冲击波压力测量系统准静态校准方法研究
时间:2018-07-07 19:15 来源:毕业论文 作者:毕业论文 点击:次
| 摘要实际工况下进行冲击波压力测试时，为消除传感器系统受到的各种干扰（如温度，冲击振动），需对传感器采取必要的干扰抑制措施。采取这些抑制措施后，传感器的灵敏度及其动态特性将会发生变化，因而必须对采取抑制措施后的传感器系统进行校准。由于压电式冲击波压力测量系统低频尤其是零频特性不理想，无法用静态标定的方法获取系统的低频工作特性参数。因此，本文开展了压电式冲击波压力测量系统的准静态校准方法的研究。25380 采用“比对式”方法进行冲击波压力测量系统准静态校准。基于现有准静态校准装置，组建了标准压力监测系统及典型冲击波压力测量系统，并探讨了准静态校准的量传体系。对标准压力监测系统进行了静态标定，获取了系统的工作特性参数。在组建的准静态校准装置上开展了准静态校准试验方法的研究，获得了标准压力监测系统和典型冲击波压力测量系统的试验数据。根据校准数据，探讨了基于准静态校准的冲击波压力测量系统的灵敏度、线性度、重复性的求取方法。针对脉宽为3ms的压力脉冲，对被校冲击波压力测量系统低频段的传递特性开展研究。 关键词 冲击波压力测量，“比对式”准静态校准，落锤液压校准装置，工作特性参数，低频传递特性 毕业论文设计说明书外文摘要 Title A Study on the Quasi-static Calibration Method of Shock Wave Pressure Measurement System Abstract When the shock wave pressure is tested under the actual working condition, to eliminate the interferences(such as temperature,shock vibration) of the sensor system，the necessary interference suppression measures are required for the sensor. After taking these disincentives，sensitivity and dynamic characteristics of the sensor will change,thus the sensor system must be calibrated after the suppression measures.Dissatisfied of low-frequency characteristics especially in the zero-frequency of the piezoelectric shock wave pressure measurement system，system parameters can not be got by static calibration. Therefore Quasi-static calibration method of the piezoelectric shock wave pressure measurement is studied. The quasi-static calibration of the shock wave pressure measurement system is carried out in the‘contradistinction’method .Based on existing quasi-static calibration device,the standard pressure monitoring system and the typical shock wave pressure measurement system based are established and the value dissemination of quasi-static calibration is explored.The static calibration of the standard pressure monitoring system is carried out to acquire the operating characteristic parameters of the system.The research of the quasi-static calibration test method is carried out and the test data is obtained of standard pressure monitoring system and the typical shock wave pressure measurement system.According to the calibration data, the sensitivity, linearity and repeatability of the shock wave pressure measurement system based on quasi-static calibration are discussed.Aiming at the pressure pulse in which the pulse width is 3ms,the transmission characteristics of the low frequency section of the shock wave pressure measurement system is studied. Keywords measurement of shock wave pressure，‘contradistinction’method quasi-static calibration,hammer hydraulic calibration device,work parameters, low frequency transfer characteristic 目 次 1 绪论 1 1.1 选题的背景和意义 1 1.2 国内外研究现状 2 1.3 本文的研究内容和章节安排 3 2 基于落锤式的准静态校准系统的组建 5 2.1基于落锤式的准静态校准系统的组成 5 (责任编辑：qin) |