The leader–follower adaptive consensus control problem is addressed for partial differential equations (PDEs) multiagent systems (MASs), and these agents are composed of flexible manipulator with input nonlinearity, boundary uncertainties, time-varying disturbances. Because the spatial variables in model, design protocols more difficult than that ordinary equation (ODE) MASs. By designing Lyapunov function, a novel distributed (BC) protocol constructed, which not only ensures angular...

This article mainly investigates the problem of vibration suppression and angle cooperative tracking control a multiple flexible manipulators described by partial differential equations (PDEs) with input quantization, actuator failures, unmodeled system dynamics. An intermediate law is designed, smooth function positive integrable time-varying introduced. Besides, new constructed in to handle influence quantization faults. Under designed controller, angles all can reach consensus through...

The adaptive boundary vibration control and leader–follower angle tracking consensus problem of networked flexible Timoshenko manipulator systems in the case parametric uncertainties external disturbances are investigated. To mitigate impacts parameter uncertainties, we employ tuning techniques to design some suitable terms. Then with network topology is connected, propose novel distributed continuous-time algorithms. Based on a combination Lyapunov-based Barbalat's lemma, asymptotic...

Distributed Denial of Service (DDoS) attack, which seriously affects the availability Internet, is one most dangerous network attacks. Machine learning widely used in DDoS attack detection. However, due to data privacy and transmission overhead problems, traffic distributed on different devices will not be easily concentrated together, leads difficulties model training. In this paper, we combine federated (FL) neural propose a FLDDoS system counter We designed CNN preprocessing algorithm...

This article investigates distributed adaptive fuzzy-based boundary vibration control and cooperative tracking for a directed flexible Timoshenko manipulator network with process actuator faults, disturbances, modeling uncertainties. In design, fuzzy logic systems are adopted to estimate the fault functions, method is used compensate effects of gain failures, Then, by utilizing combination consensus control, integral some novel fault-tolerant controllers provided ensure asymptotic...

Eight percent (mole fraction) yttria-stabilized zirconia (8YSZ) electrolyte samples with thicknesses ranging from 150 µm to 1.2 mm were fabricated determine the relationship between thickness and electrical conductivity. In principle, this range can be considered an extension macro-scale micro-scale. X-ray diffraction (XRD), scanning electron microscopy (SEM), alternating current complex impedance used characterize samples. A nonlinear conductivity temperature was observed explained by...

Hydrogen embrittlement causes deterioration of materials used in metal–hydrogen systems. Alloying is a good option for overcoming this issue. In the present work, first-principles calculations were performed to systematically study effects adding Ni on stability, dissolution, trapping, and diffusion behaviour interstitial/vacancy H atoms pure V. The results lattice dynamics solution energy analyses showed that V–Ni solid solutions are dynamically thermodynamically stable, V can reduce...

In this paper, a three-band antenna with small size 50 × 15 0.8mm3 is developed. The multi-broadband consists of strip-1, strip-2, Br-1, Br-2 and S-strip. lengths strip-2 are close to λ/4 at 680MHz, 850MHz λ3/4 2.04GHz, 2.55GHz, respectively. S-strip λ 5.2GHz 3.7GHz. addition, two tuning stubs Br1 connected can further improve the impedance matching. Then six key resonances excited: 850MHz, 3.7GHz 5.2GHz. There exists electromagnetic coupling (EMC) among them. As result effect structure,...

Abstract Intrusion detection is a critical obstacle in the realm of security and data mining methodologies. Consequently, researchers have extensively investigated quest for swiftest most precise means identifying intrusions. Essentially, intrusion systems are tasked with recognizing any unauthorized activities, misuse, or harm inflicted upon system, be it by internal external users. Recently, order to design systems, artificial intelligence machine learning methods been used, each which has...

In this paper, a three-band antenna with small size 50×15×0.8 mm3 is developed. The multi-broadband consists of the strip-1, strip-2, Br-1, Br-2 and S-strip. lengths are close to λ/4 at 680MHz, 850MHz, λ3/4 2.04GHz, 2.55GMHz respectively. S-strip k 5.2GHZ 3.7 GHZ. addition, two tuning stubs Br-1 connected strip-2 can further improve impedance matching. Then six key resonances excited: 2.55GHz, 3.7GHz 5.2GHz. There exist electromagnetic coupling (EMC) among them, as result comprehensive...

The evaluation of the fault diagnosis capability a data center network (DCN) is important research in measuring reliability. g-extra diagnosability defined under condition that every component except vertex set contains at least g+1 vertices. t/k strategy number nodes does not exceed t, and all can be isolated into containing up to k fault-free nodes. As an network, BCube Connected Crossbars (BCCC) has many excellent properties have been widely studied. In this paper, we first determine...

With the large-scale utilization of clean energy such as wind energy, scale construction offshore farm (OWF) is gradually expanding. When a major blackout occurs in coastal local power grid, if black start (BS) capability OWF used to onshore thermal unit, process grid restoration can be accelerated. In order enable have BS capability, this paper uses small-capacity diesel generator supporting source turbines (OWTs), and step-up transformer high-voltage long submarine cable supply for...

ABSTRACT A planar triple‐band antenna with size 40 × 18 0.8 mm 3 for LTE/GSM/UMTS and WLAN/WiMAX is developed in this article. The constructed four steps. first step named Ant1. In one side of the substrate, a nonfolded strip connected ground plane rectangle patch at both end strip, respectively. Ant1 fed by T‐strip, which other substrate. generates two modes 2.8 1.97 GHz responsible operation band 1.25–3.65 GHz. second Ant2. On basis Ant1, changed into folded strip. Two new resonant 680 MHz...

Swing of pads on the tilting pad bearing increases DOF system. Pads and journal perturbation frequency has a great influence calculating dynamic coefficients. The currently research, effect shaft generally were not considered coefficients bearings. Frequency reduced dynamical model bearings was presented considering effects frequency, oil film matrix investigated in detail. FEM method used to solve with for bearing. numerical results indicate that direct stiffness reduce, while damping...

According to structure characteristics of tilting pad bearing and direct lubricating technology, a new three-pad Leading Edge Groove (LEG) bearings was developed. In order investigate performance the dynamic properties, A test rig developed 8 stiffness damping coefficients for bearing. The finite difference algorithm is adopted solve Frequency sweep excitation method used eight It verifies validity by comparison theoretical results. results show that have good characteristics.

Water-lubricated graphite bearing has gradually obtained the widespread application, with its high wear resistance, temperature resistance and self lubricating, This paper designed water-lubricated sliding performance testing platform studied factors that could affect friction rate vibration of bearing, such as load, speed running time. The final results show can basically meet requirements blower shaft system.

In order to elucidate the role of various ultrasonic effects on pH and conductivity K <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> HPO xmlns:xlink="http://www.w3.org/1999/xlink">4</sub> solution, dependencies both properties solution temperature which rises due thermo- effect are investigated. As is heated by conventional method, linear with reciprocal thermodynamic when irradiated ultrasound. Therefore, it reasonably thought that...