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Zeng X.,Guangzhou Institute of Railway Technology
Proceedings - 2014 6th International Conference on Measuring Technology and Mechatronics Automation, ICMTMA 2014 | Year: 2014

With the medium and low speed maglev train plays the role of commercial operation gradually, people put forward higher requirements for train safety reliability, which makes train security assessment even more prominent. Aiming at the characteristics of the maglev train equipments as well as the limitations of traditional security assessment, the establishment of a multi-state security assessment based on Bayesian network model has better diagnostic reasoning and causal reasoning ability. Finally, using the model to analysis the train traction system quantitatively, finding the weaknesses of the system and the relationship between the equipments to make rational maintenance decision. This will provide a basis to improve the reliability of train equipment and repair and maintenance work. © 2014 IEEE.

Wu J.,Guangzhou Institute of Railway Technology
Proceedings - 2014 6th International Conference on Measuring Technology and Mechatronics Automation, ICMTMA 2014 | Year: 2014

The risk of collaborative projects is complex, and generally no project can be used as a reference. So, the method which is used to evaluate the risk of traditional project is not proper for the collaborative project. Combining the triangular fuzzy number and analytic hierarchy process (AHP) method, a model for evaluating the risk of collaborative project is established in this paper. And a collaborative project is introduced as an example to demonstrate the process and validity of the model. © 2014 IEEE.

Su D.,Guangzhou Institute of Railway Technology
Applied Mechanics and Materials | Year: 2014

Spindle wear of CNC machine affects the working efficiency of the machine. To solve this problem, the reasons for the generation of CNC machine tool equipment wear is analyzed, the system's hardware modules and software modules are designed and implemented in accordance with the system requirements. Parameters such as input and output power, spindle speed of CNC machine tool equipment are acquired by the sensor circuit. After a comprehensive analysis of the data, system software combined with neural network model displays the test results on the LCD screen, real-time output of CNC machine tool equipment operating status and the spindle wear. Thus the operation of CNC machine is ensured and equipment failure is avoided. Through the system test, indicating that the proposed system can real-time output the monitor results of spindle wear of CNC machine tool equipment, and has high measurement accuracy for the main parameters such as power and efficiency of the equipment. © (2014) Trans Tech Publications, Switzerland.

Song J.Q.,Guangzhou Institute of Railway Technology
Applied Mechanics and Materials | Year: 2014

Tourism as an emerging industry achieves rapid development in our country and the competition becomes more and more intensive. With the deepening of informationization in our country, microblog gradually becomes the broadest information platform. In the background of new media, microblog marketing, a new kind of network marketing means was born. And more and more tourism enterprise enters the team of microblog marketing. This paper systematically studied application of microblog marketing in tourism enterprise in aspects of follower number, following number, comment number, forward number and content through collection of 3876 microblog messages from users of 128 different types’ tourism enterprises. More and more tourism enterprises join in team of microblog marketing while most of them have less interaction with followers, less number of effective followers and low utilization rate of microblog group. They can not realize utility maximization by full use of microblog. Microblog has large promotion space. © (2014) Trans Tech Publications, Switzerland.

Guan C.L.,Guangzhou Institute of Railway Technology
Applied Mechanics and Materials | Year: 2014

This paper focuses on the detection technology for Electric Multiple Units (EMU) break valves features. Aiming at the issues of EMU break valves features detection, this paper propose a kind of EMU break valves feature detection technology based on neural network algorithm which does not overly dependent on break valve characteristic parameters. The spatial function neural network algorithm is used to predict the EMU break valves features. The experiments illustrate the proposed algorithm can increase the detection accuracy with satisfactory effects in EMU break valves features detection. © (2014) Trans Tech Publications, Switzerland.

