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Aiming at the shortcoming of traditional time domain sequence component detection algorithm, a kind of Fourier analysis algorithm of sliding-window mean-value in frequency domain was put forward. Symmetrical component method was used in calculating the sequence component of the fundamental phasor in this algorithm after using the calculation of continuous average sliding-window of Fourier analysis...
A new method that the hidden nodes of the neural network are chosen by the genetic algorithm is proposed in this paper. The experimental results show that the appropriate hidden nodes can be selected by the genetic algorithm, and the results from the identification indicate that the system is quite efficient for identifying multi-objective polluted infrared spectra.
The large-scale Crossing Waypoints Location Problem (CWLP) is a crucial problem in the design of Air Route Network (ARN). CWLP is fully non-separable and non-differentiable, and thus traditional algorithms can hardly deal with it. This paper proposes an algorithm named Cooperative Co-evolution with Weighted Random Grouping (CCWR) to tackle it. CCWR employs the weighted random (WR) grouping strategy,...
On the base of the analysis on the good and bad points of the potential field realization way plan, the paper proposed evades based on the simulation annealing algorithm entire independent robot bonds the method. The experimental result indicates that, the track speed can satisfy the system real time request very much, and has the high reliability.
Particle swarm optimization (PSO) is a novel evolutionary algorithm which has a better convergence rate and computation precision compared with other evolutionary algorithms. From the perspective of optimization, the self-tuning of PID controller parameters is to find the best global optimum value in the solution space of Kp, Ki, Kd. In this paper an optimal design of PID controller based on particle...
With the improvement of the performance of ADC, it is available to sample and process real signal in intermediate frequency in radio communication system design. The large source usage and long latency of image-reject filter and decimation in IF DDC are the difficult problems in design. But In many occasions the signal can be processed as narrow band signal. In this paper, we designed an M-points...
Pervasive computing has been used widely in civilian areas. In the field of aerospace, researchers also have paid more attention to pervasive computing and made scientific researches on it. According to the idea of pervasive computing, an overall program of aerocraft design is introduced in this paper. Subsequently a functional schematic of radar information processor embedded in aerocraft is presented...
The security of some special pervasive computing systems is very important, but generally speaking, the system resource of pervasive computing device is limited, so a cipher algorithm which possesses high security and low computational complexity is needed. This article puts forward a coupled chaos cipher algorithm based on the one dimensional logistic chaos mapping and piecewise linear chaos mapping,...
The previous study of pattern discovery in storage systems focus on sequential pattern (SP) mining in lower level traces, but they don't scale well to the application level. For patterns in application level are mostly composed of Contiguous Item Sequential Patterns (CISP) which are much simpler than SP, so it's inefficient for the previous studies to mine CISP with clumsy SP mining algorithms. We...
A new encryption scheme for digital images based on compound Chaos algorithm is presented in this paper. The compound Chaos algorithm combines the Lorenz Chaotic system and Logistics map to generate the pseudo-random sequences. Then the pseudo-random sequences are used to produce the permutation matrix to encrypt the digital image. Matlab is used for simulation testing of the image encryption. Algorithm...
Unlike traditional routing schemes that route all traffic along a single path, multipath routing strategies split the traffic among several paths in order to ease congestion. It has been widely recognized that multipath routing can be fundamentally more efficient than the traditional approach of routing along single paths. Yet, most studies in the context of multipath routing focused on centralized...
In keyword search over relational databases (KSORD), retrieval of user's initial query is often unsatisfying. User has to reformulate his query and execute the new query, which costs much time and effort. In this paper, a method of automatically reformulating user queries by relevance feedback is introduced, which is named VSM-RF. Aimed at the results of KSORD systems, VSM-RF adopts a ranking method...
It is difficult to establish a precise mathematical model in extended Kalman filter (EKF) data fusion algorithm for GPS/DR integrated vehicle navigation system, a novel data fusion algorithm is put forward, which based on wavelet packet analysis. Firstly, the algorithm chooses best wavelet packet group for GPS, odometer and gyroscope signals with least cost principle, and does dynamic pre-filtering...
Several methods are studied in order to improve the communication reliability. However, little methods are discussed aim at medium-voltage power line communication (MV-PLC). In this paper, the general idea of the noise elimination based on single-phase line has been changed. There is a new idea to use three-phase line for noise offset. By analysis of the noise correlation properties, the LMS adaptive...
The discovery of association rules in data mining is an important issue, the core of which is the frequent pattern mining, Apriori algorithm is classical for the association rule mining, but it should repeatedly scan the database and can produce plenty of candidates. By examples, it is proved that Boolean matrix association rules algorithm can improve the algorithmic efficiency by reducing the times...
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