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Burmester's theory
Burmester theory is named after Ludwig Burmester (1840–1927). Burmester introduced geometric techniques for synthesis of linkages in the late 19th century.〔Hartenberg, R. S., and J. Denavit. Kinematic Synthesis of Linkages. New York: McGraw-Hill, 1964 (on-line through KMODDL )〕 His approach was to compute the geometric constraints of the linkage directly from the inventor's desired movement for a floating link. From this point of view a four-bar linkage is a floating link that has two points constrained to lie on two circles.
Burmester began with a set of locations, often called ''poses'', for the floating link, which are viewed as snapshots of the constrained movement of this floating link in the device that is to be designed. The design of a crank for the linkage now becomes finding a point in the moving floating link that when viewed in each of these specified positions has a trajectory that lies on a circle. The dimension of the crank is the distance from the point in the floating link, called the circling point, to the center of the circle it travels on, called the center point.〔Burmester,L., Lehrbuch der Kinematik, Verlag Von Arthur Felix, Leipzig, Germany, 1886.〕 Two cranks designed in this way form the desired four-bar linkage.
This formulation of the mathematical synthesis of a four-bar linkage and the solution to the resulting equations is known as Burmester Theory.〔Suh, C. H., and Radcliffe, C. W., Kinematics and Mechanism Design, John Wiley and Sons, New York, 1978.〕〔Sandor, G.N., and Erdman, A.G., 1984, Advanced Mechanism Design: Analysis and Synthesis, Vol. 2. Prentice-Hall, Englewood Cliffs, NJ.〕〔Hunt, K. H., Kinematic Geometry of Mechanisms, Oxford Engineering Science Series, 1979〕 The approach has been generalized to the synthesis of spherical and spatial mechanisms.〔( J. M. McCarthy and G. S. Soh, Geometric Design of Linkages, 2nd Edition, Springer 2010 )〕
== Finite position synthesis ==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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