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...

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 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...

ABSTRACT This paper tackles the challenge of designing a memory‐dynamic event‐triggered output feedback controller for cyber‐physical systems (CPSs) under distributed denial service (DDoS) attacks. First, we consider impact hybrid time delays on communication networks and focus DDoS attacks that can continuously paralyze network. Second, with limited bandwidth resources, scheme (MDETS) efficiently utilizes resources as well mitigates network‐induced phenomena is proposed. In addition, to...

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...

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, observed-based discrete proportion-integration-differentiation (PID) control for multi-area interconnected power systems is addressed under hybrid attacks. Firstly, a reconstructed jump model proposed by taking the circumstance of data packet loss into consideration, which caused stochastic transmission delay sampled data. Then, different from traditional continuous-type PID control, an observer-based discrete-type strategy designed discrete-time system. Besides, due to may...

This paper investigates the dual-channel event-triggered quantitative load frequency control for discrete-time micro-grid system via a delay-square-dependent Lyapunov-Krasovskii functional approach. Firstly, novel dynamic quantified strategy has been proposed to enhance time-delay tolerance and utilization of communication resources. Secondly, incorporates square delay is introduced fully deploy desired information about system. Thirdly, improved stability criteria with strict dissipative...

In this paper, the asymptotic stability problem of neural networks with time-varying delays is investigated. First, a new sufficient and necessary condition on general polynomial inequality was developed. Then, novel augmented Lyapunov–Krasovskii functional (LKF) constructed, which efficiently introduces some terms related to previous information neuron activation function. Furthermore, based suitable LKF stated negative polynomial, two criteria less conservatism were derived in form linear...

The growing number of distributed generations (DGs) has shifted the power supply to be more flexible and reliable. Meanwhile, for stability grid, increasing integration demands a robust fault ride-through (FRT) ability when unbalanced sag occurs in grid operation, namely low-voltage (LVRT). During an sag, oscillation active reactive power, distorted current are main significant detriments. Several reference strategies have been developed mitigate these adverse effects. However, standard...

The air compressor system is a time-varying, delay and nonlinear complex system, it has very important sense to ensure that the supply pressure stable in control system. According working characteristic of fuzzy theory, as one modern theories, was applied into constant design controller. simulation results show controller more convenient effective; certain directive significance reference for other parameter’s

In order to stabilize a multi-time-delay interconnected wind power system, dual-channel dynamic event-triggered load frequency control scheme is proposed, considering network attacks in this paper. Firstly, paper designs of system incorporating the effect time-varying delay both states and input. Secondly, reduce occupancy communication bandwidth, novel transmission with two asynchronous event triggers channels has been designed. Further, malicious bounded time-delay deception attack model...

Heat-treatment was emphasized for its important role to qualify the products of heavy rail, and induction quenching one widely used heating process methods. The temperature field U71Mn rail during various kinds factors that may influence be distributed were simulated by FEM software. result shows main way how long keeping warm time were, value pressure wind when cooing steel, difference which would directly results heat treatment rail. It is significantly valuable choice relevant parameters

The paper focuses on the asymptotical stabilization of switched uncertain systems subject to actuator saturation. First, saturation part system is dealt with by a new proposed method. Then, based Multi-Lyapunov function method, sufficient condition for stability got. expressed in form LMI, so easily solved. Further, controller designed.

The consensus issue for the nonlinear multiagent systems (MASs) with transmission delays subjected to deception attacks is addressed based on sampled-data control. Due universality of cyber attacks, this paper considers a kind which occur randomly at sampling instant and can modify communication information. By employing two-sided looped-functional method, an augmented Lyapunov-Krasovskii functional (LKF) constructed fully utilize information interval, makes some free matrices be not...

Physical vapor deposition (PVD) has been an important method to synthesize metallic nanorods during the past two decades. Based on main physical process of crystal growth, this letter made a growth model with kinetic lattice Monte Carlo (KLMC) and studied effects three-dimensional (3D) Ehrlich–Schwoebel (ES) barrier growth. According simulation results, large 3D ES affects surface morphology apparently. With analyze promotes step formation increases height greatly, it is factor formation.

Download This Paper Open PDF in Browser Add to My Library Share: Permalink Using these links will ensure access this page indefinitely Copy URL Simultaneous Improvement of Strength, Ductility and Damping Capacity Single Β-Phase Mg-Li-Al-Zn Alloys 22 Pages Posted: 9 Nov 2022 See all articles by Xinhe YangXinhe YangHarbin Engineering UniversityYang JinHarbin UniversityRuizhi WuHarbin University - Key Laboratory Superlight Materials & Surface TechnologyJiahao WangNanchang Hangkong UniversityDan...