【作者】 赵翔；

【导师】 姚进；

【作者基本信息】 四川大学 ， 机械设计及理论， 2003， 硕士

【摘要】 针对EPS加速器辐照系统自动化的要求，本文研制开发了一套自动化监控系统。其主要工作和成果如下：本文在充分调研EPS加速器辐照系统工艺生产流程基础上，提出了基于PLC+工业计算机的两级集散式EPS加速器自动化与监控的方案，从而最大限度地保证了生产的正常进行。整个系统由检测、过程控制、上位机软件三个子系统部分组成，论文提出了各子系统的功能和实施方案。在检测子系统方案设计中，充分考虑到现场生产环境比较恶劣，如粉尘多，电磁干扰强，噪音大等因素，在软件和硬件方面都采取了积极措施。在硬件方面，选用抗干扰能力强的光电隔离电量传感器，并采取RC滤波抗干扰措施解决中高频干扰问题；在软件方面，对采集到的信号量采取递推平均值算法，解决低频交流和尖峰脉冲干扰问题。在过程控制子系统方案设计中，以识别小车的车号和位置为基四川大学硕士论文础，重点解决了速度实时跟踪束流，速度的精度，消除距离累计计算误差这三个技术难点。通过建立速度跟踪束流的数学模型，较好地解决了速度跟踪束流的实时性问题;通过采取用电流模拟量控制变频器和分段线性处理的办法，成功地解决了速度精度问题(误差在士1%内);通过检测接近开关触发的脉冲数，适时校核所有小车位置，消除各车之间距离计算误差，从而很好地解决了距离累计计算误差。 在上位机软件方案设计中，以实现人机交互功能和数据传输为核心，完成系统界面设计，数据管理，上下位机通讯功能的设计。通过采用功能模块设计的方法，完成系统界面设计;运用网络功能，将现场的有用数据上传到信息中心的主计算机，以便产品质量的追溯管理，同时通过信息中心的主计算机也可以实时掌握生产现场的情况，实现辐照小车运行的动态监视，从而实现生产的自动化管理;通过检测PLC的应答信息，解决工控机与PLC之间通信的数据效验和故障报警难点;通过采取加标志位的办法，实现数据收发的准确转换。 目前，该系统己成功地应用于四川久远科技股份有限公司辐照中心，实现了生产的自动化，提高了劳动生产率和产品质量，取得了明显的经济效益，具有较高的推广价值更多还原

【Abstract】 Aimed at automation of the EPS accelerator radiant system, a set of monitoring and controlling system is developed in this paper. The main work and achievement are as follows:Based on the adequately investigation on the process of EPS accelerator radiant system, we put forward a distribution control system for EPS accelerator based on PLC+ IC. The whole system consists of three sub-systems, measuring, procedure-controlling and up-computer software. This paper puts forward the function and implementation project for each sub-system.In measuring system design, fully considering that the manufacturing environment is worse such as much powder dust, powerful electromagnetism disturbance, strong noise and etc., we take many active measures. In hardware, we choose anti-disturbance photoelectric isolative sensor, take RC filter to resolve high-frequency for anti-disturbance. In software, we adopt arithmetic ofrecursion mean value to collective signal values to resolve low-frequency AC and pinnacle pulse disturbance.In procedure-controlling design, based on identifying the number and position of the vehicles, we settle three technical problems such as real-time tracking beam current by velocity, precision of velocity and eliminating cumulate error from distance calculation. With the mathematic model of tracking beam current by velocity, real-time tracking can be obtained; with current simulation controlling transducer and subsection linearity, precision of velocity(error in ?1%) is triumphantly can be controlled; with inspection of the pulse numbers of switches, the position of all vehicles are checked to eliminate the error of calculating distance between all ones.In up-computer software design, aimed at realizing human-computer interface and data communication, the functions such as system interface design, data management, up-down computer communication are designed. With function module design method, the system interface design is completed; by application of network function, the data is communicated to main-computer in order to retroactively supervisor product quality and to monitor local manufacture. Through inspection of response of PLC, the problems of dada efficacy and malfunction alarm in ICC-PLC communication are solved; with adding symbol-bit, the exact conversion of receiving and sending data is realized.Now, this system has been successfully applied in radiant center of Sichuan Jiuyuan scientific and technical Co.Ltd, which makesproduction be automatic, and improves productivity and product quality.更多还原