142lry3s2 20ry1s2 14142ry3s2 uty3s2 00 0 0 0 2828 0

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Unformatted text preview: ing from connection n is the same than TSj,P coming from connection m. Expressing the equality between all the expressions of TSj,P is called “unification”. So, in set-up Sj, for positioning connection n and m: Pos[n] = Pos[m] = TSj,P = TSj,HkSj + THkSj,Pi − TP,Pi For each connection, the link torsor includes parameters determined (lr or lt) and undetermined (Ulr or Ult). The “unification” allows establishing the relations between the undetermined parameters and the determined one. Moreover, if the positioning is over-constrained, the “unification” gives the compatibility equations between the 184 F. Villeneuve and F. Vignat determined parameters. These relations are obtained using a Gauss Pivot method as described in [Thiebaut, 2001]. 3.2. Second step: determining the “driving link parameters” The part-holders give generally a over-constrained positioning. In such a case, a hierarchical order (primary, secondary …) is defined between the different set of connections. This hierarchy allows determining the main link parameters defining the positioning...
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This note was uploaded on 08/03/2010 for the course DD 1234 taught by Professor Zczxc during the Spring '10 term at Magnolia Bible.

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