Research Article

Study on the Resonant Suppression of Electrohydraulic Servo Shaking Table of a 2-Mass Dynamic System

Table 1

Parameters based on the hydraulic system power mechanism.

Piston diameter D (mm)50
Piston rod diameter d (mm)36
Piston effective area A (m2)945.6 × 10−6
Stroke of hydraulic cylinder L (mm)±200
Equivalent volume modulus of elasticity βe (MPa)690
Pipe diameter d1 (m)0.01
Equivalent mass of load inertia mp (kg)100
Elastic load quality mL (kg)100
Hydraulic spring stiffness Kh (N/m)6.53 × 106
Servo valve gain Kq (m3/s/A)2 × 10−2
Flow-pressure coefficient Kce (m3/s/Pa)3 × 10−12
Viscous damping coefficient of the piston and load BL (N/(m/s))80