直升降电梯的稳定性评价方法，对桥塔检测机的运行稳定性进行分析评价，首先对检测机的振动特性进行了分析，并优化了影响其运行稳定性的相关参数，然后提出了检测机姿态稳定性的概念，并对其姿态稳定性进行了仿真分析，最后分析了钢丝绳性能对系统的影响，结果证明检测机的运行稳定性能够达到标准，能够保证检测机顺利、稳定的进行检测作业。
[Abstract]:With the rapid development of China's transportation industry, the construction of bridges in China is advancing by leaps and bounds. The increase of traffic volume demands more and more high bridge capacity and bearing capacity. The aging of a large number of bridges also poses a great pressure on the safe operation of existing bridges. Therefore, it has become an important research direction of traffic safety research to develop advanced and effective detection equipment and strengthen the disease diagnosis and detection and maintenance of existing bridges. The bridge tower tester is a special testing equipment for suspension bridge tower structure, which is specially developed by the research team led by the tutor. The structure is complex, and its mechanism operation stability directly affects the detection accuracy and location accuracy of the bridge detection equipment. In this paper, the dynamic stability of the bridge tower tester is studied by Adams and Simulink simulation using virtual prototyping technology. The main research contents are as follows: 1 based on the analysis of the structure and operation mechanism of the bridge tower tester, the three-dimensional solid model of the virtual prototype of the bridge tower detector is established by using the three-dimensional design software UG. After studying the transfer method of the model between UG and Adams, the most reliable Para solid format is used to import the model into the dynamic analysis software Adams. 2 the modeling method of wire rope is discussed in depth. The model of wire rope system of bridge tower tester is established successfully by selecting Adams macro command. The modeling process of wire rope is described emphatically, including small cylinder discrete, shaft sleeve force added, wire rope winding and contact force added. A detailed macro command is attached. 3 according to the tire characteristics of the tester and the equivalent pavement grade of the side wall of the bridge tower, a tire pavement coupling model is established by using the tire and pavement attribute file provided by Adams. According to the motion relation of the physical prototype, the driving, constraint and force of each component are added into Adams software. 4 the working principle of the three-phase asynchronous motor is studied, and its mathematical model is analyzed. Simulink control model based on three-phase induction motor is established, and combined with Adams mechanical system model, the combined simulation model of electromechanical integration is built. The dynamic simulation of the bridge tower tester is successfully realized. 5 the stability of the bridge tower tester is analyzed and evaluated by referring to the stability evaluation method of the vertical elevator. Firstly, the vibration characteristics of the bridge tower detector are analyzed. Then the concept of attitude stability of the tester is put forward, and its attitude stability is simulated and analyzed. Finally, the influence of the performance of wire rope on the system is analyzed. The results show that the operation stability of the tester can reach the standard and ensure the testing machine smoothly and stably.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U446

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