论文部分内容阅读
为改进现有弧光灯热流标定系统的光源装置,有必要对其进行仿真研究。以等亮度曲线分布为依据设计了氙灯模型,计算了氙灯发光功率的分布,借助角度切趾文件模拟了氙灯发光角度分布,然后建立了整个标定光源装置的仿真模型,计算了积分器出口处的辐照度。与实验数据比较,4种积分器出口平均辐照度实验值相对仿真值损失了约49%,且这种损失随着积分器口径增大而增大。经分析验证,仿真值损失的主要原因是实验所用椭球镜聚焦率比设计值衰减了约40%,损失会随着积分器口径增大的主要原因是所建氙灯模型较好地模拟了氙灯发光功率密度由阴极到阳极递减这一特征。
In order to improve the light source device of the existing arc lamp heat flow calibration system, it is necessary to carry on the simulation research. The xenon lamp model was designed based on the distribution of equal brightness curves. The distribution of luminous power of xenon lamp was calculated. The angle distribution of xenon lamp was simulated with the angle apodization file. Then the simulation model of the whole calibration light source device was established. radioactivity. Compared with the experimental data, the average irradiance of the four kinds of integrators is about 49% lower than the simulation value, and the loss increases with the increase of the integrator diameter. After analysis and verification, the main reason for the loss of the simulation value is that the focusing rate of the ellipsoid mirror used in the experiment has been reduced by about 40% from the designed value. The main reason for the loss increasing with the integrator diameter is that the xenon lamp model is better simulated by xenon lamp Luminous power density decreases from cathode to anode.