摘要
针对污水处理过程中,溶解氧浓度实时变化难以控制的问题,提出一种基于改进GPC-PID的DO值控制算法。通过改进GPC-PID算法的滚动优化原理,系统能够在线自整定PID参数,在溶解氧浓度达到稳定状态时无需反复求解Diophantine方程。改进后的算法减少了方程的求解次数和复杂度,降低了系统的运算量,同时解决模型时滞带来的控制问题。仿真结果表明,运用改进的GPC-PID预测控制算法能获得较好控制效果,同时提高了系统的稳定性和优化计算的快速性。
aiming at the problem that the real-time change of dissolved oxygen （do） concentration is difficult to control in the wastewater treatment process, a do value control algorithm based on improved gpc-pid is proposed, by improving the rolling optimization principle of gpc-pid algorithm, the system can adjust the pid parameters online, and no need to solve the diophantine equation again and again when the concentration of dissolved oxygen is stable. the improved algorithm reduces the time and complexity of solving the equations, reduces the computation of the sys- tem, and solves the control problems caused by time delay, the simulation results show that the improved gpc-pid pre- dictive control algorithm can get better control effect, and improve the stability of the system and the fast calculation of the optimization.
作者
刘向
赵敏
LIU Xiang ZHAO Min(School of Optical-Electronic Information and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, Chin)
出处
《电子科技》
2017年第1期87-90,共4页
Electronic Science and Technology
关键词
溶解氧浓度
污水处理
预测控制
广义预测控制PID
dissolved oxygen concentration
wastewater treatment
predictive control
generalized predictive control pid
