【摘要】 在剖析传统热线热膜风速计存在问题的基础上,提出了解决这些问题的思路、方案和具体的线路模型,形成了预移相型热线热膜流速计的构思。首先对传统热线风速计的物理模型进行改进,用数学方程加以描述并求出其解析解提出一系列设计公式,进而选择适当的线路环节,编制相应的软件,实现上述物理模型、数学方程和设计公式的要求,形成了具有6大特色的"IFV900A型智能热线热膜流速计"。更多还原

【Abstract】 A new type of intelligent hot-wire/film anemometer was developed by analyzing the shortcomings of traditional hot-wire/film anemometer.The author established a more precise dynamic equation of constant-temperature hot-wire/film anemometer with main bridge prephasing circuit and gave its analytic solution and a set of formulae for design.Three adjustment parameters are reduced,thus the adjusting procedure is greatly simplified.The new type of anemometer can work more stably for its synchronous bias circuit than the traditional anemometer.And it also has other advantages.更多还原