Kinematics Research on PRP Industrial Manipulator with Cylindrical Coordinate

2012 ◽  
Vol 220-223 ◽  
pp. 1748-1751
Author(s):  
Ke Tao ◽  
Tian Shi Liu
Keyword(s):  
Coordinate Transformation ◽  
Theoretical Basis ◽  
Inverse Solution ◽  
Industrial Manipulator ◽  
Rotary Joint ◽  
Cylindrical Coordinate

Abstract: This paper mainly studies the problem of the movement of PRP cylindrical coordinate industrial manipulator. Based on the description of the manipulator position and gesture, the determination of coordinate of the rectilinear joint and rotary joint and the homogeneous coordinate transformation, the kinematical equation and its inverse solution can be deduced subsequently. It provides the theoretical basis for the following study.

Robot Kinematics—A Compact Analytic Inverse Solution for Velocities

1987 ◽  
Vol 109 (1) ◽  
pp. 42-49 ◽  
Author(s):  
K. H. Hunt
Keyword(s):  
Numerical Methods ◽  
Coordinate Transformation ◽  
Screw Theory ◽  
Inverse Solution ◽  
Robot Kinematics ◽  
Robot Arms ◽  
Kinematic Geometry ◽  
Serial Robot ◽  
Inverse Velocity

There are, it seems, several notions, widely but not universally accepted, that hamper the full velocity determination of serial robot arms: (a) that certain generally based rules must be rigorously followed to establish a configuration pattern for any particular robot; (b) that, when things get difficult, there is no alternative to numerical methods; (c) that little can be gained from carefully examining the relevance of certain fundamentals of kinematic geometry. The more usual serial arms can, however, be analyzed elegantly, but only when elementary screw theory is recognized as being both essential and ubiquitous. Then, with the aid of the coordinate transformation for screws, the inverse velocity problem can be simply formulated analytically. Certain other matters, such as closure determination and proximity to special configurations, are touched upon.

The Energy-Saving Optimization of the Organic Heat Transfer Material Heater

2012 ◽  
Vol 455-456 ◽  
pp. 284-288
Author(s):  
Wei Li Gu ◽  
Jian Xiang Liu
Keyword(s):  
Heat Transfer ◽  
Energy Saving ◽  
Flue Gas ◽  
Theoretical Basis ◽  
Operation Management ◽  
Exergy Loss ◽  
Irreversible Processes ◽  
Design Parameters ◽  
Gas Temperature

this paper studies the typical irreversible processes such as combustion and heat transfer with temperature difference based on the theory of thermodynamics, analyzes the influencing factors on exergy loss in irreversible processes, on the basis of this analysis, proposes the energy-saving optimization measures on design and operation management of the organic heat transfer material heater, and specially points out that in the design process, objective function can be constructed with the exergy loss as evaluation index to determine the outlet flue gas temperature of furnace and the flue gas temperature, and provides theoretical basis for the determination of design parameters.

Study on Changes of Total Flavonoid Content in Suaeda salsa in Different Months of Growing Season

2014 ◽  
Vol 926-930 ◽  
pp. 1028-1031
Author(s):  
Wei Fang Zhong ◽  
Yue Hong Wang ◽  
Hong Ying Liu ◽  
Jin Hua Feng
Keyword(s):  
Theoretical Basis ◽  
Growing Season ◽  
Total Flavonoid ◽  
Suaeda Salsa ◽  
Uv Spectrophotometry ◽  
Total Flavonoid Content ◽  
Flavonoid Content ◽  
Significant Difference

Objective To investigate the changes of total flavonoid content of Suaeda salsa in different months of growing season, from May to November. Methods UV spectrophotometry was used for determination of the total flavonoid. Results The content of total flavonoid in Suaeda salsa was highest in September (67.75 mg·g-1) and was lowest in May (11.4 mg·g-1).The content was found to increase from May to September, and to decrease from September to November. Conclusion There is significant difference between total flavonoid content in Suaeda salsa from different months, which can be used to provide theoretical basis for harvesting and processing of Suaeda salsa.

