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本文从应用角度出发,对压差作用下在单元体内产生的内力逐一作了考虑,尤其环箍力的计算采取一种近似形式,得到较好结果。针对两种不同情况,建立了考虑气体密度的圆柱筒振动物理方程,尽管尚不成熟,但很可引起讨论。它对密度传感器的设计、制造与定标将会起一定作用。文中又对整个传感器的电、磁、力系统及各种边界条件对振动的影响做了定性分析,也对最小能量振型与压力关系、可靠性与误差计算做了定量计算,还提出一组设计计算公式,推荐了精确修正参数的方法。最后进行了实际验证,并对进一步的工作方向和制造要点提出一些看法。
In this paper, from the application point of view, the internal pressure generated in the unit under the pressure difference is considered one by one, especially the calculation of the hoop force takes an approximate form, get better results. For two different situations, the physical equation of vibration of the cylinder considering the gas density is established, which is still immature, but it may cause discussion. It will density sensor design, manufacture and calibration will play a role. The paper also qualitatively analyzes the influence of the whole sensor’s electric, magnetic and force systems and various boundary conditions on the vibration, and also makes a quantitative calculation of the relationship between the minimum energy vibration mode and pressure, reliability and error calculation, and also proposes a set of Design calculation formula, recommended a precise method of correcting parameters. Finally, the actual verification, and further work on the direction and make some points made.