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Latin American applied research

versión impresa ISSN 0327-0793versión On-line ISSN 1851-8796


TEPPA-GARRAN, P  y  GARCIA, G. Active disturbance rejection control tuning employing the lqr approach for decoupling uncertain multivariable systems. Lat. Am. appl. res. [online]. 2014, vol.44, n.4, pp.355-361. ISSN 0327-0793.

The ADRC tuning is essentially a pole-placement technique and the desired performance is indirectly achieved through the location of the closed-loop poles. However, the final choice of these poles becomes a trial-and-error strategy. In contrast with pole-placement, in the LQR method, the desired performance objectives are directly and globally addressed by minimizing a quadratic function of the state and control input. ADRC tuning employing the LQR approach is then applied for decoupling uncertain MIMO systems. This is done by considering all the coupling and interference interactions between the channels of the system as disturbances, using an ESO to estimate them in real time and then canceling its effect employing the estimate as part of the control signal.

Palabras clave : Active Disturbance Rejection Control (ADRC); Extended State Observer (ESO); Linear Quadratic Regulator (LQR); Multiple-Input-Multiple-Output (MIMO) Systems; Decoupling.

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