快速准确地获得变形镜各驱动器应加载的电压是自适应光学波前相位控制算法的核心研究内容。基于驱动器位置波前相位特征计算驱动器应加载的电压可以大幅降低数据计算量和收敛步数，有利于实现变形镜的高速实时控制且达到波前控制的精度要求。利用该算法建立神光II升级激光装置45驱动单元变形镜控制的计算模型，对第2～36项泽尼克(Zernike)多项式像差[峰谷(PV)值为2 μm]逐项进行拟合的结果显示，收敛步数在9次以内驱动器位置相位控制精度即可达到0.01 μm。面形拟合结果显示该变形镜可对前15项泽尼克多项式像差进行有效控制，满足神光II升级激光装置对光束波前相位控制的要求。

One core study of adaptive optics wavefront control algorithm is to obtain the loaded voltage of each actuator rapidly and accurately. The algorithm based on the phase correction at the actuator position can dramatically reduce the data calculation, achieve the required phase precision with less convergence steps and realize the high-speed real-time control of the deformable mirror. Based on this algorithm, the calculation model for the phase control of 45 actuators deformable mirror of the SG-II update laser facility is set up. The simulation of the 2nd～36th items of Zernike polynomial aberrations [peak-to-valley (PV) value of 2 μm] shows that the phase correction precision of 0.01 μm can be achieved within 9 steps. The fitted shape of the first 15 items of Zernike polynomial aberrations shows that the aberration control ability of the deformable mirror can meet the requirements of the laser facility.