Pan Zhihua University

Pan, China

Pan Zhihua University

Pan, China
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Cao Z.,University of Science and Technology Beijing | Cao Z.,Pan Zhihua University | Qin M.,University of Science and Technology Beijing | Chu A.,Hunan University of Science and Technology | And 3 more authors.
Materials Research Bulletin | Year: 2014

Chromium nitride (CrN) nanoparticles were synthesized by nitridation of a glucose-assisted combustion synthesized precursor. Effects of glucose on the size and morphology of the precursors as well as synthesized CrN nanoparticles were studied. The results indicated that the precursor, synthesized from glucose (0.025 mol), was comprised of paper-thin flaky particles with high specific surface area (34 m2/g). Moreover, the product from glucose nitrided at 800 C for 6 h exhibited single-crystalline structure of each cubic CrN nanocrystal, and consisted of well-distributed particles with an average size of about 20-50 nm. On the contrary, the product without glucose nitrided at 800 C was agglomerated. Glucose was found to induce homogeneous and well-distributed nanoparticles.


PubMed | University of Science and Technology Beijing and Pan Zhihua University
Type: | Journal: Journal of colloid and interface science | Year: 2016

Mesoporous graphite encapsulated Fe


Gong J.-C.,Pan zhihua University | Xie Y.-C.,Pan zhihua University
Advanced Materials Research | Year: 2011

In this paper, it mainly researches control arithmetic of electro-hydraulic servo system. In a tele-operated master-slave control system, a Fuzzy PD control strategy is adapted. In order to obtain real time track control to system and improve dynamic and static characteristic of system, three control parameters of PD are optimized by Genetic Algorithm (GA). Experimental results are shown that the sense of force is produced on the joy stick and the operator is able to feel sensitively the reaction forces. Secondly, the novel control strategy and optimization fuzzy PD arithmetic has good track precision and improves master-slave track characteristic of displacement and force feedback characteristic. At the same time, it has rather strong self-adaptability and anti-jamming capability. © (2011) Trans Tech Publications.


Zhou C.L.,Pan Zhihua University | Yang R.,Pan Zhihua University | Tang X.Y.,Pan Zhihua University
Advanced Materials Research | Year: 2014

Prestressed concrete-filled square steel tube truss is the kind of truss whose upper chords and lower chords are respectively concrete-filled square steel tube and prestressed square steel tube. Four truss models as square steel tube truss, concrete-filled square steel tube truss, prestressed square steel tube truss and prestressed concrete-filled square steel tube truss were analysed by ANSYS, each of those truss models' span has three variations. The result shows that the bar sections' strength of square steel tube truss and concrete-filled square steel tube truss are far from reaching their design strength when the allowable values of deflection has reached l//400. Unlike the cases described above, when the bar sections' strength of prestressed square steel tube truss and prestressed concrete-filled square steel tube truss has reached their design strength, their load-bearing capacity is 1 or 1.5 times higher than those cases above and their deflection has not reached the allowable values. © (2014) Trans Tech Publications, Switzerland.


Fan X.,Pan Zhihua University
ICCASM 2010 - 2010 International Conference on Computer Application and System Modeling, Proceedings | Year: 2010

This article, through the research into cognitive style ,an important individual difference in foreign language study, explores how foreign language teaching should aim at cognitive style differences and implement personalized foreign language teaching strategy in the network and multimedia environment. Personalized foreign language teaching should comply with the learner's cognitive style, respect the differences, adopt network and multimedia technologies, and give personalized instruction of learning strategy , thus enable all the foreign language learners to become successful ones. The author proposes strategies for field independent and field dependent learners, strategies for cautious and impulse learners, and strategies for learners of visual , auditory and kinesthetic- style. © 2010 IEEE.


Tang Y.,Pan Zhihua University | Wu G.,Pan Zhihua University
Advanced Materials Research | Year: 2014

Half bridge switching power supply is a kind of form in the family. It has the characteristics of good voltage output, high efficiency, the simple circuit and so on. On the design of the half bridge switching power supply, the key and difficult point is the design of switch transformer. Taking the switch transformer of a half bridge switching power supply as the research object and based on the design requirements, this paper aims to realize the calculation of the coil turns and the selection of core in switching transformer. the design of switch transformer of the push-pull switch power supply has been completed by circuit simulation and implementation. © (2014) Trans Tech Publications, Switzerland.


Wu G.,Pan Zhihua University | Tang Y.,Pan Zhihua University
Applied Mechanics and Materials | Year: 2014

In this paper, after introducing the concept of far zone field, expression of the electric and magnetic field intensities of symmetrical center-fed dipole is derived based on structure of the array antenna by the electric field intensity formula of symmetrical center-fed dipole. When the electric field intensity of the array antenna is known, the direction function of the array antenna is obtained by concept of the primary pattern and array pattern, Finally, computer programming simulation is used to realize the visualization of the direction function of the primary pattern and array pattern. In this way, the accurate data and precise curve are obtained so the goal of direct-viewing analysis of the problems is achieved. © (2014) Trans Tech Publications, Switzerland.


Zeng J.,Pan Zhihua University
Advanced Materials Research | Year: 2014

Based on the theory and mathematical treatment for the photovoltaic cell, a simple and accurate PV array model of external characteristics is developed with PSIM. Output simulation results for different Temperature and Light intensity. The simulation results show that I-V and power simulation result of the Photovoltaic array model, and experimental result are in close agreement with each other. This verifies the accuracy and suitability of the developed PSIM model. © (2014) Trans Tech Publications, Switzerland.


Tang Y.,Pan Zhihua University | Wu G.,Pan Zhihua University
Applied Mechanics and Materials | Year: 2013

Switch power supply is a power supply of maintaining the stable output voltage by the use of modern electronic technology, controlling the time ratio(duty cycle) of on and off of switching transistors. Push-pull switch power supply is a form of switching power supply family, which is divided into an independent-excited push-pull switch power supply and self -excited push-pull switch power supply. This paper will put forward an design scheme of the independent-excited push-pull switch power supply based on the design requirements, and the driving integrated circuit selection according to the design scheme of the push-pull switch power, at the same time, the switching transistors and rectifier diode selection through the calculation. The number of turns on a switch transformer is calculated according to the input and output voltage. Considering the skin effect and the proximity effect, switch transformer winding method is selected and the power supply meets the requirements of design according to the saber2007 simulation and implementation. © (2013) Trans Tech Publications, Switzerland.


Wu G.,Pan Zhihua University | Tang Y.,Pan Zhihua University
Applied Mechanics and Materials | Year: 2013

the push-pull switch power is a kind of form in the family. It has the characteristics of good voltage output, high efficiency, the simple circuit and so on. On the design of the push-pull switch power supply, the key and difficult point is the design of switch transformer. Taking the switch transformer of a push-pull switching power supply as the research object and based on the design requirements, this paper aims to realize the calculation of the coil turns in switching transformer. Meanwhile, under the consideration of the skin effect and the proximity effect and the choices of switch transformer's wires and the methods of wires winding, the design of switch transformer of the push-pull switch power supply has been completed by circuit simulation and implementation. © (2013) Trans Tech Publications, Switzerland.

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