Simulation of Vehicular Ad Hoc Networks (VANET) plays an crucial role on design and development of VANET including routing algorithms, mobility management and so on. In the paper, the SVNRCS system ...is presented to simulate VANET in realistic scenes. Its vehicle distribution and movement model are based on realistic GPS data. Thus it can simulate more real VANET environment. The architecture and implementation of SVNRCS is presented.
A three-dimensional continuous autonomous chaotic system is proposed in this paper, which is a new butterfly-shaped chaotic attractor obtained via modification from the newly coined Liu system. ...Lyapunov exponents, fractal dimension and strange attractor of the new chaotic system are studied. Its chaotic dynamical behaviors and basic dynamical properties are proved by numerical simulation and theoretical analysis. Furthermore, the forming mechanism of the new chaotic attractor is investigated.
The positron lifetime data in high-Tc cuprate perovskite YBa2Cu3-xMxOy (M = Al, Sn) systems with different dopant concentration x are reported. A significant substitution dependence of the positron ...lifetime parameters was observed, and the local electron density n(e) and defect concentration C(v) were also evaluated as a function of substitution content x. The results showed that in the region of known structural transition from orthorhombic to tetragonal phase, n(e) and C(v) present a large anomalous change. Here, n(e) decreased and C(v) increased. These can be interpreted by electronic weak localisation in Cu-O chains and would affect the charge transfer in the superconducting state. The mechanisms of positron annihilation were also discussed. 22 refs.
Smart home controller have been used in many cases, user can monitor and control the electrical device in home from distance through Internet. In this paper we introduced the implementation of smart ...home controller. The system consists of three subsystems: embedded controller, signal converter and terminal device. To enable the user manage the controller anywhere and anytime on different terminal, the B/S architecture is selected. As the system consists of many different sensors and actuators, the controller should parse different protocols. Furthermore, to make the new actuator can add to the system, the address learning method was introduced.
This paper uses industry powder blast furnace production computer measure-control system as application model, discusses the self-learning algorithm in Master Slave computer measure-control system, ...and stresses the working principle of Computer Self-learning Master Slave Control System and many technical problems in software development.
In this paper, based on the Takagi-Sugeno (T-S) fuzzy modeling approach, by adding novel type of parametric perturbations to the fuzzy consequences and varying the control parameters, the complex ...dynamical behaviors of the newly coined Liu chaotic system is further studied. Numerical simulations show that: the chaotic Liu attractor still has more abundant and complex dynamical behaviors, which obtained by a so-called compression and pull forming mechanism.
Traffic status estimate based on data fusion Chen Lin; Wei Shutao; Shi Linxiang
2010 2nd International Conference on Education Technology and Computer,
2010-June, Volume:
5
Conference Proceeding
Traffic information estimation is one of the most functions of Intelligent Transportation System (ITS). At present, it is estimated based on single data source, especially GPS data. The average speed ...of floating cars is generally utilized to evaluate the route status. However, the speed can not always represent the real traffic status, and usually leads to misjudge. Thus, Multi-source should be evaluated to acquire more accurate estimate. In the paper, Rough Sets Theory is utilized to fuse different data to more accurately estimate the traffic status, including current GPS data from uplink and downlink lanes and historical data. An example is also presented.
In this paper, the performance evaluation of embedded system based on behavior expressions is presented. First, the PN model of a case of digital oscilloscope based on SOPC is presented, and then the ...performance analysis of behaviour expression is applied to analyze its time features and related measures have been obtained. The results not only get to know the system performance during its processing, but also provide analysis method for embedded system. Based on the results of performance evaluation, the performance bottleneck can be identified, which will provide the guide for improvement of the embedded system.
Small-scale industrial computer control system considers applications of medium and small industrial production as objects, using embedded technology, Can bus technology and optimized real-time ...online control strategy, open intelligent I/O modules, which has advantages of reliability, scalability and human-machine interfaces easy to program. In the paper, the design and implementation of this system is presented, which can not only complete the computer management of general production, but also completely monitor the injection volume and fed-batch speed.
For some single chip micro computer (MCU) system which work conditions fluctuate seriously, it is necessary to input data and adjusting control parameters by human-computer interface. However, the ...programs of MCU AT89C51 can not be altered after being programmed into memory. Firstly, the cooperative circuit of AT89C51 and AT24C2 is designed to solve such situation. In addition, a practical system implements precise control by MCU for the read and write operations of the sequential EEPROM chip. Then, the data memorized in AT24C02 are obtained from machine learning and will not lose after power off if altered.
