针对在氧化沟生物处理系统中广泛存在的具有大惯性、长滞后和一定不确定性系统的控制问题，在简单模糊控制器的基础上引入迁移偏差并采用Ｓ曲线量化和动态调整迁移偏差和稳定控制输出值逐步逼近精确控制目标实现了模糊控制的高精度控制，大量仿真和实际现场实验证明了这一结论。 Aiming at the control problems of the system with large inertia, long delay and uncertainties, which are widely existed in the biological treatment system of oxidation ditch, the migration deviation is introduced based on the simple fuzzy controller and the S-curve is used to quantify and dynamically adjust the migration deviation and stability The control output value gradually approaches the precise control target and realizes the high-precision control of the fuzzy control. A large number of simulations and actual field experiments prove this conclusion.