18.6.
Proell Governor
The Proell governor has the balls fixed at B and C
to the extension of the links DF and EG, as
shown in Fig.The arms FP and GQ are pivoted at P and Q
respectively.
Consider the
equilibrium of the forces on one-half of the governor as shown in Fig. The instantaneous centre (I) lies on the intersection of the line PF
produced and the line from D drawn perpendicualr to the spindle axis.
The prependicular B M is drawn on ID.
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