Advanced Materials Research Vols. 850-851

Abstract: A new approach of feeder calculation was introduced in this paper. By using the simulation software, the feeder size and location can be calculated easily and test by run simulation, the results can be seen directly. Take the rocker arm as an example, the method was introduced by using SOLIDCast.

Abstract: This paper studies the near-field beamforming. Based on near-field model, a constraint optimum beamforming algorithm is proposed. The algorithm transforms solving weight value into optimal solution searching, and obtains the optimal weight value by iterative solution. The algorithm can produce optimal beamforming under restricted mainlobe condition. Analogously, it can produce the optimal beam forming under sidelobe constraint. The algorithm can be modified appropriately depending on the desired targets to achieve the desired response control constraints. The algorithm is simple. The simulation results based on discrete uniform linear array show the validity and effectiveness of the method.

Abstract: In this paper, chaos synchronization of the modified Sprott E system is investigated. Based on the stability theorem for fractional systems, tracking control approach is used for the fractional-order systems with uncertain parameters. Meanwhile, suitable adaptive synchronization controller and recognizing rules of the uncertain parameters are designed. Numerical simulation results show that the method is easy to implement and reliable for synchronizing the two nonlinear fractional order hyper-chaotic systems.

Abstract: In this paper, adaptive synchronization of the fractional-order Sprott N system is investigated. Firstly, the chaotic attractors on different phase plane of the system are got by means of numerical simulation. Then based on the stability theory of fractional-order systems, the adaptive synchronization of the system is realized. Numerical simulations are used to demonstrate the effectiveness for the controllers.

Abstract: In this paper, dynamics and synchronization of the fractional-order Sprott E system are investigated. Firstly, the chaotic attractor of the system is got by means of numerical simulation. Then based on the stability theory of fractional-order systems, the synchronization of the system is realized. Numerical simulations are carried out to demonstrate the effectiveness of the controllers.

Abstract: Considering the problem of invalid data caused mismatch of wavenumber spectrum which contained in turbulence observation data, an algorithm of turbulent wavenumber spectrum matching based on SVM is proposed. Category labels are obtained from pre-processed raw data by cross validation algorithm, and then the optimum parameters of the classifier are got through SVM learning algorithm. Sea trial data validation results indicate that the algorithm has high matching accuracy, and provides a new way to calculate the turbulence wavenumber spectrum matching.

Abstract: Video surveillance technology is playing an important role, and it is widely used in some fields. With the popularity of Android OS, it draws researchers attention to increase the development of video surveillance systems on the platform. This paper presents a smart real-time video surveillance system based on Android smart phone. This system detects moving object by using improved GMM (Gaussian Mixture Mode) algorithm, recognizes invading human with cascade classifier, processes image data with coder & decoder, transmits data over RTP (Real-time Transport Protocol). It also applies some methods to improve the accuracy of moving object detection and recognition, speed up recognition process. The experimental evidences show that it can realize real-time video surveillance and smart alarm.

Abstract: Compared to condensed phase, effect of pressure on molar formation enthalpy for gas phase can not be ignored. To study calculation method of molar formation enthalpy for real gas, calculation formula of isothermal enthalpy difference is deduced under temperature and pressure coupled interaction by SHBWR equation of state, and whose applicability inspection is finished by experimental data of molar formation enthalpy for superheated steam. Results show that, calculation accuracy of model increases along with the increase of temperature, but decreases along with the increase of pressure. When working temperature is more than 800 K, the established model can calculate molar formation enthalpy for real gas accurately. Steady state properties of a thermal power system is analyzed based on the established model according to Hesss Law, result show that, heat flux of the system increases under pressure action, and mass flow rate of hydrogen the system needs decreases at the same time.

Abstract: The time-delay delay phenomenon is a kind of widespread physical and biological phenomenon. The existence of time-delay not only give the stability of system analysis and controller design brings great difficulties but also usually make the systems unstable and even cause the system performance deteriorated. We use the adaptive dynamic iterative algorithm to solve this equation. By using the neural network to achieve the iterative algorithm, get the optimal control law of the systems with time delay. The simulation results show that the adaptive dynamic programming method to solve the optimal control of the nonlinear system is effective.

Abstract: The improved method for image edge detection based on wavelet transform modulus maxima included following steps: wavelet transform was adopted to compute local modulus maximum of edge and noise. Based on the differences between wavelet transforms of edge and noise, the separation of noise and edge was achieved by detecting local modulus maximum with quadratic discriminate method. Simulation results indicate that the inconsistency between high precision localization and high denoising ability existing in traditional edge detection algorithm could be resolved by means of the algorithm.