The free-weighting matrix and integral-inequality methods are widely used to derive delay-dependent criteria for the stability analysis of time-varying-delay systems because they avoid both use a model transformation technique bounding cross terms. This technical note presents new integral inequality, called free-matrix-based that further reduces conservativeness in those methods. It includes well-known inequalities as special cases. Using it investigate with time-varying delays yields less...

This note concerns the problem of robust stability a linear system with time-varying delay and polytopic-type uncertainties. In order to construct parameter-dependent Lyapunov functional for system, we first devised new method dealing time-delay without this method, derivative terms state, which is in functional, are retained some free weighting matrices used express relationships among variables, Leibniz-Newton formula. As result, not involved any product functional. then easily extended...

This paper presents a new method of improving the disturbance-rejection performance servo system based on estimation an equivalent input disturbance (EID). First, concept EID is defined. Next, configuration improved employing disturbance-estimation described. Then, designing control law estimate explained. Finally, speed rotational used to demonstrate validity method, and some design guidelines are presented.

This note concerns delay-dependent robust stability criteria and a design method for stabilizing neutral systems with time-varying structured uncertainties. A new way of deriving such is presented that combines the parameterized model transformation takes relationships between terms in Leibniz-Newton formula into account. The are expressed as free weighting matrices obtained by solving linear matrix inequalities. Moreover, also used to state-feedback controller. Numerical examples illustrate...

<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> This study employs the free-weighting matrix approach to investigate output feedback control of a linear discrete-time system with an interval time-varying delay. First, delay-dependent stability is analyzed using new method estimating upper bound on difference Lyapunov function without ignoring any terms; and based results, design criterion for static (SOF) controller derived. Since conditions...

The vision of the upcoming 6G technologies that have fast data rate, low latency, and ultra-dense network, draws great attentions to Internet Vehicles (IoV) Vehicle-to-Everything (V2X) communication for intelligent transportation systems. There is an urgent need distributed machine learning techniques can take advantages massive interconnected networks with explosive amount heterogeneous generated at network edge. In this study, a two-layer federated model proposed end-edge-cloud...

Smart manufacturing aims to support highly customizable production processes. Therefore, the associated machine intelligence needs be quickly adaptable new products, processes, and applications with limited training data while preserving privacy. In this article, a federated transfer learning framework, for cross-domain prediction, is proposed address challenges of scarcity privacy faced by most approaches in modern smart applications. The framework architecture consists central server...

The proliferation of advanced embedded and communication technologies has facilitated the possibility modern Intelligent Transportation System (ITS). hierarchical nature such large-scale distributed systems brings obvious challenges in creating a scalable sustainable computing environment, hence development application edge intelligence become critical. Federated learning (FL), as an emerging machine paradigm, aims to offer secure knowledge sharing effective across multiple devices. However,...

This paper deals with the high-precision positioning control of a dual-stage feed drive. The design system is based on equivalent input-disturbance (EID) approach to improve disturbance rejection performance. An analysis EID reveals mechanism rejection. procedure illustrated by numerical example. Simulation results show that not only rejects disturbances, but also suppresses uncertainties and nonlinearities in plant. Design simulation for example are employed compare our method observer...

In this brief, free-weighting matrices are employed to express the relationship between terms in Leibniz-Newton formula; and based on that relationship, a new delay-dependent exponential-stability criterion is derived for delayed neural networks with time-varying delay. Two numerical examples demonstrate improvement method provides over existing ones.

This letter proposes a two-layer active disturbance rejection control (ADRC) method with the compensation of estimated equivalent input disturbances (EID) for load frequency (LFC) multi-area interconnected power system. has capability rejecting effects random variations and parameter uncertainties, guaranteeing high dynamic performance. The state-space model LFC system is established. Then full-order generalized state observer (GSO) employed in ADRC to estimate EID. A stability condition...

An improved equivalent-input-disturbance (EID) approach is devised to enhance the disturbance-rejection performance for a strictly proper plant with state delay in modified repetitive-control system. A gain factor introduced construct an EID estimator. This increases flexibility of system design and enables adjustment dynamical disturbance rejection. Moreover, commutative condition, which widely used conventional estimator, avoided. Thus, it reduces conservativeness by removing constraints...

Wireless sensor networks (WSNs) are usually deployed in the target area to carry out detecting or monitoring tasks. Sweep coverage is an important concern of WSNs that more targets can be monitored with fewer mobile nodes. With rapid development unmanned aerial vehicle (UAV) technology, UAV has been increasingly used military and civil fields. UAVs regarded as nodes perform specific Due limited battery lifetime flight mission, it difficult achieve full all a large-scale scenario. In this...

This paper presents an improved equivalent input disturbance (EID) approach to deal with exogenous disturbances and system nonlinearities. The nonlinearities are regarded as a lumped on the control channel. EID approach, which has state observer estimator, is used estimate disturbance. There constraint between estimator design of for conventional approach. A stable zero was added remove improve stability in this paper. ensures that can be designed independently. An analysis explains...

This article presents a new method that employs the active disturbance rejection control (ADRC) paradigm to handle problem for class of nonlinear systems with unknown disturbances and measurement noise. An improved extended state observer (ESO) is devised separate estimation from reconstruction parameter used adjust disturbance-rejection performance independently. increases flexibility system design makes gain ESO (IESO) small compared conventional in ADRC. A low-pass filter added IESO....