Direct Adaptive Tracking Control for a Class of Pure-Feedback Stochastic Nonlinear Systems Based on Fuzzy-Approximation by Huanqing Wang, Xiaoping Liu, Qi Zhou, Hamid Reza Karimi

“…The problem of fuzzy-based direct adaptive tracking control is considered for a class of pure-feedback stochastic nonlinear systems. During the controller design, fuzzy logic systems are used to approximate the packaged unknown nonlinearities, and then a novel direct adaptive controller is constructed via backstepping technique. …”
Get full text

Experimental investigation of the second-mode internal solitary wave in continuous pycnocline and the applicability of weakly nonlinear theoretical models by Shaodong Wang, Hui Du, Gang Wei, Zhentao Chen, Jianqiao Shi, Zhenyang Lan

Subjects: “…applicability of weakly nonlinear theoretical models…”
Get full text

Multiple Solutions for Nonlinear Navier Boundary Systems Involving (p1(x),…,pn(x))-Biharmonic Problem by Qing Miao

Get full text

Enhanced Bearing Fault Detection Using Step-Varying Vibrational Resonance Based on Duffing Oscillator Nonlinear System by Yongbin Liu, Zhijia Dai, Siliang Lu, Fang Liu, Jiwen Zhao, Jiale Shen

“…Given this, a step-varying vibrational resonance (SVVR) method based on Duffing oscillator nonlinear system is proposed to enhance the weak status feature of bearing by tuning different parameters. …”
Get full text

Retracted: Numerical Solution of Nonlinear Fredholm Integrodifferential Equations by Hybrid of Block-Pulse Functions and Normalized Bernstein Polynomials by Abstract and Applied Analysis

Get full text

Analytic Solution for Nonlinear Multimode Beam Vibration Using a Modified Harmonic Balance Approach and Vieta’s Substitution by Y. Y. Lee

“…This paper presents a modified harmonic balance solution method incorporated with Vieta’s substitution technique for nonlinear multimode damped beam vibration. The aim of the modification in the solution procedures is to develop the analytic formulations, which are used to calculate the vibration amplitudes of a nonlinear multimode damped beam without the need of nonlinear equation solver for the nonlinear algebraic equations generated in the harmonic balance processes. …”
Get full text

Surface crystal-orientation-dependent second-order nonlinear optical properties of cubic boron arsenide (c-BAs) by Lipeng Zhu, Yachao Ma, Chuyi Zhou, Tanwen Lai, Aochi Jia, Yipeng Zheng, Kaili Ren, Dongdong Han, Jun Dong, Ze Xue, Yani Ren, Qiyi Zhao, Chuan He, Jiming Zheng

“…However, there is relatively little research on the nonlinear optical properties of c-BAs. Herein, the electronic, linear, and nonlinear second-order optical properties have been systematically investigated by the first principles calculation method. …”
Get full text

Power Flow in a Two-Stage Nonlinear Vibration Isolation System with High-Static-Low-Dynamic Stiffness by Ze-Qi Lu, Dong Shao, Hu Ding, Li-Qun Chen

“…Increasing both upper and lower nonlinear stiffness could bend the first resonant peak to the left. …”
Get full text

INTELLIGENT LIQUID LEVEL CONTROL OF A COUPLED NONLINEAR THREE TANK SYSTEM SUBJECTED TO VARIABLE FLOW PARAMETERS by MUSTEFA JIBRIL, MESAY TADESSE, NURYE HASSEN

“… In this paper, an intelligent control system technique is proposed to model and control of a nonlinear coupled three tank system. Two pumps fed the tank 1 and tank 2 and a fractional flow of these two pumps fed tank 3. …”
Get full text

Study on Tooth Profile Synthesis and Nonlinear Mechanical Property of Dual Shock Wave Sleeve Movable Tooth Transmission by Liu Jun, An Zijun

