Robust Control of Two Link Rigid Manipulator
Keywords:
H∞ controller, linear fractional transformation (LFT), µ-synthesis controller, parametric uncertainty, robust control, two link rigid manipulator (TLRM).Abstract
Two Link Rigid Manipulator (TLRM) is highly
unstable and non-linear system thus its stability is a matter of concern. This paper presents Lagrange-Euler method for deriving the dynamics of TLRM. The uncertain model is considered using LFT. Parametric uncertainty in moment of inertia and co-efficient of friction in the TLRM is considered and uncertainty in actuators. Two different robust control strategies, H∞ and µ-synthesis are used and compared. Results
show that µ-synthesis controller has superior robust
performance of the proposed two robust control methods.
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