飞行器弹射参数测量装置的研究与设计

发布时间：2018-06-27 14:42

本文选题：数据测量 + 模拟开关　；参考：《中北大学》2016年硕士论文

【摘要】：本文依托动态测试技术和数据采集存储理论,设计了使用于飞行器弹射试验中物理参数的测量装置。本文研究课题来源航天某院所。根据试验任务要求,测量装置应用在弹体的飞行试验中,主要测量弹体在飞行时周围的环境参数以及自身运动情况。本文设计的数据测量装置有五大组成部分:地面测试计算机、地面测试平台、弹上固态数据记录器、传感器组、电缆网,对这五部分实现的功能进行了描述。其中弹上固态数据记录器是本文设计的关键,文中进行了详细介绍。根据数据测量装置在不同时间段需要实现的任务,本文设计了三种工作模式,即自检模式、弹上采集模式、数据回读模式。本文针对弹上固态数据记录器的主要硬件电路和设计逻辑上进行了详细介绍。主要硬件电路包括电池管理模块中的DC/DC转换电路、电池充电电路、线性稳压电路和数据采集模块中的模数转换电路、存储电路;控制逻辑上,介绍了测量系统的数据采集流程、数据编帧方法和数据回读工作流程。针对典型的弹射试验参数,例如:温度、振动、噪声、冲击等信号,本文从测量方法、传感器的选用以及其工作原理,进行了介绍。针对不同的模拟信号,设计了相对应的信号调理电路。信号调理电路的设计是本文设计的重点,关系到系统的采集精度。最后对测量系统进行了试验测试,试验结果表明各种参数技术指标满足设计要求。本文设计的弹射参数测量装置已经成功应用到飞行器的弹射试验中。通过试验表明该装置的可靠性较高,测得试验数据精度高。
[Abstract]:Based on dynamic test technology and data acquisition and storage theory, a measuring device for physical parameters in ejection test of aircraft is designed in this paper. The subject of this paper comes from a spaceflight institute. According to the requirements of the test task, the measuring device is used in the flight test of the projectile, which mainly measures the environmental parameters and the motion of the projectile in flight. The data measuring device designed in this paper consists of five parts: ground test computer, ground test platform, solid state data recorder, sensor group and cable network. The functions of these five parts are described. The solid-state data recorder is the key to the design of this paper. According to the task that the data measuring device needs to realize in different time periods, this paper designs three working modes, that is, the self-checking mode, the on-board acquisition mode and the data back reading mode. In this paper, the main hardware circuit and design logic of solid state data recorder are introduced in detail. The main hardware circuits include DC / DC conversion circuit, battery charging circuit, linear voltage stabilizing circuit, A / D conversion circuit and storage circuit in the data acquisition module. Data framing method and data back reading workflow. Aiming at typical ejection test parameters, such as temperature, vibration, noise, shock and so on, this paper introduces the measurement method, the selection of sensors and its working principle. The corresponding signal conditioning circuit is designed for different analog signals. The design of signal conditioning circuit is the focus of this paper, which is related to the acquisition accuracy of the system. Finally, the measurement system is tested, and the test results show that the technical parameters meet the design requirements. The ejection parameter measuring device designed in this paper has been successfully applied to the ejection test of aircraft. The test results show that the reliability of the device is high and the precision of the test data is high.
【学位授予单位】：中北大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：V217

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