Robustness analysis of a PI controller for a hydraulic actuator

Abstract:

In this work the authors address the problem of robustness of the classic PI controller implemented in a Hydraulic Servo-Actuator (HSA), by presenting a strategy based on the definition of a linear model of the system and the identification of its parameters for different working points. The variation of these parameters is considered as a measure of parametric uncertainty of the linear model. These uncertainties along with the definition of a nominal plant are used to analyze the robustness of the system implementing the Small Gain Theorem. Theoretical and experimental results show that a PI controller can provide robustness to the HSA.

Año de publicación:

2015

Keywords:

• Small gain theorem
• PI Controller
• robustness
• Servo-hydraulic actuator

Fuente:

scopus