Advanced Materials Research Vols. 301-303

Abstract: According to the heterogeneous of devices of process industry and the characteristics of embedded systems, this paper proposes a data integration solution based on XML, which builds a data integration and exchanging demonstration platform in the environment of STM32, ARM9 and Windows CE.net and implements the parsing of XML documents within embedded systems. This paper gives a powerful method to realize the integration and sharing of data information among process industry field devices.

Abstract: In this paper ,the mine tunnels is regard as wave-guide which contains kinds of un-beneficial medium, we have study the formulas of electromagnetic waves propagation attenuation and roughness attenuation, the relations between propagation attenuation and roughness and frequency were simulated. The results show that the influence of propagation attenuation in lower frequency is more obvious, and roughness attenuation is increased rapidly as roughness of coal mine tunnels increasing. But tilted attenuation is stronger than roughness attenuation as propagation frequency increasing.

Abstract: In this paper, a cross-coupling synchronization controller is proposed to achieve a synchronous motion for high-precision positioning systems with uncertainties and disturbances, where an additional P controller is equipped to generate cross-coupling control action. Tuning procedure of the control parameters is also provided, so that improved tracking and synchronization performance can be obtained. The key to the success of the new design is to ensure that each motor tracks its desired trajectory while synchronizing motion with others. Experiments on a positioning system with two permanent-magnet linear motors demonstrate the effectiveness of the proposed control method.

Abstract: The key design and implementation methods of Miniature 3-axial Fiber Optic Rate Sensor are described in detail. Based on plenty of theoretical analysis and experimental validation, effective measures and key technology on optical components, fiber coil technics, assembly methods, control circuits and structure solidity are adopt and summarized. Finally, its main engineering performance is tested and listed detailedly. From experimental results and engineering practice, we can conclude that Miniature 3-axial Fiber Optic Rate Sensor has the performance of high reliability, radiation resistance, low air pressure resistance, temperature resistance and high reliability, and can be widely used in some special and professional fields. More importantly, it greatly promotes the development of fiber optic sensing and inertial technology application of China.

Abstract: To improve the electric power quality has become an important issue in building an intelligent electric power grid. In this paper, the ARM chip and the fuzzy controlling method were adopted to develop and study an intelligent monitor. The design of the hardware and software was implemented. The experiment’s results demonstrate that the monitor can improve the precision of the collected electric data and the power distribution efficiency and the reliability. It can be used in the ship power systems, industry, daily life and so on.

Abstract: The image matching recognition method of phase correlation is based on the shift characteristics of the Fourier transform. The traditional image matching recognition algorithm has significant influence of the template size upon its matching accuracy and has weak resilience to noises except for the gauss noise. Addressing these shortcomings, we proposed a multi-scale matching recognition method based on phase correlation, combined with wavelet transform and edge detection. The algorithm, processed the reference image and the template image in different scales with such steps: decomposition, denoising, reconstruction, edge detection and the Fourier transform, phase correlation. Hence, it overcome the dependence upon template size effectively and improve the reliability and the resilience of various noises. Finally, we verified the algorithm with a real ground shooting image as the reference image and an intercepted part as the template image. The results have shown that the proposed approach is better than the traditional image matching method.

Abstract: Using photoelectric sensor collects two physical quantities, displacement and time of the experiment car. The signal realizes conditioning after amplifier-filter circuit. It is transferred to computer through the serial portion of RS-232 after the disposing of Single-chip Computer. The experiment software designed by ourselves calculates size and relationship between the physical quantities relevant to acceleration, and draws the relevant figures of the physical quantities.

Abstract: The paper analyzes the rotor imbalance of cooling fan for the engine, and come to influence coefficient per unit quality. We can easy count the practice balancer cooling fan rotor. This method is very simple.

Abstract: The design philosophy of non-invasive has been introduced in motors monitoring system, in which used air-gap torque to measure efficiency. Zoom-FFT is required for the testing of speed which very few assumed values are required. An efficient implementation of cosine modulated FIR analysis synthesis filter banks is derived. The structures for the analysis and synthesis sections consist of polyphase structure and discrete sine and cosine transform networks. The redundance of computation is removed and the computational efficiency is raised. The implementation structure is simpler. The efficiency of the whole system has been improved, and approved that this algorithm has a good value.

Abstract: Analysis Methods of Power characteristics for hydraulic pressing of the traction drive device are studied. The operating principle of hydraulic pressing of the traction drive device is analyzed, Probe into the rule of variation of the inner and outer Friction Pairs about the traction coefficient and the transmission ratio, A mathematical model of transmission traction characteristics is built up based of the Elasto-hydrodynamic lubrication theory, to explore the power characteristics of the friction pairs under different slip roll ratio and normal loading force, and the transmission of the input power and output power under different total sliding rate and loading force. The results showed that the transmission power of hydraulic pressing of the traction drive device is increasing when the normal loading force is increasing under some sliding Rate, but the transmission power tend to stable when the shearing stress is close to limiting shearing stress；and with the Sliding Rate increasing the transmission power increase under some normal loading force, but the transmission power eventually tend to stable when the Shearing Stress is close to limiting shearing stress.