设计单级倒立摆的品级模糊控制器。运用串级模糊控制器控制单级倒立摆，内环模糊控制器控制角度，外环模糊控制器控制位移，运用种群遗传算法优化两个模糊控制器的参数。-Grade of single-stage inverted pendulum fuzzy controller is designed.Cascade fuzzy controller is used to control a single inverted pendulum, the inner ring control Angle o