Journal ArticleDOI
Adaptive Fuzzy Control for Nonstrict-Feedback Systems With Input Saturation and Output Constraint
Qi Zhou,Lijie Wang,Chengwei Wu,Hongyi Li,Haiping Du +4 more
- Vol. 47, Iss: 1, pp 1-12
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TLDR
An adaptive fuzzy control approach for a category of uncertain nonstrict-feedback systems with input saturation and output constraint is presented, and the simulation results reveal the effectiveness of the proposed approach.Abstract:
This paper presents an adaptive fuzzy control approach for a category of uncertain nonstrict-feedback systems with input saturation and output constraint. A variable separation approach is introduced to overcome the difficulty arising from the nonstrict-feedback structure. The problem of input saturation is solved by introducing an auxiliary design system, and output constraint is handled by utilizing a barrier Lyapunov function. Combing fuzzy logic system with the adaptive backstepping technique, the semi-global boundedness of all variables in the closed-loop systems is guaranteed, and the tracking error is driven to the origin with a small neighborhood. The stability of the closed-loop systems is proved, and the simulation results reveal the effectiveness of the proposed approach.read more
Citations
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Inverse–adaptive multilayer T–S fuzzy controller for uncertain nonlinear system optimized by differential evolution algorithm
TL;DR: A novel inverse–adaptive multilayer T–S fuzzy controller (IFC + AF) optimized with differential evolution (DE) soft computing algorithm available for a class of robust control methods applied in uncertain nonlinear SISO and MISO systems is proposed.
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Adaptive Finite Time Path-Following Control of Underactuated Surface Vehicle With Collision Avoidance
TL;DR: A finite time command filtered backstepped approach is adopted as the main control framework along with the first-order sliding mode differentiator introduced to compute the derivatives of virtual control laws, and the analytical computational burden in the backstepping control is reduced for the design of the control for the underactuated surface vessel.
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Bi-level artificial intelligence model for risk classification of acute respiratory diseases based on Chinese clinical data
TL;DR: Based on the semi-structured data of Chinese Electronic Medical Records (CEMRs) from the China Hospital Pharmacovigilance System, the authors proposed a bi-level artificial intelligence model for the risk classification of acute respiratory diseases.
Journal ArticleDOI
Neural networks-based adaptive tracking control of multi-agent systems with output-constrained and unknown hysteresis
Zhihua Guo,Hong Xue,Yingnan Pan +2 more
TL;DR: The transformation technique is introduced in this paper, which can convert the original system to a constrained or completely unconstrained system and indicates that all signals of the closed-loop system are semi-globally uniformly ultimately bounded, and the tracking error converges to a small neighborhood of the origin.
Journal ArticleDOI
A self-adaptive preference model based on dynamic feature analysis for interactive portfolio optimization
TL;DR: This paper proposes an interactive multicriteria decision-making method and explores a self-adaptive preference model based on dynamic feature analysis (denoted RFFS-DT) to capture the decision maker (DM)’s complex preferences in the decision- making process.
References
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Book
Adaptive Fuzzy Systems and Control: Design and Stability Analysis
TL;DR: This paper presents a meta-analysis of the design and stability analysis of fuzzy identifiers of nonlinear dynamic systems fuzzy adaptive filters of adaptive fuzzy controllers using input-output linearization concepts.
Journal ArticleDOI
Barrier Lyapunov Functions for the control of output-constrained nonlinear systems
TL;DR: This paper presents control designs for single-input single-output (SISO) nonlinear systems in strict feedback form with an output constraint, and explores the use of an Asymmetric Barrier Lyapunov Function as a generalized approach that relaxes the requirements on the initial conditions.
Journal ArticleDOI
Neural network-based adaptive dynamic surface control for a class of uncertain nonlinear systems in strict-feedback form
TL;DR: A backstepping based control design for a class of nonlinear systems in strict-feedback form with arbitrary uncertainty is developed and is able to eliminate the problem of "explosion of complexity" inherent in the existing method.
Journal ArticleDOI
Adaptive tracking control of uncertain MIMO nonlinear systems with input constraints
TL;DR: The auxiliary design system is introduced to analyze the effect of input constraints, and its states are used to adaptive tracking control design, and the closed-loop semi-global uniformly ultimate bounded stability is achieved via Lyapunov synthesis.
Journal ArticleDOI
Adaptive Neural Control for Output Feedback Nonlinear Systems Using a Barrier Lyapunov Function
TL;DR: A barrier Lyapunov function (BLF) is introduced to address two open and challenging problems in the neuro-control area: for any initial compact set, how to determine a priori the compact superset on which NN approximation is valid; and how to ensure that the arguments of the unknown functions remain within the specified compact supersets.
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