在分析角度误差对测量结果作用机制的基础上, 采用不同的角度误差, 通过对六组单峰(82 nm、104 nm、350 nm、431 nm、816 nm和865 nm)和三组双峰(137/601 nm、242/750 nm和470/895 nm)颗粒体系的模拟数据及306 nm/974 nm双峰颗粒体系实测动态光散射数据的反演, 研究了权重估计和基线计算两种途径中角度误差对反演结果的作用. 结果表明, 角度误差对颗粒粒度分布反演结果的影响是由基线计算和权重系数估计的双重作用途径产生的; 权重因素对峰值和性能误差的影响明显大于基线因素, 仅在小颗粒窄峰测量时, 基线因素对峰值误差的影响略超权重因素, 但权重因素对性能误差的影响仍然大于基线因素.

The mechanism of angular error on measurement result is analysed. Then, the influence way of angular error on inversion results in two approaches, namely, weight coefficient and baseline are studied by simulation of six groups of unimodal particle size distribution system (82 nm, 104 nm, 350 nm, 431 nm, 816 nm and 865 nm) and three groups of bimodal particle size distribution system (137/601 nm, 242/750 nm and 470/895 nm) and measurement of 306/974 nm bimodal particle size distribution system with different angular error. The results show that the influence of angular error on inversion results is derived from the baseline factor and weight coefficient factor simultaneously. The influence of weight coefficient factor on peak error and performance error is much bigger than the baseline factor. There is one exception that for the unimodal narrow distribution of small particles, the influence of baseline factor on peak error is a little more than weight coefficient factor, but the influence of weight coefficient factor on performance error is bigger than baseline factor.