桥梁预应力智能张拉控制系统研究

发布时间：2018-05-03 22:42

本文选题：预应力张拉 + 智能控制　；参考：《长安大学》2017年硕士论文

【摘要】：预应力张拉在预应力梁的生产过程中起到至关重要的作用。本文针对传统预应力张拉技术存在的张拉控制精度不高、张拉同步性误差较大、人工因素不可控等众多问题,应用自动控制技术、传感器技术和无线通信技术设计了一套桥梁预应力智能张拉控制系统。该系统能够实时采集监测张拉力和钢绞线伸长量,自动精确控制张拉作业以及张拉过程的同步性。本文首先在对预应力张拉施工技术规范、质量控制要求及系统功能需求研究分析的基础上,设计了桥梁预应力智能张拉控制系统的总体方案,主要包括智能张拉从控控制系统和智能张拉主控控制系统两部分。接着,对智能张拉从控控制系统和智能张拉主控控制系统分别进行了硬件设计。智能张拉从控控制系统主要包括单片机最小系统、电源模块、数据采集模块、执行模块、显示模块以及主从控制系统无线通信模块。智能张拉主控控制系统主要包括单片机最小系统、电源模块、存储模块、USB接口模块、显示模块、报警模块以及主从控制系统无线通信模块。最后,应用AMESim仿真软件根据系统工作原理图从张拉负载环节、变频器电机环节和液压系统环节三个环节建立AMESim仿真模型,并进行开环控制和PID控制仿真实验。根据仿真结果分析可以得出,PID控制算法能够有效地提高预应力张拉控制精度。本文的研究成果在预应力张拉施工中可以有效克服传统张拉技术的缺点,提高张拉过程的施工质量,为今后在预应力张拉的进一步研究提供参考依据。
[Abstract]:Prestress tensioning plays an important role in the production of prestressed beams. In this paper, the automatic control technology is applied to solve the problems existing in the traditional prestressing tensioning technology, such as low tension control precision, large tension synchronization error, uncontrollable artificial factors, and so on. Sensor technology and wireless communication technology design a set of bridge prestressing intelligent tension control system. The system can collect and monitor tension force and wire elongation in real time, and automatically and accurately control the synchronism of tension operation and tensioning process. Based on the research and analysis of the technical specifications, quality control requirements and system function requirements of prestressed tensioning construction, the overall scheme of intelligent tension control system for bridge prestressing is designed in this paper. It mainly includes two parts: intelligent tension slave control system and intelligent tension master control system. Then, the hardware design of the intelligent tension slave control system and the intelligent tension master control system are carried out. The intelligent tension slave control system mainly includes the MCU minimum system, the power supply module, the data acquisition module, the execution module, the display module and the master-slave control system wireless communication module. The intelligent tensioning master control system mainly includes single chip microcomputer minimum system, power supply module, storage module and USB interface module, display module, alarm module and master-slave control system wireless communication module. Finally, according to the working principle diagram of the system, the AMESim simulation software is used to establish the AMESim simulation model from the three links of stretching the load link, the inverter motor link and the hydraulic system link, and carries on the open loop control and the PID control simulation experiment. According to the analysis of simulation results, it can be concluded that pid control algorithm can effectively improve the precision of prestressing tension control. The research results of this paper can effectively overcome the shortcomings of the traditional tensioning technology and improve the construction quality of the tensioning process in the prestress tensioning construction, and provide a reference basis for the further study of the prestressing tensioning in the future.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U445.57;TP273

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