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RESEARCH ON NEGOTIATION-BASED PARTNER SELECTION APPROACH

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Chinese Journal of Mechanical Engineering 2002年第1期15卷 15-21页

作者： Li Li Xue Jinsong Zhu Yunlong shenyang institute of automation，Chinese Academy of Science，shenyang 110016，China shenyang institute of automation Chinese Academy of Science Shenyang 110016

The key problem in the construction of virtual enterprises (VEs) is how toselect appropriate partners. The negotiation-based approach is proposed to support partner selectionin the construction of VEs. The negotiation model is discussed from three main aspectsrespectively, i.e., negotiation protocol, negotiation goal and negotiation decision-making *** the generic mathematical description of the negotiation model is formally presented. Finally, asimple example is used to validate the approach's availability.

关键词： Negotiation Partner selection Virtual enterprises

STUDY ON SENSOR-BASED CONTROL METHOD FOR HARMONIC DRIVE SYSTEM

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Chinese Journal of Mechanical Engineering 2000年第3期13卷 234-240页

作者： Tan Dalong, Qiu Zhicheng, Han Jianda (shenyang institute of automation, Chinese Academy of Sciences) 中科院沈阳自动化所辽宁沈阳

A new type of robust traje ctory tracking control for harmonic using joint torque sensor and joint acceleration sensor information is concerned *** torque sensor information is used to compensate the uncertainty of link and load parameters. Joint acceleration feedback control will enhace the robustness of the driving system, resist the dynamic uncertainties and disturbing torque acted on the joint axis within definite bandwidth, improve the joint tracking performance, and resist the vibration of the load side of the harmonic drive system. Experimental studies are carried out and comparison of several controllers , such as PD and sensor- based control, the experimental results clearly illustrate the effectiveness of the proposed methods.

关键词： Harmonic drive Acceleration Feedback control Vibration Disturbance Trajectory trackp

Study of Nozzle and Vent Locations on Die Casting Filling Process

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厦门大学学报（自然科学版） 2002年第S1期41卷 29-30页

作者： GUI Gang, NIE Yi-yong (shenyang institute of automation, Academia Sinica School of Graduate, Academia Sinica, shenyang 110016, China )

The casting nozzle location plays an important role in die casting. Improper location results in defects, such as cold shut, air cavity, shrinkage, etc. Therefore, it’s sure that the molten metal full fills the mould cavity before it solidifies. And, it’s to be wished that no vortex occur during the filling process, because the vortex is a main source that induces gas entrapment. To get the high quality and performance product, the inlet and outlet locations must be set properly. This paper, an optimal design problem of nozzle and vent locations, which is constrained by nonlinear partial differential equations and boundary and initial conditions, is introduced to describe the location selection on die casting filling process. By numerical simulation, one can compare the filling time, flow pattern and temperature field at different inlet and outlet locations, then choose the most proper locations.

关键词： casting nozzle location filling time optimal design temperature field

SELF-DEVELOPMENT IS THE PRIMARY TARGET IN INTERNA- TIONAL COOPERATION FOR A RESEARCH institute

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Bulletin of the Chinese Academy of Sciences 1996年第1期10卷 87-89页

作者： shenyang institute of automation, CAS

In the current context of reform, "open-door" and the initiation of the socialist market economy,one of the key aspects in our ceaseless exploration and practice is to promote international cooperation and academic exchange with foreign scholars as a supplementary means of our institute’s survival,development and winning against overseas competition.

关键词： SELF-DEVELOPMENT IS THE PRIMARY TARGET IN INTERNA TIONAL COOPERATION FOR A RESEARCH institute

Global asymptotic stability of cellular neural networks with multiple delays

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Progress in Natural Science:Materials International 2006年第2期16卷 163-168页

作者： WANG Zhanshan and ZHANG Huaguang ( Key Laboratory of Process Industry automation, Northeastern University, shenyang 110004, China Department of Information Engineering, shenyang Ligong University, shenyang 110168, China) [a]Key Laboratory of Process Industry automation Northeastern University Shenyang China [b]Department of Information Engineering Shenyang Ligong University Shenyang China

Global asymptotic stability (GAS) is discussed for cellular neural networks (CNN) with multiple time delays. Several criteria are proposed to ascertain the uniqueness and global asymptotic stability of the equilibrium point for the CNN with delays. These criteria can eliminate the difference between the neuronal excitatory and inhibitory effects. Two examples are presented to demonstrate the effectiveness of the criteria.

