Advanced Materials Research Vols. 989-994

Abstract: Coil transporters are widely used in rolling production line to transport coils among different positions. Aiming at the inaccurate parking space, low production efficiency, high requirement of working accuracy, inconveniency in repair and other problems during the working process, the running mechanism and lifting gear of the coil transporter have been improved, And the author analyze the structure of the improved body by FEA. The results of the analysis of car body show that strength and stiffness meet the requirements. The general property of the improved coil transporter has been, in a good condition, effectively bettered. It can meet the production requirement and enhance the economic benefits.

Abstract: Diffraction grating is a kind of very sophisticated optical element, It is usually used diamond ruled grating. Edge radius is one of the important parameters of diamond ruled grating, the effect of the edge radius to diffraction efficiency and ruled depth is analyzed by the theoretical calculation and finite element analysis in this paper. Get the influence law of diffraction efficiency, ruled depth and the ruling force, which has provided the theory basis for correctly precision edge radius.

Abstract: The paper presents an “L-type” leg applied in SiGe/Si Multi Quantum Wells (MQWs) based bolometer. Characterization structure has been designed to take measurement for α-SiNx:H film stress. The displacement of beam endpoint in the structure is 0.48 micron and the interior stress is about 87 MPa totally through generalized Hooke law. Furthermore, the mechanical analysis for SiGe/Si MQWs based bolometer has been taken and the largest stress is about 600 MPa in the calculation. The bolometer SEM photograph is shown at last.

Abstract: The hydraulic system of Aircraft is an important power organization and plays an important role in the process of airplane operation. The failures of the airplane have the character of concealment, complexity and uncertainty. So if the hydraulic system ran out of order it not only cause huge casualties and economic losses, but also has a long and low efficiency maintenance cycle. This text analyzes the common causes of the failures and the failures that newly appeared of the aircraft hydraulic systems in detailed. Some of effective solutions have been proposed which quicken accelerate the speed of fault diagnosis and improve the efficiency of aircraft maintenance.

Abstract: To provide UAV’s operator with flight information in real time, according to the property of remote control UAV and human-machine interface design, a flight controller has been implemented. The flight controller used LabWindows/CVI、GL Studio and UDP communication as the main developing platform. The system has been used in projection, and the test had showed that it could meet the need of the GCS(ground control station) of remote control UAV.

Abstract: The rotation speed and shift process of automatic transmission were analyzed intuitively based on lever method in this paper, the design reasonableness of transmissions was verified as well; At the same time the measure of improvement of design of transmissions scheme was put forward.

Abstract: The movement characteristics of hydraulic exciting piston is a small displacement and high reversing frequency. The movement of the piston is to adapt to the requirement of quick reversing resistance. The mating surface seal uses to reduce the motion resistance to meet the requirements of the piston movement. Piston position should be in the oil chamber oil area to meet the requirements of the piston movement and oil circulation. Elastic beam with hydraulic cylinder is connected together . This structure is conducive to the piston and the connection of elastic beam and the installation of the oil cylinder. The causes of the different moving displacement of piston is leaking.

Abstract: In order to achieve long distance monitoring of gas concentration and humidity underground coal mine,a new monitor of gas concentration and humidity,which contains upper computer,master station and a lot of monitoring points,is designed.Every monitoring point is consisted of gas concentration sensor MJC4/3.0L and humidity sensor HS1101,which is used to conveys the data to master station by RS-485,again by RS-485 transmitted to the upper computer and it realizes the real-time monitoring of gas concentration and humidity undereground coal mine.

Abstract: In order to deal with the model uncertainties of ROV (remotely operated vehicles) caused by current disturbances, umbilical cable and robotic manipulators, an adaptive backstepping controller and an adaptive PD controller are applied to control the ROV. The adaptive backstepping controller is used to control the horizontal motion, and the adaptive PD controller is applied to control the Vertical motion. Finally, the method is verified effective by the computer simulation.

Abstract: In the high power industrial control network, due to the large user base, the data traffic is plodding, the data formats are inconsistent, the network data storm is difficult to monitor. A kind of high power industrial control network data monitoring and control system is designed under non-uniform formats. The network node information collector is designed, the data is collected, and the data collection result is taken as the mathematical expectation, the mathematical expectation is trained. The problem of data flow storm statistics is solved. In the system, the format conversion function is added, data storm monitoring results is taken with the format conversion, and they are stored as text format. The monitoring program reads and displays the result, the difficulties brought by the format is not unified are solved. System test results show that the system can monitor the large power industrial control network data storm, the monitoring result is precise, and it can make the formatting process fast. A size of the generated result file is 18.1%, of the original file, and can fully reflect the network data storm characteristics, the effect is perfect.