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Enfoque UTE

versión On-line ISSN 1390-6542versión impresa ISSN 1390-9363

Resumen

CHAMORRO, William  y  RUEDA, Pablo Velarde. (Linear Quadratic Regulator and Model Predictive Control Applied to a Four-Tank System: A Performance Comparison). Enfoque UTE [online]. 2018, vol.9, n.1, pp.204-216. ISSN 1390-6542.  https://doi.org/10.29019/enfoqueute.v9n1.257.

This paper shows a comparison between two linear controllers, a PI-LQR and a Soft-Constrained MPC applied to a Four-Tank process, which main characteristics are the nonlinearities, multiple inputs and outputs coupled together and slow behavior. The model was linearized around an operating point by least square method. Also, a general mathematic formulation for both controllers is presented that can be extended to any process control. All the procedure was described in detail as well as the simulation results for both controllers. To achieve a real performance comparison the experimental data were obtained under the same conditions and all the response parameters were analyzed.

Palabras clave : MPC; LQR; optimal control; least square method, process control; 4-tank system.

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