电气自动化毕业论文匹配装置自动测试台的优化研究及实现.doc

匹配装置自动测试台的优化研究及实现 匹配装置自动测试台的优化研究及实现 the optimization studies and realizes of the matching device automatic test-board【中文摘要】 在导弹研制过程中,匹配装置是遥测系统信号变换的装置,其功能是把转换后的弹上信息送到遥测设备,其精度要求高。匹配装置自动测试台是检测匹配装置性能的检测工具,其重要的技术指标是精度与可靠性,其高精度是作为检测匹配装置的前提,可靠性是决定了检测结果的可靠度。本课题针对现有的技术水平,分析了影响大型检测系统测量精度的主要因素,提出了提高精度的具体方案和办法:1)采用了多路独立交流转直流模块,数字部分与模拟部分分开供电,减小了数字信号与模拟信号之间的串扰。2)利用单片机集成的16位高精度a/d构建了反馈自检模块,通过该模块建立了一个闭环控制系统,有效地改善了系统的整体精度。该方法将单片机技术、fpga技术进行了有机的结合,使其充分发挥了各自的优点。3)应用usb单片机控制继电器有效地降低了系统工作温度,提高了测试台的可靠性。4)本文通过工艺、结构设计、软件设计、高精密电阻、标定方法和回采参数自动校准的设计改进,进一步提高了本系统的可靠性与精度。本文通过上述方法有效提高了测试台的精度与可靠性,并使本测试台成功应用于某型号匹配装置的检测,达到了任务书的技术指标。【英文摘要】 in the development of the missile, matching equipment is the the equipment of the telemetry system signal transform, its function is sending the conversion bomb information to the telemetry equipment and its precision requests highly. the matching device automatic test-board is the checking tool checked the matching device capability, precision and reliability are the technique of the the matching device, the precision is the precondition of checking the matching device, the reliability is credibility degree of the decision checking consequent.the topic in view of the existing technique level, the main factors, which influence the measurement precision of the large scale test system, are analyzed in this paper, and the solutions improving the precision are put forward.1) using the multi-channel independent ac to transfer dc module, the power supply of the digit part and the simulation part is discerption, reducing the crosstalk between the digital signal and the simulated signal;2)the feedback self-checking module is constructed by singlechip compositive 16 high accuracy a/d , established a closed-loop control system through this module and improved systems overall precision effectively. this method combines the single technology and fpga technology is carried on the organic union, enable it to display the respective merit fully.3)the system working temperature is effectively reduced by using usb singlechip to control the relay, enhancing test-boards reliability.4)this paper uses the craft、the structural design、the software design、the high precision resistor、the demarcation method and the stopping parameter automatic calibrations design improvement to further enhance the systems reliability and the precision.the article increases test-boards precision and reliability effectively through the above method, and uses this test-board to apply in some model matching device examination successfully, achieving the project description technical specification.【中文关键词】 自动测试台; 标定; 可靠性; 高精度 【英文关键词】 automated test-board; demarcation; reliability; high accuracy 【毕业论文目录】毕业论文论文摘要 4-5 abstract 5-6 第一章 绪论 9-14 1.1 课题背景、研究目的及意义 9-10 1.2 测试台精度分析 10 1.3 测试台可靠性分析 10-12 1.3.1 需求分析 11 1.3.2 技术发展 11 1.3.3 提高方案 11-12 1.4 本课题的研究关键技术及章节安排 12-14 1.4.1 关键技术 12-13 1.4.2 本课题的章节安排 13-14 第二章 测试台方案设计 14-23 2.1 测试台概述及指标 14-15 2.2 测试台工作过程分析 15-16 2.3 测试台方案设计 16-22 2.3.1 主控卡模块 17-18 2.3.2 开关量模块 18 2.3.3 采集卡模块 18-19 2.3.4 信号源模块 19-21 2.3.5 电源模块 21-22 2.4 本章小节 22-23 第三章 关键电路设计 23-36 3.1 电源模块 23-27 3.1.1 原理分析 23-25 3.1.2 实际应用 25-27 3.2 220v交流电通断控制 27-31 3.2.1 总体原理设计 28-29 3.2.2 继电器的选用 29-30 3.2.3 硬件电路设计 30-31 3.3 数模转换与模数转换电路 31-35 3.3.1 数模转换电路 31-33 3.3.2 模数转换电路 33-35 3.4 本章小节 35-36 第四章 精度与可靠性的优化 36-59 4.1 电路焊接工艺及布板 36-38 4.2 结构设计 38-40 4.2.1 外型结构设计 38-39 4.2.2 电源板与电路板连接 39-40 4.3 软件优化 40-42 4.3.1 vb程序优化 40-42 4.3.2 信号源程序改进 42 4.4 高精密电阻 42-45 4.5 闭环控制系统 45-47 4.6 系统标定 47-57 4.6.1 标定原