Serwis Infona wykorzystuje pliki cookies (ciasteczka). Są to wartości tekstowe, zapamiętywane przez przeglądarkę na urządzeniu użytkownika. Nasz serwis ma dostęp do tych wartości oraz wykorzystuje je do zapamiętania danych dotyczących użytkownika, takich jak np. ustawienia (typu widok ekranu, wybór języka interfejsu), zapamiętanie zalogowania. Korzystanie z serwisu Infona oznacza zgodę na zapis informacji i ich wykorzystanie dla celów korzytania z serwisu. Więcej informacji można znaleźć w Polityce prywatności oraz Regulaminie serwisu. Zamknięcie tego okienka potwierdza zapoznanie się z informacją o plikach cookies, akceptację polityki prywatności i regulaminu oraz sposobu wykorzystywania plików cookies w serwisie. Możesz zmienić ustawienia obsługi cookies w swojej przeglądarce.
An adaptive output feedback dynamic surface control (DSC) scheme is proposed for a class of nonlinear systems with time-varying output constraint and input saturation. The unknown nonlinear continuous functions are approximated by radial basis function neural networks (RBFNNs). An asymmetric barrier Lyapunov function (ABLF) is employed to cope with time-varying output constraint and design the adaptive...
With the emerging vehicular network and the possible diverse applications, Intelligent Transportation Systems (ITS) have been evolving to Cooperative ITS (C-ITS, CITS) with connected intelligent vehicles, and the topics in this domain also raise more and more research interesting recently. However, subjecting to the immaturity of V2X communication technology and the deployment of intelligent vehicles...
To improve the jumping performance, this paper presents a locust-inspired jumping robot with initial body posture adjustment and self-righting mechanisms. A segmental gear, stretching and triggering the spring for storage and rapid release of energy, is used for the jumping mechanism. A pair of front legs driven by an additional motor is used for the initial body posture adjustment. Furthermore, a...
This paper is devoted to analyze system stability, based on a wheeled mobile health care robot. First, the center gravity (CG) projection method, energy stability margin (ESM) and zero moment point (ZMP) are used to quantify the static and dynamic stability. Then the stability is stimulated with Adams, and the upper accelerations which can stabilize the motion is thus obtained. Finally, validated...
According to the group, interactive and real-time characteristics of mobile social environment, a novel user behavior prediction algorithm in mobile social environment is proposed in this paper. In this algorithm, firstly, a coding based two-dimensional Apriori method is presented to analyze user service behaviors: on one hand, the correlation analysis of a user behavior history is performed; on the...
Based on the substrate integrated waveguide (SIW) technology, a two-layer slot array working at Ka band is designed by transferring the conventional waveguide resonant slot array antenna to the substrate integrated waveguide structure., which fed by standard metallic waveguide. The integration of the slotted-waveguide array with the feeding network is an important goal in the design process. Reduced...
Application scenarios constraints of most low bit rate compression schemes lead to audio signals of low bandwidth and, inevitable, of low perceptual audio quality. Audio bandwidth extension (BWE) methods solve this problem by reconstructing the high frequency spectrum of a degraded signal based on information from the low frequency part. LPC-based BWE may represent the coarse spectral envelope, but...
HTTP adaptive streaming is becoming dominant for commercial video streaming services. It is typically the client that chooses the rate based on estimation of the available network bandwidth in order to avoid the client buffer to be underrun or overrun. However, the unfairness among the clients and between the clients and other competing traffic has been identified as one of major issues that lead...
Active electromagnetic (EM) armor is a new kind of active defense system, which can enhance survivability of the armored vehicles through intercepting the invading target. The interception projectile and pedestal are key component of the active EM armor and material characteristic of the projectile and pedestal have great influence on the launching efficiency of the EM launcher. In this paper, working...
Electromagnetic rail launcher(EMRL) will enjoy a promising future in the military application because it has many advantages compared with conventional weapons, such as high muzzle velocity, energy sources facility, easily controlling, excellent work capability etc. One of the main problems of electromagnetic rail launcher is the heating to melt in some special places of the rail and armature, and...
Model experiment is an effective method to investigate the working characteristics of electromagnetic coil launcher (EMCL). Results from the model experiment applying to the prototype study of EMCL are especially meaningful. To verify feasibility of the EMCL scaling model experimental equipment of the single-stage EMCL is set up. Measuring principles of the loop current and armature velocity are described...
As technology becomes more portable, Mobile Learning (mLearning) has been a powerful trend in teaching, learning and training. With the help of Cloud Computing, mLearning overcomes obstacles related to mobile computing and holds considerable promise for future development and delivery in the education sector. This paper proposes a comprehensive model, Location, Technology, Culture, and Satisfaction...
A control method of variable lane based on video detection is proposed in this paper to handle the adaptive switching of the lane's oriented attribute. Based on the image calibration, visual loop detectors are built up in the surveillance video of the intersection. Then, the characteristics of the traffic flow, such as flow rate, velocity, queue length, can be obtained by the video detection based...
The rural drinking water safety has become the focus of national water sector currently. Compiling rural drinking water safety planning of county at the early stage of the project is particularly important. According to the experimental data, the planning in one county of Jiangxi province is used as an example. On the basis of analyzing current situation of drinking water in rural area, objective,...
The multi-objective control problem for discrete bilinear system with disturbances is studied and a multi-objective optimal control algorithm for solving discrete bilinear systems with sinusoidal disturbances is proposed. In the lower order of the algorithm, the auxiliary Lagrangian problem of bilinear -two quadratic form structure is solved by Dynamic Programming. The weighting vector in the auxiliary...
Map matching is an important supplementary means to improve the precision of vehicular navigation system. Three steps of map matching are completed by probability statistic method, correlation coefficient method and projection method in this paper, which are determining the error region of the sections to be matched, selecting the matched section and displaying the vehicular position on the electronic...
Study on the application of feedback technology in green construction of underground engineering was based on the case of the third metro line of Qingdao subway first-stage project. Theoretical analysis was used to forecast the ground surface settlement impact by construction, and the construction warning theoretical value is provided. The processes of construction were monitored, get the actual geological...
The design of a wideband circularly polarized antenna for BD2 and GPS is described in this paper. This aperture-coupled stacked antenna with low permittivity has the advantage of increasing the bandwidth of gain. The balance-feed by 4-port power-dividing phase shift network is used to improve circularly polarized bandwidth and circularly polarized purity. The simulation results and measured results...
From the necessity of developing modern agriculture Park this article summed up the types of contemporary agriculture Park. Combinning with the problems of current modern agricultural Park in practice, the author summarized the causes in Planning management and design, and put forward some countermeasures, in order to provide reference for future work.
Advances in machine learning technology have made efficient image denoising possible. In this paper, we propose a new ridgelet support vector machine (RSVM) for image noise reduction. Multiscale ridgelet support vector filter (MRSVF) is first deduced from RSVM, to produce a multiscale, multidirection, undecimated, dyadic, aliasing, and shift-invariant geometric multiscale ridgelet support vector transform...
Podaj zakres dat dla filtrowania wyświetlonych wyników. Możesz podać datę początkową, końcową lub obie daty. Daty możesz wpisać ręcznie lub wybrać za pomocą kalendarza.