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

Area of Science:

• Process Control
• Control Engineering
• Automation Systems

Background:

• Second-Order Plus Dead Time (SOPDT) processes are common in industrial applications.
• Existing control strategies may face challenges with non-minimum phase zeros.
• Simplified control law computation is crucial for efficient implementation.

Purpose of the Study:

• To develop simplified Real-Time Dynamic Analysis (RTDA) control law computation formulae.
• To address SOPDT processes with both minimum and non-minimum zeros.
• To systematically design and evaluate the RTDA control scheme.

Main Methods:

• Development of systematic computation for RTDA's three components: process output prediction, model prediction update, and control action computation.
• Design and implementation of the RTDA controller.
• Performance evaluation through simulation and comparison with IMC, SPC, MPC, and PID controllers.

Main Results:

• A systematic approach for RTDA control law computation for SOPDT processes was successfully developed.
• The RTDA controller demonstrated effective performance on a non-linear CSTR process.
• Comparative analysis showed competitive or superior performance against IMC, SPC, MPC, and PID controllers.

Conclusions:

• The proposed simplified RTDA control law computation formulae are effective for SOPDT processes.
• The RTDA controller offers a viable and efficient alternative for industrial process control.
• Further validation on diverse industrial processes is recommended.