K
Kefu Liu
Researcher at Lakehead University
Publications - 78
Citations - 5039
Kefu Liu is an academic researcher from Lakehead University. The author has contributed to research in topics: Nonlinear system & Control theory. The author has an hindex of 31, co-authored 73 publications receiving 4324 citations. Previous affiliations of Kefu Liu include Technical University of Nova Scotia & Dalhousie University.
Papers
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Brief paper: Direct adaptive fuzzy control of nonlinear strict-feedback systems
TL;DR: This paper focuses on adaptive fuzzy tracking control for a class of uncertain single-input /single-output nonlinear strict-feedback systems and a novel direct adaptive fuzzy Tracking controller is constructed via backstepping.
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Robust Adaptive Fuzzy Tracking Control for Pure-Feedback Stochastic Nonlinear Systems With Input Constraints
TL;DR: The proposed adaptive fuzzy tracking controller guarantees that all signals in the closed-loop system are bounded in probability and the system output eventually converges to a small neighborhood of the desired reference signal in the sense of mean quartic value.
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Neural-Based Adaptive Output-Feedback Control for a Class of Nonstrict-Feedback Stochastic Nonlinear Systems
TL;DR: It is shown that the proposed controller can guarantee that all the signals in the closed-loop system are semi-globally uniformly ultimately bounded in the sense of mean quartic value.
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Adaptive Neural Tracking Control for a Class of Nonstrict-Feedback Stochastic Nonlinear Systems With Unknown Backlash-Like Hysteresis
TL;DR: It is shown that the proposed controller guarantees that all the signals in the closed-loop system are four-moment semiglobally uniformly ultimately bounded, and the tracking error eventually converges to a small neighborhood of the origin in the sense of mean quartic value.
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A tunable high-static–low-dynamic stiffness vibration isolator
Naibiao Zhou,Kefu Liu +1 more
TL;DR: In this paper, a vibration isolator with high-static-low-dynamic stiffness (HSLDS) properties is presented. But the authors focus on the analytical properties of the isolator, and the analytical model for each of the springs is established and tuning parameters are identified.