The frequency scarcity imposed by fast growing demand for mobile data service requires promising spectrum aggregation systems. so-called higher order statistics (HOS) of the channel capacity is a suitable metric on system performance. While prior relevant works have improved our knowledge HOS characterization systems, an analytical framework encompassing generalized fading models interest not yet available. In this paper, we pursue detailed analysis κ-μ and shadowed channels deriving novel...

The Lyapunov-Krasovskii functional (LKF) method is an effective tool to obtain delay-dependent stability criteria of time-varying delay systems. However, in the method, requirement that there must exist appropriate LKF for a system with varying interval too strict and may lead considerable conservativeness. In order get less conservative criteria, novel analysis called delay-mode-based (DMBLKF) first presented nonlinear Compared main advantage DMBLKF lies relaxing aforementioned leading...

An effective method for the damage detection of skeletal structures which combines cross correlation function amplitude (CCFA) with support vector machine (SVM) is presented in this paper. The proposed consists two stages. Firstly, data features are extracted from CCFA, which, calculated dynamic responses and as a representation modal shapes structure, changes when occurs on structure. then input into SVM one-against-one (OAO) algorithm to classify status simulation IASC-ASCE benchmark model...

Leader-Follower formation control of multi-robot was studied in this paper. A and obstacle avoidance method with based on the combination Closed-loop Artificial Potential Field presented. According to position information leader, introduced realize tracking follower achieved. The could be achieved by method, robots can pass area smoothly. simulation result shows that proposed achieve expected effect, it solve kind problems effectively.

In this paper, the stability problem of delayed neural networks is investigated by adopting some switching methods. First, delay interval divided into many smaller variable intervals, and when regarded as a mode delay, are modeled switched systems. Then, using methods, less conservative criteria derived to ensure networks. Finally, one example provided show effectiveness obtained criteria.

Direct N,N-dialkylation of acyl hydrazide catalyzed by a series amidato iridium complexes bearing an electron-donating group in the ligand using methanol or ethanol as alkyl reagent under weak base conditions (10 mol % KHCO3) is described. A wide range derivatives are converted to corresponding N,N-dialkylated products excellent yields (38 examples, ≤96%). On basis control experiments and nuclear magnetic resonance studies, plausible mechanism was proposed. The experimental results indicate...

Low-illumination image enhancement (LIIE) in confined spaces is a challenge faced industrial inspection and diagnostics areas. Most existing methods cannot handle extremely dark images captured spaces. This article reports residual deep curve estimation network (ResZero) to enhance such for foreign object detection (FOD). To reduce information loss when enhancing images, residuals are added the backbone of proposed ResZero pass forward features middle layers. solve noise color cast problems...

Abstract Exponential stability analysis of discrete‐time nonlinear systems with a time‐varying delay is concerned in this article. The main contribution article lies proposing an improved method called delay‐mode‐based functional method. presented by weakening condition the Lyapunov–Krasovskii With help new method, less conservative exponential criteria linear are obtained and two classical examples given to show that effective.

Aiming at the problem of rotor inertia uncertainty and load torque disturbance permanent magnet synchronous motor control system, this article proposes an adaptive backstepping speed strategy for based on parameter identification. First, online identification method observer is designed. Furthermore, to solve external disturbance, combined with identified inertia, law are designed according Lyapunov’s stability theorem, in which derivation virtual calculated by dynamic surface control....

A dynamic lane-use assignment model at signalized intersection under tidal flow is established in this paper. By solving the model, an optimal solution for and signal phase can be obtained determinations made whether reversible lanes need to set up or how many up. In order verify validity of simulation software used. The results show that effectively improve utilization ratio time-space resources intersection.

To solve the shortcomings of existing control methods for an electromagnetic direct drive vehicle robot driver, including large speed tracking error and mileage deviation, a new adaptive method driver based on fuzzy logic is proposed in this paper. The adapts linear motor as its mechanism. system structure designed. coordinated controller multiple manipulators presented. Moreover, to achieve accurate desired speed. Experiments are conducted using Ford FOCUS car. Performances method,...

Abstract This paper investigates the exponential stability problem for a class of multi‐area power systems with time delays under load frequency controller failures (LFCFs). For describing phenomenon LFCFs, considered system is rewritten as switched multiple delays. By adopting switching technique, conditions are developed when failure and unavailability ratio restricted. Finally, one example given to show applicability proposed method.