采用复合形算法建立数学模型,以PDP三维模拟仿真软件为基础,以PDP放电效率为目标函数,以扫描电极宽度、氙气比例、气体压强和驱动电压为搜索变量,进行最优化设计来提高单元的放电效率。模拟结果表明:搜索变量坐标为(80,15,498,230)时,即扫描电极宽度、氙气比例、气体压强及维持电压分别为80 μm、15％、6.6×104 Pa和230 V时,对应的放电效率取得最大值110％,比搜索变量坐标为(160,5,310,210)初始复合形时的放电效率提高一倍多,且真空紫外辐射能量也比初始复合形时增加79％。模拟结果表明采用复合形算法可以得出影响PDP放电性能的各因素的最优化组合,使PDP单元的放电效率和放电强度都大幅提高。

Due to complex function relation between discharge characteristics and relative parameters, the complex method is used to optimize the performance of PDP. Numerical model based on complex method is set in the article, where the discharge characteristics are computed by the three-dimensional PDP simulation software. The discharge efficiency is the objective function. The scan electrode width, the xenon content, the gas pressure and the sustain voltage are the search variables in the model. The simulation results indicate that the maximum discharge efficiency is 11％ when the search variables are (80,15,498,230), which means that the scan electrode width, the xenon content, the gas pressure and the sustain voltage are 80　μm、15％、6.6×104 Pa and 230 V. The discharge efficiency in optimized parameters is about two times larger than that in initial parameters. And the vacuum energy increases 79％ compared to the initial parameters. So the optimized parameters can be obtained to increase the discharge efficiency and the discharge intensity.