Parametric Vibration Analysis of a Six-Degree-of-Freedom Electro-Hydraulic Stewart Platform

Table 1

Physical parameters of the electro-hydraulic Stewart platform (Unit: Si).

Name	Symbol	Value
Top platform radius	R	2
Thickness of top platform	D	0.2
Quality of top platform	m	20
Inertia of the top platform about the X axis	Ix	20.07
Inertia of the top platform about the Y axis	Iy	20.07
Inertia of top platform about the Z axis	Iz	40
Universal joint at position 1	b1
Universal joint at position 2	b2
Universal joint at position 3	b3
Universal joint at position 4	b4
Universal joint at position 5	b5
Universal joint at position 6	b6
Ball hinge position 1	a1
Ball hinge position 2	a2
Ball hinge position 3	a3
Ball hinge position 4	a4
Ball hinge position 5	a5
Ball hinge position 6	a6