Advanced Materials Research Vols. 989-994

Abstract: This paper introduces a new type of elastic gear coupling structure, and gives the calculating strength formula and related material of the parts, establishes the three-dimensional model, simulates the nonlinear elastic gear ring, gets the analysis of the distribution of strain and stress in the ANSYS software, verify the strength condition.

Abstract: Large-scale wind turbine generators with power electronic converters that operate near series compensated transmission lines are susceptible to un-damped sub-synchronous oscillations. This sub-synchronous oscillation is called Sub-synchronous Control Interaction (SSCI). Based on PSCAD / EMTDC simulation platform the establishment of Double Fed Induction Generator (DFIG) equivalent inverter controlled sources and network model, and verify the correctness of the equivalent model. Analysis the impact of series compensation and rotor-side converter PI parameters characteristic of the SSCI based on test signal method and time-domain simulation method. The results show that increasing the degree of series compensation , inner gain constant increases and inner integral time decreases will help increase SSCI, outer ring of PI parameters has little effect on the SSCI .

Abstract: An inertial unit includes many parameters, such as: position、speed、acceleration and so on. Now estimate the acceleration and angular velocity may seem simple, because an accelerometer can provide a measure of acceleration and a gyroscope can provide a measure of angular velocity. Nevertheless, we will see below that this apparent ease of hiding the very real difficulties.The aim of this paper is not to recreate an complex inertial unit, but try to estimate the inclination angle and the angular velocity of an object by using some math filters, This problem we will not only tap away the complexity of the implementation of an inertial, but more importantly to use a math filter to make the prediction information and data fusion multi-sensors.

Abstract: Packet loss during network transmission through internet has negative influence on vehicle remote steering operation. Model of the remote steering system was built to analyze the steering quality. On basis of former study, a kind of packet loss compensator was designed from the aspect of predictive compensate control using hybrid pi-sigmoid fuzzy neural network. Simulation results showed that the compensator worked effectively. It was able to reduce the bad influence of packet loss during remote vehicle steering procedure.

Abstract: Telescope laser pointer is generally used firearms and other light weapons systems, to ensure accurate light weapons capable of targeting, this paper presents a telescope system automatically detects a laser pointer, laser pointer can be the role of the distance, the laser divergence angle of the laser spot size of the laser optical axis adjustment range and the laser optical axis deviation and other parameters were measured. In this paper, the detection system structure, optical structure was designed; proposed laser pointer detection principle of the parameters; and software design. At last, to meet the requirements of this system has been experimentally derived by experimental verification, measurement accuracy.

Abstract: Based on the emerging ZigBee wireless RF communication technology, this paper presents the design of a miner information collection terminal. The entire system is designed around the CC2431 SoC hardware circuit, through ZigBee networking, to achieve the location of underground environment and miner vital signs data acquisition, so that it can provide effective help to quickly carry out rescue work.

Abstract: This paper designs a embedded video monitoring system based on ARM processor Ep9315 and TMS320DM642, and using embedded Linux operating system. In the system, video capturing module uses the video decoder TW2814. In order to capture better data, the control of TW2814 is needed. Through the imitation of I2C bus, the driver provide the application with the function of the setting of capturing parameters such as hue, color saturation, contrast and brightness, and the check of video losing.

Abstract: This paper describes the pinhole camera model combined with an area sensor and a regular lens and the imaging model of the binocular stereo vision system. Also a method to determine the internal and external parameters of a camera by transferring the coordinates three times is described. Then a calibration experiment is carried out with the Halcon calibration board which proved the method works. The method mentioned in this paper has laid a good foundation for measuring the size of objects with the binocular stereo vision system.

Abstract: Due to the large and medium-sized cities in our country is more; the urban rail speed is low and the environmental protection high capacity requirements. Each city urban rail structures more or less differences. Especially fastener system is various, even in the same line also exist different deduction system; Because the subway in China fastener system is various and not a fixed is widely used fastener system; The paper gives a simple summary of subway common shock absorber fasteners in China. I hope it can give a reference to researchers on fasteners.

Abstract: This paper describes research on some methods of reducing power consumption to reduce the volume accompanying logger. For the requirement of ultra-low power consumption and miniature, the design is described separately from the hardware and software, mainly including temperature detecting module, interface of communication, low current circuit hardware, energy conservation ,arouse from power down state, communication protocol, etc. The experimental tests for device prove that the research can achieve low power requirements.