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摘要：固体火箭发动机工作时，药柱会受到燃气压强的冲击，从而产生轴向运动和惯性加速度。国内对药柱在过载状态下的测试大多采用硬线测试技术，使用引线直接将传输测试信号连接到外部仪器进行测试，但是外测法存在外界信号引线易断、易抖动、制作安装困难等问题。基于此，开展了针对固体推进剂轴向过载参数测量的存储测试系统的研究。在分析药柱实际工况中受到的加速度信号特点以及测试环境的特殊性等问题之后，提出了存储测试装置的设计性能指标和总体方案。根据所选各传感器的电气特性并结合系统性能指标，设计了相应的信号调理电路；设计了FPGA控制器及片外AD转换器、USB通信控制器、存储器的电路；使用Verilog硬件描述语言，在QuartusII9.0软件环境下对片外硬件电路编写了各功能控制模块；设计了合理有效的供电电路，保证了装置在试验过程中能够正常工作。研究结果表明设计的存储测试装置是可行有效的，具有实际工程使用价值。61463
毕业论文关键词：轴向过载 存储测试 FPGA 过载加速度
Abstract：When solid rocket motor is at work,the grain will be impacted by the gas pressure,producing axial movement and inertial acceleration.The tests of the grain under overload condition in the domestic mainly use hard line testing technology,the leads is connected to the external devices directly to test the transmission signal.But the lateral method exists lots of problem ,such as outside signal lead is brittle and jitter. Based on this,we promote storage test system aimed at measuring the parameters of axial overload for solid propellant.Having analysised the particularity of the grain's acceleration signal and the actual working condition characteristics and test environment ,we present the design performance and the overall scheme of storage test device.According to the electrical characteristics of each sensor selected and system performance indicators, we design the signal conditioning circuit and the FPGA controller,as well as the AD converter circuit,USB communication controller and storage.Using Verilog hardware description language,we write the function of each control module for pieces of hardware circuit in QuartusII9.0 software environment.To ensures that the device can work normally in the testing process ,we design the reasonable effective power supply circuit. Research results show that the design of the storage device is feasible and effective, having practical engineering use value.
Keywords:axial overload storage test FPGA overload acceleration
目 录
摘要 I
1 绪论 1
1.1 课题研究背景及意义 1
1.2国内外发展状况 1
1.2 1 轴向过载加速度测试方法研究 1
1.2.2 存储测试技术 2
1.3 论文内容 3
2 轴向过载存储测试装置研制总体方案 4
2.1 系统性能指标 4
2.2系统总体方案设计 5
2.3传感器选型 5
2.4 系统电路方案设计 7
2.5 本章小结 8
3 存储测试系统硬件电路设计 9
3.1传感器信号调理电路设计 9
3.1.2 加速度调理电路