The design of a centralized proportional integral controller for a single-tank activated sludge process is presented. The relative normalized gain array (RNGA) and dynamic relative gain array (dRGA) were adopted for enhancing the closed-loop performance of a multivariable system. The dRGA method gave superior and acceptable responses compared to the RNGA method. The designated error indices decreased significantly for the dRGA method compared with the RNGA method. The dRGA method is simple and effective, since it considers the process dynamics to provide an accurate interaction assessment. The designed centralized controller overcomes the limitations of the decoupler for stability challenges when compared with decentralized controllers.

中文翻译：

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活性污泥工艺集中比例积分控制器设计

介绍了一种用于单槽活性污泥法的集中式比例积分控制器的设计。采用相对归一化增益阵列（RNGA）和动态相对增益阵列（dRGA）来增强多变量系统的闭环性能。与 RNGA 方法相比，dRGA 方法给出了更好且可接受的响应。与 RNGA 方法相比，dRGA 方法的指定误差指数显着降低。dRGA 方法简单而有效，因为它考虑了过程动态以提供准确的相互作用评估。与分散式控制器相比，设计的集中式控制器克服了解耦器对稳定性挑战的限制。