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Table 2 Parameters of two-degree-of-freedom active mounting system

From: Principle and Control of Active Engine Mount Based on Magnetostrictive Actuator

Parameter

Value

1/4 engine mass me (kg)

50

1/4 sprung mass mb (kg)

300

Rubber spring stiffness km (kN/m)

180

Rubber spring damping bm (N·s/m)

50

Suspension stiffness ks (kN/m)

16

Suspension damping bs (N·s/m)

1000

Sampling interval T (s)

1×10−3

Target weight matrix L

[10000 0; 0 1]

Preprocessing weight matrix S

[1 1 −1 −1]

Mean of measurement noise \({{\varvec{r}}}_{\mathbf{k}}\)

[0; 0]

Variance matrix of measure noise \({{\varvec{R}}}_{\mathbf{k}}\)

[2×10−15 0; 0 5×10−6]

Fixed convergence factor \({\varvec{\lambda}}\)

7×10−4

Control factor \({\varvec{\gamma}}\)

1×10−4

Forgetting factor \({\varvec{b}}\)

0.99

LMS filter order N

32