Quadrotor stabilizing controllers often require careful, model-specific tuning for safe operation. We use reinforcement learning to train policies in simulation that transfer remarkably well multiple different physical quadrotors. Our are low-level, i.e., we map the rotorcrafts' state directly motor outputs. The trained control very robust external disturbances and can withstand harsh initial conditions such as throws. show how training methodologies (change of cost function, modeling noise,...

Based on the distributed event-triggered impulsive mechanism, leader-following mean-square consensus of stochastic multiagent systems with randomly occurring uncertainties and nonlinearities is investigated for first time in this article. In order to make better use limited communication resources, we proposed some novel rules among agents corresponding control protocol. Moreover, new triggering functions are designed different types agents, which cannot only ensure that Zeno behavior can be...

Given their flexible mobility, rapid deployment capabilities, and cost-effectiveness, unmanned aerial vehicles (UAVs) have recently emerged as a viable solution for providing computational services to distributed devices in the absence of terrestrial infrastructure. However, vulnerability UAV hardware make them susceptible failures caused by environmental factors operational stresses, which would directly affect communication these ground users. Therefore, mitigate potential failures, it is...

Abstract This work is concerned with the finite‐time consensus of leader‐following non‐linear multi‐agent systems by means distributed event‐triggered impulsive control. The protocol first put forward based on strategies, where instants are determined proposed condition. For condition, it not only determines but also effects update time Moreover, compared existing controllers, controller designed in this does contain any sign function, thereby overcoming chattering phenomenon. In addition,...

Many mobile applications utilize hardware accelerators for computation-intensive tasks. Often these tasks involve real-time user interactions and must finish within a certain amount of time smooth experience. In this paper, we propose DVFS framework involving interactions. The automatically generates predictor each accelerator that predicts its execution time, sets level to just meet the response requirement. Our evaluation results show, compared running at constant frequency, our achieves...

In this paper, the system performance of VoIP on HSUPA, which is investigated by semi-analytical prediction and level simulations, was studied presented. The results show capacity gain over HSUPA than 12.2kbps DCH in Rel'99. Further, aforementioned shows consistency with simulation principle. Otherwise, uplink non-scheduled algorithm mainly dependent delay budget availability UE power, indicated results. HARQ soft handover can be expected to lower required power thus increase capacity. Due...

In this paper, the system level optimization of voice over IP transmission in HSUPA system, configured with a 10 ms TTI length, is analyzed. The study considers release 7 improvements to HSUPA, terms DPCCH gating concept. A dynamic activated MAC layer bundling two VoIP packets single frame proposed and compared against packet per by means quasi-static simulations.

This paper discusses the finite-time and fixed-time consensus of nonlinear stochastic multi-agent systems (NSMSs) with randomly occurring uncertainties (ROUs) nonlinearities (RONs) in a leader-following framework. Nonlinear control impulsive pinning protocols are designed to guarantee that follower agents realize leader agent finite time(fixed time). Based on theory, analysis technique, comparison system theory algebra graph some sufficient conditions proposed systems. Then, setting times...

In this paper, we investigate the finite-time synchronization problem for a class of Markovian jumping complex networks (MJCNs) with non-identical nodes and impulsive effects. Sufficient conditions MJCNs are presented based on an M-matrix technique, Lyapunov function method, stochastic analysis suitable comparison systems to guarantee synchronization. At last, numerical examples exploited illustrate our theoretical results, they testify effectiveness results dynamic systems.

This paper mainly tends to investigate finite-time stability and stabilization of impulsive stochastic delayed neural networks with randomly occurring uncertainties (ROUs) nonlinearities (RONs). Firstly, by constructing the proper Lyapunov-Krasovskii functional employing average interval method, several novel criteria for ensuring are obtained means linear matrix inequalities (LMIs). Then, some conditions about state feedback controller derived ensure ROUs RONs. Finally, numerical examples...

The consensus problem is studied in this paper for a class of hybrid switched multi-agent systems (HSMASs) consisted continuous-time (CT) and discrete-time (DT) subsystems via impulsive control. Due to the complex dynamic characteristics system, how deal with connection between at each switching instant one confronted difficulties. Based on Lyapunov theory, some sufficient criteria are derived under arbitrary signals, we show that HSMASs can be achieved undirected, directed, connected...

This paper is devoted to the problem on finite-time stabilization (FS) of stochastic neural networks (SNNs) with time-varying delay (TVD) via impulsive control. By structuring proper Lyapunov-Krasovskii functional and help average interval method (AII), some sufficient conditions ensure FS SNNs TVD are derived in term LMIs. Compared sequence uniform distribution, our results more suitable for practicalities. Finally, numerical simulations shown verify effectiveness results.

The removal of heavy metal ions(HMI) contained in the electroplating wastewater by precipitation flotation was studied. Experimental results show that chromium, copper, nickel and other metals can be removed efficiently, all water quality indexes were up to first grade discharge standard (GB21900-2008) when dosage Na <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> S (C xmlns:xlink="http://www.w3.org/1999/xlink">Na2S</sub> :C...

Abstract In order to improve the universality of product family platform, from perspective extension innovation method, architecture composed demand domain, functional technology domain and physical was studied. Based on methods, a service system centered development platform established. The basic-element logic language method design is employed analyze characteristics including generalization, parameterization, modularization, intelligence. built through three aspects: formal modeled basic...

This paper discusses the effects of IP RAN to handover, which is key functionality radio resource management (RRM), demonstrate advantages RAN. It takes Nokia's PORAN scheme as an example do discussion. Through analysis on soft/softer handover and CRRM (common management) in inter-system we significance its many advantages. We more believe that will be step for evolution future end-to-end all-IP network.

In this paper the reverberation chamber is treated as a measurement system. Repeatability and reproducibility elements of system are mainly analyzed with multiple factors analysis variance. The number operators, locations repetitions considered residual charts applied used to verify fitness model. Finally, all R&R% less than 10%, which demonstrates that performance excellent.

In this paper, we study the impact of code utilization in HSDPA on system performance both a qualitative and quantitative level. The extent improvement, which can be achieved by reserving more codes for HSDPA, dependent traffic load, channel conditions, scenarios, packet scheduling algorithms, etc. Furthermore, draw some conclusions about network planning optimization optimum utilization.

Liquid crystal polymer (LCP) high-speed films are widely used in the fields of 5G antennas and high-frequency devices. Multi-layer LCP circuit lamination pre-treatment process will bite circuit, resulting increased surface roughness. Due to skin effect, insertion loss multilayer also increases, thereby affecting signal integrity. The effect pre-processing technology on performance circuits is studied. We found that browning has a greater impact

Spectrum sensing is studied for multi-user cognitive radio networks in this paper. An improved spectrum method -- energy-cooperative detection developed, which combines the double threshold energy detecting with OR fusion decision rule. The simulation done both AWGN channel and Rayleigh channel, advantages of are verified.

Based on the fabric tensor theory and principle of least square method, method block processing in same model to explore variation passive earth pressure transversely isotropic soil was used study. At time, primary displacement application multiple were applied change angle between large principal stress direction filling normal deposition surface obtain new strength parameters ci φi each after divided additionally analyzing anisotropic pressure. The study shows: 1.Considering transverse...