http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
A Study on Parallel Force/Position Control Applied to Hybrid Electro-Hydrostatic Actuators
Dinh Quang Truong1,Ahn Kyoung Kwan 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
Hydraulic power systems and actuators play an important role in modern industry. In order to improve the control performance of electro-hydrostatic actuator (EHA), the aim of this paper is to propose a novel parallel control strategy named parallel self tuning Quantitative Feedback Theory (PSTQFT) to apply to control force and position of a new kind of hydraulic experimental system named electro-hydrostatic load simulator (EHLS). The PSTQFT controller is designed based on QFT technique for both the force and position control of the EHLS. Then the parameters of the PSTQFT force and position controller are automatically tuned online to minimize the system error by using gradient descent method and speed up convergence. Experiments are carried out to evaluate the effectiveness of the proposed parallel force and position control method applied to the EHLS system.
Theoretical investigation of a variable displacement vane-type oil pump
Truong, Dinh Quang,Ahn, Kyoung Kwan,Trung, Nguyen Thanh,Lee, Jae Shin SAGE Publications 2013 Proceedings of the Institution of Mechanical Engin Vol.227 No.3
<P>Variable displacement vane-type oil pumps represent one of the most innovative pump types for industrial applications, especially for engine lubrication systems. This article deals with a mathematical modeling method for theoretical performance investigation of a typical variable displacement vane-type oil pump. This theoretical model is based on the pump geometric design and dynamic analyses. It can be considered as a generation step for a deeper understanding of the pump operation as well as for effectively implementing the pump control mechanisms to satisfy the urgent demands of engine lubrication systems. The developed theoretical pump model is finally illustrated by numerical simulations.</P>
Truong, Quang-Trung,Pokharel, Pashupati,Song, Gwang Seok,Lee, Dai-Soo American Scientific Publishers 2012 Journal of Nanoscience and Nanotechnology Vol.12 No.5
<P>A new method for the preparation of graphene nanoplatelets (GNP) from graphite intercalation compounds (GICs) was investigated. Donor-type ternary GICs of natural graphites, lithium ions and tetrahydrofurane (NG-Li-THF) were synthesized via a solution process, with the lithium ions in the GICs then exchanged with different tetra alkyl ammonium cations to expand the interlayer distance (d-spacing) of these GICs. Microwave irradiation of these GICs resulted in the exfoliation of GICs, forming so-called 'worm-like exfoliated graphites.' Sonication of the worm-like exfoliated graphites in acetone resulted in GNPs with different aspect ratios. Powder X-ray diffractometry, scanning electron microscopy and transmission electron microscopy were employed to characterize the GICs and GNPs. It was found that the ion-exchange of NG-Li-THF increased the volume expansion ratios, and the molecular structure of the tetra alkyl ammonium cations affected the aspect ratios of the GNPs after exfoliation.</P>
Truong, Dinh Quang,Ahn, Kyoung Kwan,Trung, Nguyen Thanh,Lee, Jae Shin SAGE Publications 2013 Proceedings of the Institution of Mechanical Engin Vol.227 No.10
<P>Variable-displacement vane-type oil pumps represent one of the most innovative pump types for industrial applications, especially for engine lubrication systems. The aim of this paper is to develop a complete and accurate mathematical model for a typical variable-displacement vane-type oil pump to investigate its working performance. First, the detailed theoretical model was built on the basis of pump geometric design and dynamic analyses. Next, numerical simulations with the constructed model and experiments on the actual pump system were carried out to analyse the main power loss factors in order to develop the complete model for high modelling accuracy. The estimated pump performance using the complete pump model was finally verified by numerical simulations in comparison with practical tests.</P>
Development of an Electronically Controlled Variable Displacement Vane Pump for Engine Lubrication
Truong, Dinh Quang,Truong, Bui Ngoc Minh,Ahn, Kyoung Kwan,Lee, Jae Shin Korean Society for Precision Engineering 2015 International Journal of Precision Engineering and Vol.16 No.9
Lubrication is one of the most important factors in developing internal combustion engines. And vane pumps are known as potential choices for conducting the engine lubrication systems. To better optimize the lubrication performance, an electronically controlled variable displacement vane pump developed from a typical vane pump is newly introduced in this paper. Firstly, the concept and methodology to design properly an electric actuator to provide an additionally degree of pump control by regulating the pump displacement is carefully considered. Secondly, a control logic is developed to manage the operation of the actuator and subsequently, smoothly varying the pump output in order to satisfy any given lubrication profile. Finally, test rigs are setup to investigate the performances of the fabricated actuator and pump prototype. Practical tests are performed to evaluate the effectiveness of the newly pump design over the typical one.
