Shenyang, China

Shenyang Ligong University

www.sylu.edu.cn
Shenyang, China

Shenyang Ligong University is a university in Shenyang, Liaoning, China under the provincial government.University campus is located in a new district of Hunnan New District. Wikipedia.

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Sun J.,Shenyang Ligong University | Wang G.,Shenyang Ligong University
Surface and Coatings Technology | Year: 2014

Cerium conversion coatings were prepared on AZ91D magnesium alloy by a cathodic electrochemical treatment. Scanning electron microscopy (SEM) coupled with energy dispersive X-ray spectroscopy (EDS), electrochemistry workstation and X-ray photoelectron spectroscopy (XPS) were used to characterize the compositions, micro-morphology, corrosion resistance and the oxidation state of cerium and oxygen elements of the coatings. The results showed that the conversion coatings presented an intact and uniform morphology when the cathodic current density was 0.20Adm-2, the temperature was 35°C and the treatment time was 2min. When the applied current densities were higher than 0.25Adm-2, the coatings showed a micro-cracked morphology. The better corrosion resistance of the cerium-based conversion coatings could be obtained when the current density was 0.20Adm-2 when tested in 3.5% NaCl (wt.) solution. There are Ce(IV) and Ce(III) oxidation states in the coating. © 2014 Elsevier B.V.


Wang Y.,Shenyang Ligong University
Applied Mechanics and Materials | Year: 2012

In the transmission system of drive axle, the gears' transmission performance of final drive and differential is the key to transmission system. Based on Automatic Dynamic Analysis of Mechanical System (ADAMS), the virtual gear meshing prototype of final drive and differential were established. Based on the Hertz elasticity impact theory, the contact forces between gears were built. The real-time dynamic simulation of gear meshing was achieved. The gears' transmission of final drive and differential in drive axle was simulated under limit conditions by imposing different torque in driving gear of final drive and differential gears. The curves of meshing force and angular speed of differential gears and driving gears of final drive are obtained. The theoretical reference is provided to the study of the dynamic characteristics in gear transmission system.


Sun D.,Shenyang Ligong University
2010 International Conference on Intelligent Computation Technology and Automation, ICICTA 2010 | Year: 2010

A sliding mode controller for induction motor (IM) is investigated in this paper. It features in very low flux and torque ripple. In order to guarantee electromagnetic torque and stator flux to track its reference signal strictly, the electromagnetic torque sliding mode variable and stator flux sliding mode variable were selected separately. Furthermore, a robust stator flux observer is designed for sliding mode direct torque controlled induction motor system. The design of state observer is based on regional pole assignment theory. The observer gain matrix is obtained by solving linear matrix inequality (LMI) using LMI Toolbox in MATLAB. Finally, the effectiveness and validity of the proposed control approach is verified by computer simulation results. © 2010 IEEE.


Liu D.,Shenyang Ligong University
International Journal of Digital Content Technology and its Applications | Year: 2011

In this paper, we investigate the multiple attribute decision making (MADM) problems for evaluating the E-commerce system security with uncertain information. Then, based on the traditional grey relational analysis (GRA) method, calculation steps for solving multiple attribute decision-making problems with completely known weight information are given. The degree of grey relation between every alternative and positive ideal solution is calculated. Then, a relative relational degree is defined to determine the ranking order of all alternatives by calculating the degree of grey relation to both the positive-ideal solution (PIS). Finally, an illustrative example is given.


Nanometer calcium titanate immobilized on Aluminum oxide (ACTO) was successfully prepared by the citrate acid sol-gel method and characterized using X-ray diffraction (XRD) and scanning electron microscopy (SEM). The adsorption capability of ACTO for Pb2+, Cd2+and Zn2+ from water was studied. Adsorption and elution were investigated under different conditions. The results show that nanometer calcium titanate could be immobilized on the aluminum oxide firmly, becoming a composite adsorbent. The Pb2+, Cd2+and Zn2+ were retained at pH 5-9, their adsorption capacities of ACTO were 124 mgg-1, 8.58 mgg -1 and 13.86 mgg-1, respectively. The adsorption agent can be regenerated by elution with 2 molL-1 HNO3. The adsorbent has a promising prospect in removal or enriching and separation of heavy metals in water. © (2011) Trans Tech Publications, Switzerland.


Wang T.,Shenyang Ligong University
Advances in Information Sciences and Service Sciences | Year: 2012

The product design process is the primary phase and the creative and challenging part in product lifecycle. The implementation effect of the follow-up manufacture process is directly influenced by design results that are also the major factor of controlling product cost. Along with increasing of product complexity, urging of market requirement and spreading of networked product development mode, product design theories and methods have attracted wide attention from academies and industries and become important research directions and application fields. In this paper, we investigate the multiple attribute group decision making (MAGDM) problems for evaluating the design of mechanical products with uncertain linguistic variables. We utilize the uncertain linguistic weighted harmonic mean (ULWHM) operator to aggregate the uncertain linguistic information corresponding to each alternative and get the overall value of the alternatives, then rank the alternatives and select the most desirable one(s) by using the formula of the degree of possibility for the comparison between two uncertain linguistic variables. Finally, a practical example for evaluating the design of mechanical products is used to illustrate the developed procedures.


Wang H.,Shenyang Ligong University
International Journal of Digital Content Technology and its Applications | Year: 2012

In this paper, we investigate the multiple attribute group decision making (MAGDM) problems for evaluating the security of wireless sensor network (WSN) with triangular fuzzy linguistic information. We utilize the triangular fuzzy linguistic weighted geometric (TFLWG) operator to aggregate the triangular fuzzy linguistic information corresponding to each alternative and get the overall value of the computer network systems, then rank the computer network systems and select the most desirable one(s) by using the formula of the degree of possibility for the comparison between two triangular fuzzy linguistic variables. Finally, an illustrative example for evaluating the security of wireless sensor network (WSN) is given to verify the developed approach and to demonstrate its practicality and effectiveness.


Liu Q.-Q.,Shenyang Ligong University
ICIC Express Letters | Year: 2011

This paper addresses the observer-based, dynamic state feedback stabilization problem for networked control systems (NCSs) with limited data rates over noisy communication channels. A dynamic, finite-level logarithmic quantization method is proposed. A lower bound of data rates of noisy channels, above which there exists a quantization, coding and control scheme to stabilize the unstable plant, is derived. An illustrative example is given to demonstrate the effectiveness of the proposed method.© 2011.


Yang X.,Shenyang Ligong University
International Journal of Advancements in Computing Technology | Year: 2012

Research on human recognition based on vision has got more and more attention recently, which contributes to the theoretical development of computer vision and pattern recognition, and has important meaning. This paper presents a human recognition method that based on sequence silhouette matching. First extracted the silhouette image of action sequence, then using sparse representation method extracted the feature, finally recognized the human using sparse function. Experience is done in WEIZMAN database and results show that the method has a high recognition rate.


Wang Y.,Shenyang Ligong University
International Journal of Advancements in Computing Technology | Year: 2012

The problem of software selection with triangular intuitionistic fuzzy information is the multiple attribute decision making (MADM) problems. In this paper, we investigate the multiple attribute decision making (MADM) problems for software selection with triangular intuitionistic fuzzy information. We utilize the triangular intuitionistic fuzzy ordered weighted geometric (FIFOWG) operator to aggregate the triangular intuitionistic fuzzy information corresponding to each alternative and get the overall value of the alternatives, then rank the alternatives and select the most desirable one(s). Finally, an illustrative example for software selection is given to verify the developed approach and to demonstrate its practicality and effectiveness.

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