基于改进粒子群算法的LED光源阵列优化

Optimization of LED light source array based on improved particle swarm algorithm

为了提高发光二极管(light emitting diode,LED)光源阵列的光照均匀度,提出一种改进粒子群算法和新型等差LED阵列排布方式。根据光照分布模型建立了照射面的光照均匀度评价函数,使用改进的粒子群算法对新型等差LED阵列、矩形及圆形阵列进行优化。将优化后的LED阵列数据导入光学软件TracePro中进行仿真验证,得到优化后等差、矩形及圆形LED阵列的光照均匀度分别为82.89%、73.31%及78.56%,比优化前LED阵列的光照均匀度分别提高了15.84%、10.65%及15.57%。研究结果表明,改进后的粒子群算法收敛速度更快、精度更高,且提出的新型等差LED阵列有着更好的光照均匀度。

In order to improve the illumination uniformity of the light emitting diode(LED)light source array,an improved particle swarm algorithm and a new arithmetic LED array arrangement method were proposed.According to the illumination distribution model,the illumination uniformity evaluation function of the illuminated surface was established,and the improved particle swarm algorithm was used to optimize the new arithmetic,rectangular and circular LED arrays.The data of the optimized LED array was imported into the optical software TracePro for simulation and verification,and the illumination uniformity of the optimized arithmetic,rectangular and circular LED arrays was 82.89%,73.31%and 78.56%,respectively,which was 15.84%,10.65%,and 15.57%higher than the illumination uniformity of the LED array before optimization.The research results show that the improved particle swarm algorithm has faster convergence speed and higher convergence accuracy,and the proposed new arithmetic LED array has better illumination uniformity.