Zhou A.-N.,Guangzhou Institute of Railway Technology
Communications in Computer and Information Science | Year: 2011

There exist numerous types of business forms at different periods all over the world. This paper compares the stabilities of three business forms based on the decision-makers: Corporations with individual decisions (CIDs), multi-person decision corporations (MDCs) and stock corporations (SCs). Three business forms are first modeled as evolutionary graphs, respectively. By the existing results in the evolutionary graph theory (EGT), we then find that stock corporations (SCs) are more stable than MDCs while MDCs are more stable than CIDs. © 2011 Springer-Verlag Berlin Heidelberg.

Luo L.,Guangzhou Institute of Railway Technology
ICIC Express Letters, Part B: Applications | Year: 2015

In this paper, synchronizing a class of uncertain chaotic systems is studied based on adaptive fuzzy control technique. A robust states observer based slave chaotic system is designed to achieve synchronization with a given master chaotic system with system uncertainties. The underlying fuzzy systems’ parameters adaptation and system stability analysis are carried out by using Lyapunov based approach. Finally, simulations results are given to show the effectiveness of the proposed method. © 2015.

Xu A.,Guangzhou Institute of Railway Technology
Journal of Convergence Information Technology | Year: 2011

For document summarization, this paper proposes query-focused document summarization using concept analysis. It uses Latent Semantic Analysis for finding out the concepts and identifying representative sentences of the concepts; then it uses the correlation measure between two matrices to measure similarity. The summary sentences are selected with the similarity one by one. Experimental result shows that the proposed summarization method is effective, and it can improve the performance of summarization.

Li H.,Guangzhou Institute of Railway Technology
Applied Mechanics and Materials | Year: 2014

Research and development design is involved with inflatable lifting web professional boots in architecture industry limited space installation work technology field. This web-based boot includes boot body, lifting device and support to support the feet and the lifting device to fix on the boot body. The support uses the lifting device to connect to the bottom of the boot body, and through the lifting device function, it can have lifting displacement to the boot bottom. The workers put foot fixed on the support, so as to make the inflating lifting boots walk along with the workers. The adjusting lifting device can make support member move far or near the bottom direction of boot body. The workers can lift higher or lower along with the support. The workers can adjust the lifting device according to specific work height, without using or moving ladder or stool, to save time and improve the work efficiency.At present, the global architecture decoration industry conducts decoration construction for the inside of the house, it needs electrical workers, wood workers, pipe workers and other types of workers for construction work. Because of the height of people, the workers need to use ladder or stool to complete the work in construction. After completing a certain work region, they need to walk off the ladder or stool and move the ladder or stool to next construction location. It needs workers to frequently use or move ladder or stool in the operation process. Wasting time will lead to the low efficiency of work, and it is troublesome to use.According to effective domestic and foreign technology literature recordings, till now, the domestic and foreign construction indoor construction installation work can use small lifting platform for work, and they have not found new methods for workers not to use ladder or stool to solve the height work. Most researchers work to improve the ladder folding or lifting technology. The design of pneumatic lifting professional boots is an innovative product. © (2014) Trans Tech Publications, Switzerland.

Li Y.,Guangzhou Institute of Railway Technology
Applied Mechanics and Materials | Year: 2013

A parallel model reference adaptive control system was designed for reaching the optimal control effect and performance in the electrical control system based on the adaptive control theory. The control weighting coefficient was adjusted precisely in real time with the adaptive control theory for the matching and transmission of the self performance and the out information, and the performance of the control system could reach optimal performance. But on the other hand, the adaptive control theory hadn't is applied in the torpedo control system. An improved electrical control system algorithm was proposed in this system based on the adaptive control theory. The torpedo control system was taken as the example, the parallel model reference adaptive control system was designed. The hardware circuit diagram of the control system was designed. And the control algorithm of the three-channel such as the pitch, yaw and roll of the torpedo control system was designed separately. And the output signal of the system and the software system of the three-channel torpedo control system was simulated. The design result and the simulation result show that the control performance is stable and the software system shows nice performance of human-computer interaction property and good perspective of application performance. © (2013) Trans Tech Publications, Switzerland.

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