Table 5 MPSO and PSO parameter settings for the new model.

From: Prediction of frequency response of sub-frame bushing and study of high-order fractional derivative viscoelastic model

Algorithm

Parameters

Values

PSO

Particle dimensions

6

n

50

\([{x}_{(1-4)min} , {x}_{(1-4)max}]\)

[0,500]

\([{x}_{(4-6)min} , {x}_{(4-6)max}]\)

\([\text{0,1}]\)

\(w\)

1.2

\({c}_{1}\)

1.5

\({c}_{2}\)

1.5

\([{v}_{(1-4)min} , {v}_{(1-4)max}]\)

[-50,50]

\([{v}_{(4-6)min} , {v}_{(4-6)max}]\)

\([-\text{1,1}]\)

MPSO

\({c}_{3}\)

1.5

Crossover probability

0.8

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