Design of RTDA controller for industrial process using SOPDT model with minimum or non-minimum zero

•RTDA control law computation formula for SOPDT process has been developed.•The performance of the proposed RTDA controller design is compared with RTDA controller design based on FOPDT control law.•The theoretical stability derivation for RTDA controller based on SOPDT model has been formulated.•Applicability of proposed RTDA controller scheme is demonstrated on Industrial non-linear CSTR process.

This research paper focuses on the design and development of simplified RTDA control law computation formulae for SOPDT process with minimum or non-minimum zero. The design of RTDA control scheme consists of three main components namely process output prediction, model prediction update and control action computation. The systematic approach for computation of the above three components for SOPDT process with minimum or non-minimum zero is developed in this paper. The design, implementation and performance evaluation of the developed controller is demonstrated via simulation examples. The closed loop equation, block diagram representation and theoretical stability derivation for RTDA controller are developed. The performance of proposed controller is compared with IMC, SPC, MPC and PID controller and it is demonstrated on Industrial non-linear CSTR process.