( Quang Lam Truong ),( Van Tan Do ),( Tae-wook Hahn ) 대한인수공통전염병학회 2016 창립총회 및 학술대회 초록집 Vol.2016 No.1
Introduction: Canine brucellosis, caused by Brucella canis, is worldwide bacterial disease that affects dogs has been shown to constitute a risk for humans. However, there has been little research conducted on the development of vaccine against canine brucellosis. Unfortunately, efforts to develop an effective vaccine against B. canis have been unsuccessful to date. Consequently, the task for development of potential vaccines for control and eradication of canine brucellosis is of great importance. In our previous investigations, we have identified gshB gene in B. canis using transposon mutagenesis that required for macrophage survival and virulence in mice. In an effort to develop safe and effective vaccine, we constructed gshB gene-deletion mutant in virulent B. canis strain 26 (BC26), and described the effect of these deletions on virulence and protective immunity in mice. Methods: Gene-deletion (Δ) of gshB gene in BC26 was constructed and named as BC26Δgsh ::KM. To complement the BC26Δgsh ::KM mutant, the intact copy of gshB gene including the flanking DNA regions was cloned into the broad host range plasmid pBBR1-MCS4. The mutant was evaluated for virulence in RAW264.7 and HeLa cells and BALB/c mice, and for protective immunity against BC26 challenge. Immune response were evaluated using several parameters IgG, IgG1, IgG2a, IFN-γ and IL-10. Results: Deletion of gshB gene leads to significant attenuation of B. canis virulence either in vitro and in vivo. The BC26Δ gsh ::KM mutant was found to be more sensitive to oxidative stress, and virtually incapable of intracellular replication in both RAW264.7 and the HeLa cells. The virulence of mutant at either dose 10<sup>6</sup> or 10<sup>8</sup> CFU was highly attenuated in BALB/c mice. Mice inoculated parental BC26 strain induced splenomegaly as a consequence of inflammatory responses but not in mice inoculated with mutant. The complementation of BC26Δgsh ::KM mutant restored their ability to survive in vitro and in vivo to a level comparable with that of wild type. Importantly, the attenuation of in vitro and in vivo growth did not impair the ability of this mutant to confer protective immunity in mice against challenge with virulent BC26. Vaccination of mice with mutant induced strong Th1-type biased immune response, and provided significantly better protection against challenge with virulent BC26 than with either inactivated B. canis vaccine or the strain RB51 vaccine. Conclusion: This finding indicates that the gshB gene plays important role in the virulence of B. canis . These results suggest that BC26Δgsh ::KM mutant could be ideal live attenuated vaccine candidates and deserves further evaluations in animals for vaccine development.
A Novel Infrastructure Design of Industrial Autonomous System
Quang Thinh Truong,Ha Quang Thinh Ngo,Thanh Phuong Nguyen,Hung Nguyen,Won-Ho Kim 한국지능시스템학회 2019 INTERNATIONAL JOURNAL of FUZZY LOGIC and INTELLIGE Vol.19 No.2
In this era, the integrated technologies in a unit bring huge benefits for customers. In this paper, a novel design of structure for autonomous system is illustrated. It is superior by combining the specifications of various types in commercial market. As a result, numerous advantages of systems are converged into unified unit. The design of autonomous platform consists of hardware components and infrastructure. Later, the modeling of autonomous system is simulated on computer to fit with proposed design. The implementation of control scheme into model is to drive autonomous system to complete mission. From simulation results, it can be seen that the proposed strategy is feasible, effective and capable in reality.