【摘要】 为了解决模糊控制中的强化调节作用与静态稳定性之间的矛盾,针对污水处理的控制系统的非线性、大惯性、时变和难以建立精确模型等难点,提出将模糊控制的强鲁棒性和传统PID控制的优稳态特性相结合的思路,设计了模糊自适应PID控制模型。通过MATLAB仿真和实际应用表明,与常规的PID控制相比,采用自适应模糊PID控制后,溶解氧控制系统的响应速度加快,超调量减小,具有更好的控制效果,更强的鲁棒性和抗干扰性。该控制方法在黑龙江科技学院污水处理控制系统中得到了应用并得到了预期效果。更多还原

【Abstract】 To solve the conflict of between static stability and strengthen regulation in the fuzzy control and aiming at the difficulties in the process of sewage treatment,such as non-linearity,large inertia,time-varying that it is difficult to establish an accurate model,this paper proposes the idea that the robustness of fuzzy control is combined with steady state performance of conventional PID control to design of adaptive fuzzy PID control model.Compared with the commonly used PID control,Matlab simulation and practical application show that the dissolved oxygen control system has the advantages of fast response,overshoot decreasing,better control performance,more powerful robustness and anti-interference after utilizing adaptive fuzzy PID control.The control method is applied to Sewage treatment system in the Heilongjiang Institute of Science and Technology and the desired effect is got.更多还原