Modal and Natural Frequency Sensitivity Analysis of Electrohydraulic Stewart Platform

Table 1

Physical parameters of electrohydraulic Stewart platform (unit: Si).

Name	Symbol	Value
Upper platform radius	R	2
Thickness of upper platform	D	0.2
Quality of upper platform	M	20
Inertia of the upper platform about the X-axis	Ix	20.07
Inertia of the upper platform about the Y-axis	Iy	20.07
Inertia of upper platform about the Z-axis	Iz	40
Hook hinges at position 1	a1
Hook hinges at position 2	a2
Hook hinges at position 3	a3
Hook hinges at position 4	a4
Hook hinges at position 5	a5
Hook hinges at position 6	a6
Ball hinge at position 1	A1
Ball hinge at position 2	A2
Ball hinge at position 3	A3
Ball hinge at position 4	A4
Ball hinge at position 5	A5
Ball hinge at position 6	A6