Triple-Photon Energy Absorptiometry in the Measurement of Bone Mineral

1988 ◽  
Vol 29 (4) ◽  
pp. 461-464 ◽  
Author(s):  
R. Jonson ◽  
B. Roos ◽  
T. Hansson
Keyword(s):  
Soft Tissue ◽  
Bone Mineral ◽  
Theoretical Basis ◽  
Mineral Content ◽  
Bone Diseases ◽  
Attenuation Coefficients ◽  
Metabolic Bone Diseases ◽  
Metabolic Bone ◽  
Mass Attenuation Coefficients

The feasibility of determination of bone mineral content using a triple-photon absorptiometric technique is presented. Using three different photon energies it is possible to correct the measured ‘bone mineral’ value for fat and lean soft tissue. The theoretical basis of the method, as well as the experimental determination of mass attenuation coefficients, is described. It is shown that the results are reproducible within 5 per cent, which means that the method could be of value in the management of metabolic bone diseases.

Design of Stealthy Devices Made of Metamaterials with Material Properties

2013 ◽  
Vol 661 ◽  
pp. 95-98 ◽  
Author(s):  
Ye Liu ◽  
Zhu Ying Li ◽  
Wang Zhou Zhang ◽  
Yu Hong Sun
Keyword(s):  
Material Properties ◽  
Coordinate Transformation ◽  
Plane Electromagnetic Wave ◽  
Electromagnetic Devices ◽  
Specific Distribution ◽  
Permittivity And Permeability ◽  
Permeability Distribution ◽  
Electromagnetic Characteristics ◽  
Forming Condition

Using the method of electromagnetic coordinate transformation, through determination of the relation of permittivity and permeability distribution in different spaces, the forming condition of electromagnetic stealthy cloak made of metamaterial is discussed. On the specific distribution of permittivity and permeability, finite element method is used to analyze the electromagnetic characteristics of stealthy cloak which is radiated by plane electromagnetic wave. And the cloak shows excellent stealthy characteristic in theory at certain frequency of the wave. The result shows that the artificial metamterials, which are not found in nature, have the ability of controlling the electromagnetic field and changing the transmission path of wave. Besides stealthy cloak, new electromagnetic devices such as transparent device and concentrator, which are made of metamaterials designed by the coordinate transformation, are preliminarily discussed. They all have excellent stealthy characteristics.

Research on Continuous Cooling Transformation Curve of a C-Si-Mn Steel

2014 ◽  
Vol 556-562 ◽  
pp. 404-407 ◽  
Author(s):  
Zhang Wei Hu ◽  
Guang Xu ◽  
Chen Zhang ◽  
Hai Jiang Hu
Keyword(s):  
Heat Treatment ◽  
Cooling Rate ◽  
Transformation Temperature ◽  
Theoretical Basis ◽  
Treatment Technology ◽  
Heat Treatment Technology ◽  
Cct Curve ◽  
Transformation Curve ◽  
Mn Steel

The CCT curve of a C-Si-Mn steel was investigated. The hot simulation tests at different cooling rates were conducted on Gleeble-1500 simulator and microstructures were observed. Based on transformation temperatures recorded by dilation curves and microstructures, the CCT curve diagram for tested steel was plotted. The effects of cooling rate on microstructure and transformation temperature were studied. The results provide the theoretical basis for determination of hot processing and heat treatment technology of C-Si-Mn steels.

scholarly journals Metabolic control analysis using transient metabolite concentrations. Determination of metabolite concentration control coefficients

1992 ◽  
Vol 285 (3) ◽  
pp. 965-972 ◽  
Author(s):  
J Delgado ◽  
J C Liao
Keyword(s):  
Theoretical Basis ◽  
Metabolic Control Analysis ◽  
Metabolite Concentration ◽  
Quasi Equilibrium ◽  
Control Analysis ◽  
Algebraic Equations ◽  
Metabolite Concentrations ◽  
Flux Control Coefficients ◽  
Control Coefficients

The methodology previously developed for determining the Flux Control Coefficients [Delgado & Liao (1992) Biochem. J. 282, 919-927] is extended to the calculation of metabolite Concentration Control Coefficients. It is shown that the transient metabolite concentrations are related by a few algebraic equations, attributed to mass balance, stoichiometric constraints, quasi-equilibrium or quasi-steady states, and kinetic regulations. The coefficients in these relations can be estimated using linear regression, and can be used to calculate the Control Coefficients. The theoretical basis and two examples are discussed. Although the methodology is derived based on the linear approximation of enzyme kinetics, it yields reasonably good estimates of the Control Coefficients for systems with non-linear kinetics.

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