[EN] The variable stiffness actuators are devices that change the position and stiffness of a robot simultaneously. In recent years have been designed and developed many devices of this type, hoping to ensure safety in ...

[EN] This paper presents the controller design for output feedback by using LMI to filfull H2 and H∞ performance criteria and pole placement. Based on the above design, it is shown how to compute the parameters of a PID ...

[EN] The offshore vessels require a high precision speed control and dynamic positioning. Adverse weather conditions and/or rough waves give rise to high disturbances that must be rejected by the control system to keep the ...