A method of designing the controller to solve the robust servomechanism problem is applied in the case of an electrohydraulic servo actuating primary flight control. This method is based on the well‐known solution consisting of two separate devices: a servocompensator, in fact an internal model of the exogenous dynamics, including the reference commands and disturbance signals; and a stabilizing compensator. The proof is made involving the servocompensator structure which is close to the one designed for step signals. The stabilizing compensator is assured by way of a linear quadratic optimal procedure. An antiwindup compensation is added to deal with the adverse effects caused by actuator saturation.
Ursu, I., Tecuceanu, G., Ursu, F., Sireteanu, T. and Vladimirescu, M. (1998), "From robust control to antiwindup compensation of electrohydraulic servo actuators", Aircraft Engineering and Aerospace Technology, Vol. 70 No. 4, pp. 259-264. https://doi.org/10.1108/00022669810225287Download as .RIS
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