Frequency domain analysis and control of a Two Input-Two Output time-delay system

https://doi.org/10.58571/CNCA.AMCA.2025.017

Resumen: This work presents the analysis and control of the Wood-Berry distillation column model, a two-input-two-output (TITO) system with time delays. The study is conducted in the frequency domain, demonstrating the effectiveness of the individual channel analysis and design framework. Within this framework, the multivariable system is decomposed into single-input, single-output (SISO) subsystems while preserving the original multivariable dynamics and delay effects. The individual channel analysis enables: clear visualization of delay impacts on system stability, design of controllers with robust stability margins, and the introduction of the delay margin concept as a key design parameter. The results here presented confirm that classical control techniques—based on Nyquist and Bode diagrams—can be successfully applied to design effective controllers for this system. Simulation results of the control system are presented.

¿Cómo citar?

Estrada López, O., Liceaga Castro, E. & Liceaga Castro, J. (2025). Frequency domain analysis and control of a Two Input-Two Output time-delay system. Memorias del Congreso Nacional de Control Automático 2025, pp. 97-102. https://doi.org/10.58571/CNCA.AMCA.2025.017

Palabras clave

Multivariable systems, time-delays, linear control systems, control system design.

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