• P VAMSI KRISHNA
• Dr.R SRINU NAIK
• Y CHITTEMMA
• S NAVEENA

This study presents an innovative and inclusive method to enhance control at a Waste Water Treatment Plant (WWTP) by suggesting the integration of a centralized Proportional Integral (PI) controller. The main aim is to optimize and elevate the efficiency of the WWTP's natural treatment phases. To realize this goal, an intricate numerical model is established based on four nonlinear differential equations that meticulously capture the complex dynamics of the WWTP's operations. In this pursuit, the WWTP's transfer function model (2*2) is carefully derived, with thorough consideration of different regulated factors like the air circulation rate and return reuse rate. With the control strategy customized for each specific plant output and contribution, the model subsequently approximates the equivalent transfer function (ETF) for each contributing factor. The core of this methodology revolves around finely tuning and optimizing the PI regulator, achieved through an advanced frequency response technique. Through meticulous adjustments to the PI regulator, the desired strength characteristics are effectively attained, resulting in desirable outcomes in terms of minimizing servo and interaction effects within the WWTP. This approach not only boosts overall performance but also advances energy efficiency and cost-effectiveness in the treatment process. The proposed model is implemented in MATLAB/SIMULINK environment. This choice of platform not only showcases the approach's adaptability but also enhances its accessibility to researchers and practitioners in the field.

MIMO processes; Dynamic relative gain array; Energy transmission ratio; Effective relative gain array; Relative frequency array; Equivalent transfer function matrix; PI/PID; Decoupling control; Diagonal dominance; Robustness

"Method for Designing PI/PID Controllers for MIMO Process Using Equivalent Transfer Function Approach", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.10, Issue 8, page no.f510-f519, August-2023, Available :http://www.jetir.org/papers/JETIR2308560.pdf

"Method for Designing PI/PID Controllers for MIMO Process Using Equivalent Transfer Function Approach", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.10, Issue 8, page no. ppf510-f519, August-2023, Available at : http://www.jetir.org/papers/JETIR2308560.pdf