摘要
污水处理过程中进水流量、进水水质变化剧烈,为了出水水质达到预定指标,要求曝气反应时溶解氧浓度控制精确,本文以该系统中溶解氧浓度为控制对象,研究了溶解氧的非线性PID控制方法,然后与常规PID控制进行了比较,仿真结果表明,溶解氧的非线性PID控制效果更稳定。
The water flow and quality changes violently in the sewage environment. In order to content quality standard, dissolved oxygen（DO） required is accurate. The paper proposes nonlinear PID controller to realize the control of DO. The results of simulation show what nonlinear PID control is more stable than conventional PID control.
出处
《仪器仪表用户》
2012年第3期23-26,共4页
Instrumentation
关键词
污水处理
溶解氧
非线性
waster treatment
dissolved oxygen
nonlinear
