Analysis and Design of a Servo Robust Control System

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This paper provides further advancement of the analysis and design of robust servo nonlinear control systems. A backlash element is taken into account as a nonlinear section of the plant considered in this research. A robust controller design is achieved by a number of successive steps. Based on the difference equations of its stages, the robust controller is realized by two microcontrollers sections. Taking into consideration the Euler's approximation, the method of the D-partitioning, the describing-function stability analysis and the robust assessment are applied before and after the robust compensation. This research is a further development of the author’s work on the analysis and design of linear, nonlinear and digital robust control systems. The suggested tool for analysis and design of servo nonlinear robust control systems is essential and beneficial for the further development of control theory in this area
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Robust Servo System; Nonlinear; D-Partitioning Stability Analysis; Interaction; Describing Function Analysis; Discrete-Time Domain; Microcontrollers

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