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An in-depth study of applying wireless sensor networks (WSNs) to real-world mineworker location and tracking under coalmine is provided. Requirements of WSN for the application are developed that cover the hardware design of the nodes, the design of the sensor network, and the capabilities for remote data access and management. A system architecture is proposed to address these requirements for personnel...
Distributed and remote monitoring and control are important to manage the distributed major hazard installations and to keep people and properties from dangers. In the present paper, we propose the multi-agent group (MAG) model which involves 5 agents with complementary functions for monitoring and control of hazard installations. The distributed MAGs can achieve the distributed monitoring and control...
JSK fuzzy model is decomposed into two different populations to cooperate coevolution model learning technique for its learning is the problems of multiple constraints and multiple target optimizations. All the related problems are discussed, including encode, evolution calculation, cooperation of every population and evaluation strategy of adaptive value. Fuzzy model is decomposed into two populations:...
In this paper, an adaptive congestion controller for a networked control system with multiple feedback paths is developed. By taking into account time delays in the system model and utilizing a nonlinear controller, a linear switched time-delay system is obtained. By invoking the Lyapunov-Krasovskii theorem, an LMI based stability condition is derived to guarantee ultimate boundedness of the closed-loop...
Along with speeding up of economic globalization, the cultivation of industrial international competitiveness becomes the most important factor for the developing country to realize the economic fast growing. The evaluation of food industry international competitiveness also has the important strategic value. From the characteristics of food industry international competitiveness and the insufficiency...
In this paper, based on the development of virtual reality, a new real-time control method was introduced. This method was developed on the basis of MATLAB environment and takes effect to control a one-stage inverted pendulum system which was a typical unstable controlled object. The article introduces key techniques such as mathematical modeling of inverted pendulum, modeling of virtual reality system,...
A method for downloading and updating product ECU applications was proposed. According to it, a ECU (re)programming device called BootLoader has been devised and developed. BootLoader had abilities of downloading and updating applications of ECU and can perform reprogramming of calibration data. Seed & key algorithm was used to improve the system security. Special Format File Generator and multilevel...
This paper describes the development of a prototype high-energy supply system for producing magnetic field for use in medical applications. A new technique to get an invariable-strength and multi-wave magnetic field generator (square, triangle, impulse and sin) has been proposed, Furthermore it had implemented on microcontroller-based system providing an alternating magnetic field generator (AMFG)...
Based on the simulation of electric vehicle (EV), the parameter design methods and winding switch characteristics on the driving permanent magnet brushless direct current motor (BDCM) are studied. First of all, the mathematical model of the BDCM when used to drive the EV is established, then effects of the EV velocity and the motor's leakage inductances on the current trace ability, torque production...
The virtual line based video vehicle detection algorithm is used extensively in intelligent transportation system (ITS) because of its high real-time performance, but it only utilizes luminance values of pixels on only one virtual detection line to detect moving vehicles, as a result, its false reject rate (FRR) and false accept rate (FAR) are high. In order to solve this problem, a virtual line group...
Global Positioning System (GPS) is widely used in system positioning or navigation communication, and code division multiple access (CDMA) is applied in personal communication and data transmission etc. In this paper, the data format of short message data in CDMA and the data format about GPS data stream are introduced in brief, and then a GPS and CDMA application system based on embedded Linux operating...
A research platform for wind energy system is developed in this paper. An inverter fed induction motor drive the wind generator replacing a real wind turbine. The power-speed characteristics of a wind turbine are physically implemented by an induction motor drive. For a given wind turbine characteristics, the shaft torque of induction motor is calculated by the given wind speed and measured generator...
Wind power is fluctuate, intermittent and stochastic. The large capacity wind power connected with power grids will bring austere challenge to the safety and stabilization of power system operation. Wind speed prediction is an effective approach for this problem. ANN (artificial neural network) has been used extensively in wind speed prediction. But ANN is apt to getting into local minima and its...
This paper investigates the reconfiguration fault-tolerant control method of the on-orbit satellite attitude control system with recovered faults. A novel integrated approach is proposed includes a control effectiveness factor and a reconfigurable fault-tolerant controller. A two-stage Kalman filtering algorithm is developed to estimate the size of control effectiveness factor in the closed-loop attitude...
Asymmetric rolling can reduce the thickness of rolled strip and rolling load significantly. In this paper, the asymmetric cold rolling of thin strip with roll edge kiss was analysed theoretically and the rolling pressure, intermediate force between the work roll and backup roll, the work roll edge kiss force, the strip profile after rolling are obtained for this special asymmetric rolling. The rolling...
New methods of cold rolling process modeling presented here are highly recommended for development of rolling mill control systems. They ensure increased rolling speed, upgrade the quality of cold rolled sheets and save energy in production.
The key distribution in space information network is an important part of the key management for the security of information transportation. In this paper, an agile, reconfigurable key distribution scheme for space information network is proposed, in which the key distribution protocols are combined with the characteristics of the layered space information networking. Both asymmetric and symmetric...
The multiple objective scheduling problem (MOSP) becomes focus in recent years in actual manufacturing system. The most practical way to solve MOSP is using dispatching rule combination based on simulation evaluation. It mostly combines particular dispatching rules with linear manner corresponding to multiple scheduling objectives, however it is difficult to determine what combination of dispatching...
Using the extension technique, the return threshold is evaluated first, then based on the exergoeconomics theory, the supply chain is regarded as a huge energy system with the new view, and the sustainability of the supply chain system is discussed under the circumstance of exergoeconomics in this paper, and then the metric about "system negative environment effect" is introduced to measure...
To generate the reference waveforms of the switch-linear hybrid flexible waveform power amplifier, an arbitrary waveform generator is implemented in this paper. With the advantages of the DDFS, such as fast setting time, high frequency resolution, continuous-phase, short switching time, low phase noise, there is significant interests in exploring the arbitrary waveform generator based on DDFS to replace...
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