关键词： cellular neural networks global asymptotic stability multiple time delays.

MECHANICAL PROPERTIES IN AN INTERCRITICALLY HEAT-TREATED BAINITE-TRANSFORMED 2%Si STEEL

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Acta Metallurgica Sinica(English Letters) 2004年第5期17卷 725-731页

作者： Z. Li1,2) and D. Wu1)1) State Key Lab of Rolling and automation, Northeastern University, shenyang 110004, China2) institute of Aeronautical Engineering, shenyang 110034, China Lab. of Rolling Technol. Northeastern Univ. Shenyang 110004 China Inst. of Aeronautical Eng. Shenyang 110034 China

A significant amount of austenite can be retained by rapid cooling following intercritical annealing and holding at the bainite transformation range in steel with comparatively low carbon and silicon contents. Retained austenite is blocky and very fine and moderately stabilized due to C enrichment. The elongation and the strength-ductility balance of the steel can be enhanced considerably due to strain-induced martensite transformation and transformation-induced plasticity (TRIP) of retained austenite.

关键词： mechanical properties intercritical annealing retained austenite bainite transformation steel

PHASE　RELATIONSHIPS　IN　R－Fe　PSEUDOBINARY　SYSTEM　(R＝Dy0．65Tb0．25Pr0．1)

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Acta Metallurgica Sinica(English Letters) 1996年第2期9卷 109-115页

作者： WANG Bowen WU Changheng ZHUANG Yuzhi JIN Ximei(institute of Metal Research,Chinese Academy of Sciences,shenyang 110015,China)(shenyang institute of Technology,shenyang 110023,China) Inst of Metal Research Chinese Acad of Science Shenyang China

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关键词： rare earth-iron alloy phase relationship structure

RELATIONSHIP BETWEEN FRACTAL DIMENSION AND CYCLIC CREEP PROPERTIES OF ROTOR STEEL 34CrMoA

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Acta Metallurgica Sinica(English Letters) 1993年第3期6卷 193-196页

作者： YI Jianzhang shenyang institute of Aeronautical Engineering,shenyang,ChinaYANG Zhi’an ZHU Shijie WANG Zhongguang institute of Metal Research,Academia Sinica,shenyang,China lecturer,Department of Safety Engineering,shenyang institute of Aeronautical Engineering,shenyang 110031,China shenyang Inst of Aeronautical Engineering Shenyang China

Vertical section method has been used to measure the fractal dimension of cyclic creep frac- ture surfaces of rotor steel 34CrMoA at 550℃.The relationship between fractal dimension and cyclic creep properties has been *** fractal dimension is dependent upon the power product of minimum creep rate and rupture time,and satisfies the linear function with rupture strain.

关键词： cyclic creep fractal dimension creep property steel 34CrMoA

An omnidirectional mobile robot

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Science China(Information Sciences) 2011年第12期54卷 2651-2658页

作者： YE ChangLong 1,2 , MA ShuGen 2,3 & HUI Li 1 1 School of Mechatronics Engineering, shenyang Aerospace University, shenyang 110136, China 2 State Robotics Laboratory, shenyang institute of automation, shenyang 110016, China 3 Department of Robotics, Ritsumeikan University, Kusatsu 525-8577, Japan 1. School of Mechatronics Engineering Shenyang Aerospace University Shenyang 110136 China2. State Robotics Laboratory Shenyang Institute of Automation Shenyang 110016 China3. Department of Robotics Ritsumeikan University Kusatsu 525-8577 Japan

A novel omnidirectional wheeled mobile robot, mainly composed of three special wheeled structures-MY wheel, is developed in this paper. Based on the movement principle of sphere, the sphere of the special wheel is divided into contact part and non-contact part. The function of the omnidirectional wheel is realized utilizing the mutual complementarities of the two parts of the sphere. The passive rotational axes of two parts of the sphere are in staggered arrangement to each other at an angle of 45 degrees to realize continuous contact with the ground. At the same time, this structure also improves the strength of omnidirectional wheel. It is verified by the kinematic analysis and simulation of the wheeled mobile mechanism that the mechanism can achieve the omnidirectional movement. It is also proved by the movement experiment of the mobile robot that the omnidirectional mechanism can not only achieve the omnidirectional movements but also step over obstacles.

关键词： omnidirectional mobile robot mechanism design kinematics