L1 adaptive control of uncertain gear transmission servo systems with deadzone nonlinearity.

ISA Trans

The Institute of Information Technology, China Aerospace Science and Industrial Corporation, Beijing 100070, China.

Published: September 2015


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Article Abstract

This paper deals with the adaptive control problem of Gear Transmission Servo (GTS) systems in the presence of unknown deadzone nonlinearity and viscous friction. A global differential homeomorphism based on a novel differentiable deadzone model is proposed first. Since there exist both matched and unmatched state-dependent unknown nonlinearities, a full-state feedback L1 adaptive controller is constructed to achieve uniformly bounded transient response in addition to steady-state performance. Finally, simulation results are included to show the elimination of limit cycles, in addition to demonstrating the main results in this paper.

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http://dx.doi.org/10.1016/j.isatra.2015.07.009DOI Listing

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