Applied Mechanics and Materials Vols. 513-517

Abstract: For the problem of single-phase ground fault line selection of small current grounding system, in this paper, according to the wavelet theory advantage processing capabilities of transient mutation signal ,line selection criterion based on wavelet transform modulus maximum principle of singularity detection is proposed . By analyzing the single-phase ground fault waveform of small current grounding system in the neutral point not effective grounding system, steady state and transient characteristics of fault occurs is obtained, building bus with three outlets of 10KV small current grounding system simulation model by using MATLAB software, and verifying the validity though a large number of simulation experiments on the method.

Abstract: Embedded industry as a branch of the new rise of IT industry, changing people's lives. For how to create embedded technology innovation models and innovation system, embedded technology innovation brings a variety of management issues, this paper studies the embedded industrial innovation index system. First, hierarchical analysis model represents the index system 6 first level indicators and 24 secondary indicators constituted; Then, the basic idea of G1 method is based on constructing a mathematical model to calculate the weights according to solving steps; Finally, according to the mathematical model to 6 secondary indicators "research and development" first level indicators under an example to illustrate the calculation process, and lists all the index weight calculation results through form. Results of this study will help countries understand the current level of development; provide the basis for the formulation of industrial development policies.

Abstract: This paper designs a new control scheme of solar water heater. The main designs are power supply circuit, water temperature display circuit, and mixed water temperature detection circuit. The system is simple and effective with low cost, which has accurate control of temperature and can show the actual temperature of the water heater. By automatically testing the temperature of the water heater, it has the self-check function of adjusting temperature, and keep thermostat temperature.

Abstract: In order to fully research and describe the dynamics of the energy consumption of rail transportation equipment operation, this chapter will Petri nets Establishment and analysis of the environmental control system air-conditioning power consumption model, so as to deepen the understanding of the principle of the energy consumption of devices running depth grasp of energy consumption the operational features of the equipment, take appropriate and effective energy-saving measures.

Abstract: In order to reduce the energy consumption of air conditioning systems, the best running model is adjusting the humiture according to actual needs of environment and groups.This paper take out a control strategy based on the Multi-objective Optimization Evolutionary Algorithms.With cntrol simulation, it achieve the energy saving effect in air conditioning units groups, proposed multi-objective optimization control strategy.

Abstract: A novel three-phase three-level inverter circuit with asymmetrical legs is proposed. The new prototype is very effective and efficient for improving the quality of the inverter output voltage. Firstly, the structural parts of the inverter are briefly described, then switching strategy and operational principles of the proposed inverter are explained and operational topologies are given. The proposed topology reduces the number of switches, losses, installation area and converter cost. Finally, the simulation and experimental results are provided to validate the effectiveness and advantages of the proposed configuration.

Abstract: In TD-LTE (Time Division-Long Term Evolution) system, Resource Element Group (REG) is the unit of de-resource mapping for Physical Downlink Control Channel (PDCCH), due to the reference signal should be considered, which lead to the large calculation. To solve this problem, a modified method is proposed in this paper to reduce the cycles of de-resource mapping. Calculation and simulation reveal that this scheme can reduce the calculation significantly. At the same time, the feasibility and effectiveness of this modified method have been verified.

Abstract: In this paper, operation needs and characteristic of LFSR multi-step parallel update technology based on divider circuit design are analyzed. LFSR status switch parallel update principle based on division and serial input parallel update principle are studied to solve multi-step parallel update data generation of LFSR utilizing division. Through hardware implementation and performance analysis, the hardware circuit using LFSR multi-step parallel update operation principle based on division has some advantages, such as more flexibility and high cipher operation performance. It is a better LFSR multi-step parallel update operational model.

Abstract: The system realizes a touch embedded video player based on DevKit8500D development platform whose processor is DM3730. Adopting open source MPlayer as background, then the visualization operation of the player is implemented by writing a QT interface program which realizes invoking the MPlayer. At last, the interface program is transplanted on the development board. Test results show that the basic function of video player and keeping it running smoothly are realized, so the design target is reached.

Abstract: We propose a noise-robust continuous speech recognition (CSR) method for modeling and recognition. In recognition, we divide the continuous speech vectors to segments using proposed algorithm, then use DRA based on the segments for recognition. The proposed method efficiency is studied for noisy environment. DRA decreases the difference between the model and recognition continuous speech vectors. The new algorithm focuses on adjust the vectors by using different maxima in different segments. Segment-based DRA algorithm can make noisy speech feature vectors closer to the model. The average recognition rate has been improved at different noise and SNR conditions.