Xian Aeronautical University

Fengcheng, China

Xian Aeronautical University

Fengcheng, China
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Xiao J.,Xian Aeronautical University
Chemical Engineering Transactions | Year: 2016

Dangerous chemical storage warehouse is one of the important links in the production safety of chemical enterprises. It stores a lot of raw materials, intermediates, finished products, etc., which leading to dangerous chemical warehouse is the most dangerous place, besides most of the chemical raw materials are flammable, explosive, toxic or high voltage storage. Therefore, it is very important to monitor the state parameters of the raw materials and the surrounding environment of the warehouse. This paper mainly designs the embedded remote monitoring system for liquid ammonia reservoir area. The design adopts ARM processor and Linux system as the core, combined with automatic positioning technology, modern sensing technology, to real-time monitoring the chemical parameters such asstorage pressure, storage level, ammonia concentration, temperature and others of liquid ammonia reservoir. The research results are of great practical significance for the establishment of the remote monitoring system and the dangerous alarm mechanism in the scattered dangerous chemical reservoir area. Copyright © 2016, AIDIC Servizi S.r.l.

Wang X.-Y.,Xian Aeronautical University
Journal of Computational and Theoretical Nanoscience | Year: 2016

This paper analysed the working principle of hydraulic jumbolter, the electronic loads outside of breakstone, stress distribution status, physical process of brokering rocks, established finite element model of hydraulic impact rotating the jumbolter crashing rock-soil system based on LS-DYNA. Analysed the effect of brokering rocks when drill moving forward, providing theoretical basis for impact characteristics research. Copyright © 2016 American Scientific Publishers All rights reserved.

Yang Y.,Xian Aeronautical University | Wang B.,Chang'an University | Liu Y.,Chang'an University
Journal of the Balkan Tribological Association | Year: 2016

Cameras based on the 1394b interface have been widely used. In this paper, we designed a real-time image acquisition and display system based on FPGA, which can directly display the camera's image on a LCD screen. The developed device, that we designed, is not the traditional form of camera image acquisition but customised, miniaturised, portable and programmable. In this article, we describe in details the system architecture of the device. A VerilogHDL hardware description language is applied in FPGA programming, which are under the Quartus 12 development platform. The experiments show that the embedded system can complete the acquisition on real-time display of the 1394b interface camera. The system is mainly used for image acquisition and display, which required real-time, stability, miniaturisation, and other special scenes.

Wu Y.,Xian Aeronautical University
Agro Food Industry Hi-Tech | Year: 2017

With the advancement of science and technology, artificial neural network has been proposed for the financial price of foreign exchange market and other aspects. Then, the development of artificial neural network technology has made the neural network widely used and demonstrated its powerful ability. In this paper, through the research on the application of artificial neural network in communication signal processing, the neural network model of the communication signal in the air pollution was successfully established.

Wang X.,Xian Aeronautical University
Agro Food Industry Hi-Tech | Year: 2017

As an indispensable factor of economic development, environmental factors have been paid more and more attention in the rapid economic development. In this paper, the relationship between environment and economic development in Shaanxi Province was studied. Dea clustering analysis model was established. The coordinated development of economy and environment in Shaanxi Province was quantitatively calculated. Based on the analysis results, Shaanxi Province should adjust the structure of industrial development to develop economy vigorously under the premise of ensuring the overall environmental quality, and discuss the measures and countermeasures to promote the coordination of environment and economy in Shaanxi Province.

With the development of computer information technology and multimedia Internet technology, human beings have entered a new era of knowledge and network. Education information construction is an important way for the modernization of education, in this paper, the author research on influence of multimedia network teaching platform and effective interaction on physical education curriculum. For the necessity of multimedia and network assisted instruction, 68.57% teachers think that multimedia teaching is very important, and it is necessary means of physical education teaching. Multimedia network teaching platform can also integrate the latest sports information resources, students can watch all kinds of large-scale sports events by online video. © 2016 SERSC.

Wang W.,Xian Aeronautical University
Chemical Engineering Transactions | Year: 2017

Through the internal analysis of excitation vibration source and vibration transfer path of the piston pump, this paper puts forward that the final receptor of the plunger pump is the case, introduces the vibration harmonic response analysis, and derives the mathematical expression of the vibration harmonic response analysis. This study establishes a finite element model of the plunger pump, and makes modal analysis; according to the results of modal analysis, make vibration harmonic response analysis of the case, and determine the modal frequency that has the largest impact on pump shell structure dynamic performance; finally, finds out the region where the vibration is severe under the normal working state of axial piston pump. The research result provides a theoretical basis for the analysis and optimization of the axial piston pump's vibration test and analysis, and provides a new idea and method for the research on the vibration noise reduction technology of axial piston pump. Copyright © 2017, AIDIC Servizi S.r.l.

Wang C.,Xian Aeronautical University
Revista de la Facultad de Ingenieria | Year: 2017

GPRS perfectly combines the data communication technology and mobile communication technology, which can make many users at the same time use channel resources, improving the utilization rate of wireless resources. In this paper, the author studies on the system design of wireless data transmission based on GPRS and ARM. The study shows that the whole system is composed of monitoring terminal, including detectors, a data transmission module, GPRS wireless access and monitoring center, which is stable, reliable and of low cost and can meet the actual needs of wireless data transmission. © 2017 Universidad Central de Venezuela.

Deng L.,Xian Aeronautical University
Boletin Tecnico/Technical Bulletin | Year: 2017

In order to improve the security of NC system, and to timely monitor the working state of the system, aiming at a variety of possible connections in the system fault, and based on the analysis of the general structure and working principle of NC system, through the acquisition system in the position and torque monitoring signal, we use Gauss function as the kernel function, which can realize the decision function of the diagnosis of fault. In order to establish the spatial error prediction model of CNC machine tools, we propose a spatial error identification and compensation method based on support vector machine (SVM). The parameters of least square support vector machine (SVM) are optimized by training and learning, and the spatial error identification and compensation experiment is carried out on a CNC milling machine by using the method of laser vector step diagonal. It is difficult to establish an accurate mathematical model of a complex system. This paper describes how to use fuzzy set theory to determine the fuzzy model of the system from the input and output measurements. In this paper, the optimization algorithm is introduced into the definition of the membership function. The experimental results prove that the proposed methodology can obtain the better performance as compared with the other state-of-art algorithms.

Wang X.-Y.,Xian Aeronautical University
International Journal of Control and Automation | Year: 2016

This paper found the deficiency of classical Z-N method in optimization of PID parameters, proposed the intelligent optimization algorithm of PID parameters. The stimulation and experiment showed that the PID parameters getting from this algorithm are efficient, accurate and speedy. This paper used algorithm for hydraulic control system of jumbolter. The stimulation and experiment showed that when peak oil pressure of relief chamber is changed, optimum algorithm will find suitable and based on MAX power requirement to change displacement of relief surface, which lead to changing displacement of impact piston, at the same time, it will change the impact power and frequency of impactor, and realize impactor auto change working parameters based on the different situation under suitable parameters and MAX power working condition. The experiments show that it has a certain reference value for other control objects and control process. © 2016 SERSC.

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