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Table 3 Correction effect meii of correction coefficient cpii on main diagonal elements of stiffness matrix

From: Improved Stiffness Modeling for An Exechon-Like Parallel Kinematic Machine (PKM) and Its Application

  Correction effect Mean Stdev Max Min Distribution
[0.9, 1] [0.6, 0.9) [0, 0.6)
Orthogonal experiment me11 0.96 0.01 0.98 0.95 49 0 0
me22 0.90 0.12 1.00 0.53 36 12 1
me33 0.98 0.01 1.00 0.97 49 0 0
me44 1.00 0.00 1.00 1.00 49 0 0
me55 1.00 0.00 1.00 1.00 49 0 0
me66 1.00 0.00 1.00 0.99 49 0 0
Verification experiment me11 0.83 0.12 1.00 0.37 3 20 2
me22 0.69 0.16 0.91 0.32 1 18 6
me33 0.68 0.07 0.73 0.44 0 23 2
me44 0.99 0.00 1.00 0.99 25 0 0
me55 0.99 0.00 0.99 0.98 25 0 0
me66 0.93 0.02 0.98 0.86 24 1 0