【摘要】 主流的微粒粒度分布测量仪器的工作原理为光散射原理,在前向光散射式微粒粒度分布的测量理论中往往都是以球模型代替真实的微粒。但是在实际测量中由于微粒形体的变化往往影响测量结果的准确性。对此,本文在以Mie散射理论为原理,依据前向接收器接收的前向散射光信息以获取微粒大小信息的测量基础上,对微粒穿越光敏区时的时域与空域的特征以及相关性开展了研究,从数学上定义了微粒的形体分布函数,提出了一种依据光散射功率谱和频谱分布特征来获取微粒形体分布信息的方法,完善了微扰修正理论的应用性,有效地改善了形体的影响问题,从而可提高微粒粒度分布测量结果的准确性。更多还原

【Abstract】 In general,the particle’s counter works in light scattering principal in whom the particle is thought as a ball model,but in real case the measuring result is often affected with the shape of them.In this paper,the forward-scattering signal is received by the forward-receiver so as to obtain the preliminary signal of its size bases on the Mei scattering theory.In the meanwhile,the TS(time-space) characteristics of a scattering particle and their relationship are stud- ied when it is passing through the scattering area,In addition to this,the distribution function of particles’ shape is defenited in terms of math’s method and a new method is putout of which the distribution of particles’ shape is captured in according to the power spectrum and spectral distribution characterist of light scattering and finally,the utility of the perturbation ameliorating method and the effect of the particles’ shape is modified,so far,the accuracy of measurement of the parti- cles’ size is improved effectively.更多还原