直接斜率法直接将波前传感器的测量量与变形镜的响应特性建立起对应关系，通过算法直接计算出控制电压信号。用 64个子孔径的哈特曼波前传感器对畸变波前进行仿真探测，按照变形镜面形为影响函数加权叠加的假设，可以求解出加在各个驱动器上的电压值，进而可以对仿真的 32单元变形镜进行控制，校正波前。仿真的结果显示，直接斜率法可以有效校正畸变波前。

Direct wavefront gradient algorithm directly establishes correspondence between measurands of the wavefront sensor and response characteristics of the deformable mirror. The voltage can be directly calculated by the algorithm. We use Hartmann wavefront sensor with 64 sub-apertures to detect the distorted wavefront. Based on the hypothesis that of deformable mirror is the weighted addition of the influence function, each of the voltage values applied on the drive is solved by the algorithm. The simulated 32 units of deformable mirror can be controlled and then distorted wavefront can be restored. The simulation result shows that direct wavefront gradient algorithm can effectively adjust the distorted wavefronts.