Subjects: Get full text

Global convergence in a modified RMIL-type conjugate gradient algorithm for nonlinear systems of equations and signal recovery by Yan Xia, Songhua Wang

Subjects: “…nonlinear systems of equations…”
Get full text

Existence and Asymptotic Behavior of Boundary Blow-Up Solutions for Weighted p(x)-Laplacian Equations with Exponential Nonlinearities by Li Yin, Yunrui Guo, Jing Yang, Bibo Lu, Qihu Zhang

“…This paper investigates the following p(x)-Laplacian equations with exponential nonlinearities: −Δp(x)u+ρ(x)ef(x,u)=0 in Ω, u(x)→+∞ as d(x,∂Ω)→0, where −Δp(x)u=−div(|∇u|p(x)−2∇u) is called p(x)-Laplacian, ρ(x)∈C(Ω). …”
Get full text

A Multiple-Kernel Relevance Vector Machine with Nonlinear Decreasing Inertia Weight PSO for State Prediction of Bearing by Sheng-wei Fei, Yong He

“…As the selection of the parameters of the kernel functions and the controlled parameter has a certain influence on the prediction results of MkRVM, nonlinear decreasing inertia weight PSO (NDIWPSO) is used to select its kernel parameters and controlled parameter. …”
Get full text

Research and Application of the Formula for Calculating Discharge Coefficient of the Spillway Broad Crest Weir Based on the Binary Nonlinear Fitting by YAN Zhifang, JIA Yunfei, WANG Yu

Subjects: “…binary nonlinear fitting…”
Get full text

Lyapunov Functions for a Class of Discrete SIRS Epidemic Models with Nonlinear Incidence Rate and Varying Population Sizes by Ying Wang, Zhidong Teng, Mehbuba Rehim

“…We investigate the dynamical behaviors of a class of discrete SIRS epidemic models with nonlinear incidence rate and varying population sizes. …”
Get full text

Enhanced Modeling and Control of Organic Rankine Cycle Systems via AM‐LSTM Networks Based Nonlinear MPC by Yang Sun, Ming Du, Xiao Qi

“…However, the inherent complexity, strong and unidentified nonlinearity, and control constraints pose significant challenges to designing an optimal controller for ORC systems. …”
Get full text

Neural Network-Based Nonlinear Fixed-Time Adaptive Practical Tracking Control for Quadrotor Unmanned Aerial Vehicles by Jianhua Zhang, Yang Li, Wenbo Fei

“…This brief addresses the position and attitude tracking fixed-time practical control for quadrotor unmanned aerial vehicles (UAVs) subject to nonlinear dynamics. First, by combining the radial basis function neural networks (NNs) with virtual parameter estimating algorithms, a NN adaptive control scheme is developed for UAVs. …”
Get full text

Application of Nonlinear Time-Fractional Partial Differential Equations to Image Processing via Hybrid Laplace Transform Method by B. A. Jacobs, C. Harley

“…This work considers a hybrid solution method for the time-fractional diffusion model with a cubic nonlinear source term in one and two dimensions. Both Dirichlet and Neumann boundary conditions are considered for each dimensional case. …”
Get full text

A Hybrid Fault-Tolerant Control for Nonlinear Active Suspension Systems Subjected to Actuator Faults and Road Disturbances by Hui Pang, Xue Liu, Yuting Shang, Rui Yao

“…This paper proposes a hybrid fault-tolerant control strategy for nonlinear active suspension subjected to actuator faults and road disturbances. …”
Get full text

Approximation-Based Fixed-Time Adaptive Tracking Control for a Class of Uncertain Nonlinear Pure-Feedback Systems by Cheng He, Jian Wu, Jiyang Dai, Zhe Zhang, Libin Xu, Pinwei Li

“…Radial basis function neural networks are introduced to approximate unknown functions for solving the fixed-time control problem of unknown nonlinear pure-feedback systems, and the mean value theorem is used to solve the problem of nonaffine structure in nonlinear pure-feedback systems. …”
Get full text