Adaptive neural control for a class of non-affine stochastic non-linear systems with time-varying delay: a Razumikhin–Nussbaum method
Adaptive neural control for a class of non-affine stochastic non-linear systems with time-varying delay: a Razumikhin–Nussbaum method
- Author(s): Z. Yu ; Z. Jin ; H. Du
- DOI: 10.1049/iet-cta.2010.0751
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- Author(s): Z. Yu 1 ; Z. Jin 1 ; H. Du 1
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View affiliations
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Affiliations:
1: Department of Automation, East China University of Science and Technology, Shanghai, People's Republic of China
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Affiliations:
1: Department of Automation, East China University of Science and Technology, Shanghai, People's Republic of China
- Source:
Volume 6, Issue 1,
5 January 2012,
p.
14 – 23
DOI: 10.1049/iet-cta.2010.0751 , Print ISSN 1751-8644, Online ISSN 1751-8652
This study focuses on the problem of adaptive neural control for a class of uncertain non-affine stochastic non-linear systems with time-varying delay. Major technical difficulties for this class of systems lie in: (i) the unknown control direction embedded in the unknown control gain functions and (ii) the unknown system function with unknown time-varying delay. A novel Razumikhin–Nussbaum lemma is proposed to overcome the mentioned difficulties. Moreover, based on the Razumikhin functional approach, an adaptive neural controller is developed for this class of systems by exploring the application of Nussbaum functions to stochastic non-linear systems. The proposed design guarantees that all the error variables in the closed-loop systems are four-moment semi-globally uniformly ultimately bounded in a compact set, while the tracking error remains in a neighbourhood of the origin. The effectiveness of the proposed design is verified by simulation results.
Inspec keywords: nonlinear control systems; closed loop systems; functional analysis; stochastic systems; delays; control system synthesis; adaptive control; neurocontrollers
Other keywords:
Subjects: Distributed parameter control systems; Mathematical analysis; Nonlinear control systems; Self-adjusting control systems; Neurocontrol; Time-varying control systems; Control system analysis and synthesis methods
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