Results 11 to 20 of about 3,334 (209)

Fault Identification in Electric Servo Actuators of Robot Manipulators Described by Nonstationary Nonlinear Dynamic Models Using Sliding Mode Observers

Sensors, 2022
The problem of fault identification in electric servo actuators of robot manipulators described by nonstationary nonlinear dynamic models under disturbances is considered. To solve the problem, sliding mode observers are used.
Alexander Zuev, Alexey N. Zhirabok, Vladimir Filaretov, Alexander Protsenko   +3 more
doaj   +3 more sources

ALGORITHM OF DETERMINATION OF NON-STATIONARY NONLINEAR SYSTEMS FULL STABILITY AREAS

Российский технологический журнал, 2017
The paper proposes a numerical algorithm for constructing piecewise linear Lyapunov functions for investigating the absolute stability of nonlinear nonstationary systems.
V. P. Berdnikov
doaj   +1 more source

Impulse Response Functions for Nonlinear, Nonstationary, and Heterogeneous Systems, Estimated by Deconvolution and Demixing of Noisy Time Series

Sensors, 2022
Impulse response functions (IRFs) are useful for characterizing systems’ dynamic behavior and gaining insight into their underlying processes, based on sensor data streams of their inputs and outputs.
James W. Kirchner
doaj   +1 more source

A Hybrid Nonlinear Combination System for Monthly Wind Speed Forecasting

IEEE Access, 2020
Wind speed is one of the primary renewable sources for clean power. However, it is intermittent, presents nonlinear patterns, and has nonstationary behavior.
Paulo S. G. de Mattos Neto, Joao Fausto Lorenzato de Oliveira, Domingos Savio de Oliveira Santos Junior, Hugo Valadares Siqueira, Manoel Henrique Da Nobrega Marinho, Francisco Madeiro   +5 more
doaj   +1 more source

Selective ensemble of multiple local model learning for nonlinear and nonstationary systems [PDF]

Neurocomputing, 2020
Abstract This paper proposes a selective ensemble of multiple local model learning for modeling and identification of nonlinear and nonstationary systems, in which the set of local linear models are self adapted to capture the newly emerging process characteristics and the prediction of the process output is also self adapted based on an optimally ...
Tong Liu 0014, Sheng Chen 0001, Shan Liang, Chris J. Harris   +3 more
openaire   +4 more sources

ROBUST STABILITY AND SYNTHESIS OF DISCRETE CONTROL SYSTEMS FOR NONLINEAR OBJECTS

Міжнародний науково-технічний журнал "Проблеми керування та інформатики", 2007
We obtain the sufficient verifiable conditions of the robust stability in a domain for nonlinear nonstationary discrete systems with uncertain set-valued parameters.
V.M. Kuntsevich
doaj   +1 more source

A Compact and Fast Single‐Spike TTFS Encoder With Ultralow Operating Voltage for Efficient Neuromorphic Fourier Transform [PDF]

Advanced science
A Pt/TaOx/V single‐spike TTFS encoder achieves ultralow‐voltage (∼0.35 V), high‐speed (∼100 ns) operation with simplified circuitry. Integrating bipolar nonuniform temporal encoding with a spiking‐DFT neuron model enables a neuromorphic FFT framework. Device‐calibrated simulations demonstrate high spectral fidelity across multitone, speech, and chirp ...
Wu Y, Wei Q, Zhang J, Su L, Mao N, Huang B, Chen J, Huang D, Feng S, Zhang Y, Zhong S.   +10 more
europepmc   +2 more sources

A Time Series Decomposition and Reinforcement Learning Ensemble Method for Short-Term Passenger Flow Prediction in Urban Rail Transit

Urban Rail Transit, 2023
Short-term passenger flow prediction (STPFP) helps ease traffic congestion and optimize the allocation of rail transit resources. However, the nonlinear and nonstationary nature of passenger flow time series challenges STPFP.
Jinxin Wu, Deqiang He, Xianwang Li, Suiqiu He, Qin Li, Chonghui Ren   +5 more
doaj   +1 more source

MODIFIED ALGORITHM FOR DETERMINATION OF FULL STABILITY AREAS IN NONSTATIONARY NONLINEAR SYSTEMS

Российский технологический журнал, 2018
The paper proposes a numerical algorithm for constructing Lyapunov spline functions for investigating the absolute stability of nonlinear nonstationary systems.
V. P. Berdnikov
doaj   +1 more source

Higher-Order Multifractal Detrended Partial Cross-Correlation Analysis for the Correlation Estimator

Complexity, 2020
In this paper, we develop a new method to measure the nonlinear interactions between nonstationary time series based on the detrended cross-correlation coefficient analysis.
Keqiang Dong, Xiaojie Gao
doaj   +1 more source