The rise of the smart grid, which applies Internet and metering technologies to power system, results in massive, heterogeneous data a large number attacks on grid causes great threats confidentiality integrity data. At same time, with development quantum information, it is possible use cryptography protect transmission. Aiming at problem security transmission this paper proposes lightweight scheme for security. In scheme, we combine "one-time pad" mechanism, random generator compensates...

Abstract To optimize the grid fluctuation and safety issues caused by high penetration charging of electric vehicles, a novel distribution network capacity planning model is proposed. This fused traffic-coupled dual-layer control strategy for scheduling, optimizing power balance during peak electricity usage station energy storage issues. Then, stable efficient supply system established. Experimental results demonstrate that our achieves comprehensive efficiency 84.19%, with loads controlled...

In this paper, the Cauchy problem of inhomogeneous Helmholtz equation is investigated. This ill-posed and truncation method used to solve inverse problem. Under a priori posteriori parameter choice rules, error estimates between regularization solution exact obtained, respectively. Numerical examples show that works effectively.

Abstract In this paper, we deal with the inverse problem of identifying unknown source time-fractional diffusion equation on a columnar symmetric domain. This is ill-posed. Firstly, establish conditional stability for problem. Then regularization solution obtained by using Tikhonov method and error estimates are derived under priori posteriori choice rules parameter. Three numerical examples presented to illustrate validity effectiveness our method.

An improved active disturbance rejection control (I-ADRC) to improve the attenuation of a permanent magnet synchronous motor speed controller was proposed in this paper. A nonlinear function with smoothness adopted design controller. The Lyapunov stability tracking differentiator, extended state observer, and were analysed. Moreover, simulations experiments confirmed effectiveness results demonstrate that has smaller steady-state error stronger ability than proportional integral derivative (PID)

In order to improve the response speed and disturbance rejection ability of a permanent magnet synchronous motor (PMSM) in an electromechanical actuator (EMA), compound sliding mode control (CSMC) is proposed. The CSMC consists controller with new reaching law observer based on symmetric S-type function. stability analyzed using Lyapunov analysis. effectiveness confirmed by Simulink simulation, experiments were conducted semi-physical platform. results obtained comparing proportional...

The recursive filtering problem for a class of time-varying systems with mixed time-delays subject to stochastic communication protocol and dynamic quantization effects is discussed in this article. It assumed that only one sensor can transmit the measured information filter at each sampling period, selected determined by scheduling strategy protocol. Based on assumption, upper bound error covariance derived an underlying solving two Riccati difference equations period. Then, trace minimized...

The asynchronous filtering problem for two-dimensional (2D) Markovian jump systems (MJSs) under hybrid cyber attacks and stochastic communication protocol (SCP) is the focus of this investigation. To avoid data transmission collisions, only a single sensor can send measurement through network at each sample shift moment, chosen decided by SCP mechanism. Besides, impact on performance also considered. In background SCP, an augmented model 2D MJSs constructed. Then, novel filter structure...

Abstract The problem of recursive set‐membership filter design for two‐dimensional (2‐D) systems subject to FlexRay communication protocol and hybrid cyber attacks (HCAs) is investigated in this article. that integrates time‐triggered event‐triggered mechanisms involves a series pre‐defined cycles based on bidirectional metrics developed alleviate the network bandwidth load. Furthermore, envisioned system exposed false data injection denial‐of‐service occur randomized manner. Subsequently,...

In order to meet the requirements of traffic data fusion for real-time urban state estimation, a new kind structure model is proposed. This consists both spatial and temporal fusion. First we use power average operator as method. Then propose correlation based compression (TCDC) algorithm, on segment linear regression (SLR) algorithm. Extensive simulation results demonstrate effectiveness correctness TCDC well TCDC's advantage over SLR overall performance.

Inverters paralleled in microgrid have various forms. Back to back converters due its isolation characteristics of frequency and fault been widely researched. This paper designs a control strategy for the converters, which includes inverter connected utility (VSC1) (VSC2) respectively. So VSCI can only exchange active power with public grid VSC2 realizes amplitude secondary modulation. Bidirectional flow between is realized by maintaining DC bus voltage constant. The not increase connection...

At present, in the process of opening and closing curtains, because people interior time is limited, can not be timely effective control curtains according to room outside light intensity indoor temperature, thus resulting best effect get problem, so put forward a kind automatic system STM32 based on curtains. The comprises temperature sensor module, clock motor liquid crystal display module manual module. After actual test, simple convenient, carry mode open close curtain, meet needs, wide...

This paper is concerned with the dynamic output feedback control issue for a class of networked systems medium access constraints, network-induced delays and packet dropouts. It assumed that constraints at both sides controller obey Markov distribution, upper bound less than one sampling period, dropouts channels can be described by i.i.d Bernoulli distribution processes. Then, are modelled as asynchronous systems. According to Lyapunov stability theory switching system theory, designed...

The current airline baggage handling is mainly by manual, which exist serious problems such as crucial handling, loss, low efficiency, high human labor cost, and so on. To solve these problems, an automatic process more needed within airport operation. this end, high-accuracy classification high-precision measurement of are essential. In paper, three works reported: a recognition method based on Convolutional Neural Network (CNN) model, algorithm using combination two-dimensional(2D) image...

This paper is concerned with the set-membership filtering problem for two-dimensional shift-varying systems subject to stochastic communication protocol and uniform quantization effects. To prevent data transmission from collisions, only one sensor can transmit measured information filter at each sampling shift instant, selected determined by scheduling strategy of protocol. On contrary, mechanism has been employed mitigate influence error on performance. Incorporating mechanism, this...

In the new education and technology era, there are many challenges in enhancing effectiveness of teaching learning process for traditional engineering field welding. Innovative educational methods welding teaching, training research proposed order to provide high quality with improved efficiency minimal cost. Integrated effective combination multimedia computer simulation distance is investigated. The great advantage virtual analyzed. that encourages students’ creative thinking innovative...

This paper is concerned with the synchronization control problem for discrete-time complex cyber-physical networks mixed delays and false data injection attacks. The polytopic model of closed-loop error dynamics established by considering pattern characteristics attacks input delays, which has essentially different from traditional handling method. More specifically, proposed utilizes current state dynamics, thereby facilitating reduction possible conservatism. In such a framework, nonlinear...

Abstract In the data-center-platform, all data is open to outside world in form of microservices. Due lack proper management, it difficult find source problem from intricate service call network when has a problem, thus missing golden opportunity for stop loss. addition, if an interface suddenly increases time, no longer necessary query time-consuming situation by service, and performance bottleneck cannot be visually analyzed. order solve these problems, we propose evaluation scheme...

Based on the rolling horizon optimization strategy, networked robust predictive control with medium access constraints and packet loss is studied. Firstly, considering influence of network factors such as loss, Markov jump rule Bernoulli independent identically distributed process are used to transform problem into system. According established system model stability analysis, a controller for systems designed by using linear matrix inequality (LMI) method, which makes asymptotically stable....