The precise temperature distribution measurement is crucial in many industrial fields, where ultrasonic tomography (UT) has broad application prospects and significance. In order to improve the resolution of reconstructed images maintain high accuracy, a novel two-step reconstruction method proposed this article. First, problem solving converted an optimization then solved by improved version equilibrium optimizer (IEO), which new nonlinear time strategy population update rules are deployed....

Summary This article investigates exponential synchronization for complex dynamical networks (CDNs) with nonfragile sampled‐data feedback control. An important yet challenging problem that contains the time delays of controller, uncertainties occurrence and randomness controller gain fluctuation due to packet loss, during data transmission is be solved. A novel Lyapunov‐Krasovskii functional (LKF) allows more free matrix terms slacks certain one nonpositive definite first constructed based...

State-of-health (SOH) estimation is critical for the battery management system. With autonomous ability and superior nonlinear mapping capability, machine learning now a hot topic in this field. The training sample set of current methods based on single learner often regional data, which leads to small range data acquisition affects generalization model. Regard issue, idea ensemble considered, by generating differential samples synthesizing output series base learners, good performance can...

In this article, a new event-triggered <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$H_{\infty }$ </tex-math></inline-formula> load frequency control (LFC) approach with dynamic triggered algorithm (DTA) for multi-area nonlinear power systems (NPSs) based on non-fragile proportional integral (NPI-control) strategy is addressed. Firstly, different from the existing linear single-area LFC model systems, an...

This brief addresses the co-design problem of adaptive memory event-triggered mechanism (AMETM) and aperiodic intermittent controller (AIC) for nonlinear networked control systems. To improve utilization efficiency network resources,an AMETM with non-periodic waiting time is proposed, in which Zeno behaviour excluded. Meanwhile, an event-dependent AIC matching proposed designed to save more resources cost. Furthermore, exponential stability criterion established form linear matrix...

In this article, a novel co- design approach of observed-based fault detection filter (FDF) and dynamic event-triggered controller is proposed for multi-area wind power system under dual alterable aperiodic (DAA) denial-of-service (DoS) attacks. It the first attempt to an FDF considering actuator signal. And tolerable threshold function constructed warn occurrence Then, bandwidth limitation network communication, scheme decrease occupation communication channel. Furthermore, DAA DoS attacks...

In this article, we focus on the event-triggered observer-based fuzzy positioning control and <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$L_{2}$</tex-math></inline-formula> -gain analysis of nonlinear unmanned marine vehicle (UMV) systems in network environments, which is subject to a hybrid attack consisting denial-of-service deception attack. First, based Tagaki-Sugeno modeling method, unified...

In this work, a novel dynamic-memory event-triggered H∞ load frequency control (LFC) approach for the power system is proposed considering existence of hybrid attacks. A mechanism (DMETM) first presented under denial-of-service (DoS) attacks to reduce occupation network communication bandwidth. Different from existing mechanisms (ETMs), superiority DMETM that not only past transmitted packets can be utilized but also amount adjusted according state error system. Then, general LFC model...

A distributed coordination load frequency control (LFC) approach is proposed for interconnected power systems, and a detection compensation mechanism targeting denial-of-service (DoS) attacks designed in this work. Firstly, different from traditional LFC, hybrid-type strategy proposed, which takes full advantage of local information information. Then, discovering DoS timely, feasible algorithm presented. Furthermore, order to weaken the harm cyber attacks, triggered-type data proposed. By...

This article investigates the stability and stabilization problem for delay-dependent Takagi–Sugeno (T–S) fuzzy load-frequency control (LFC) power system with energy storage (ESS). First, a unified T–S LFC model is constructed ESS by further analyzing nonlinear characteristics existing in turbine governor dynamics. Second, proportional-integral strategy proposed to stabilize system. Then, based on approaches handle quadratic function respect time-varying delay, an improved...

In this article, the consensus problem of nonlinear multiagent systems (MASs) with time-varying communication delays (TVCDs) is addressed by proposing a novel nonfragile memory-based sampled-data control approach. Different from existing schemes, an improved proportional derivative like scheme based on information neighbors proposed. Besides, considering inaccuracy and perturbation controller, method also adopted to design controller. Then, instead general quadratic type Lyapunov–Krasovskii...

Abstract This paper focuses on the consensus issue of nonlinear multiagent systems (MASs) with intrinsic time‐varying delays via nonfragile and aperiodic memory sampled‐data control scheme. An improved continuous Lyapunov–Krasovskii functional (LKF) some two‐sided looped‐functional terms is introduced, in which several free‐weighting‐matrices are not necessarily positive definite. Furthermore, based property Laplacian matrix, original MASs can be investigated directly without transforming...