Journal of Jilin University(Engineering and Technology Edition) ›› 2022, Vol. 52 ›› Issue (4): 764-772.doi: 10.13229/j.cnki.jdxbgxb20200887

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Parameter identification of magnetorheological damper model with modified seagull optimization algorithm

Wen-ku SHI(),Shu-guang ZHANG,You-kun ZHANG(),Zhi-yong CHEN,Yi-fei JIANG,Bin-bin LIN   

  1. State Key Laboratory of Automotive Simulation and Control,Jilin University,Changchun 130022,China
  • Received:2020-07-12 Online:2022-04-01 Published:2022-04-20
  • Contact: You-kun ZHANG E-mail:shiwk@jlu.edu.cn;zhangyk@jlu.edu.cn

Abstract:

In this paper, a method is presented to identify parameters of Bouc-Wen hysteresis model of magnetorheological damper. Based on the new meta-heuristic algorithm—Seagull optimization algorithm, the model parameters describing the nonlinear mechanical properties of the magnetorheological damper were fitted and identified. The opposition-based learning model based on the principle of refraction was introduced to improve the problem of falling into local optimal of the seagull optimization algorithm. The calculation results of the parameter identification method are accurate, simple and robust. The relationship between the model parameters and the control current is established by fitting and calculating the test data of the magnetorheological damper under different operating conditions. A general model of the magnetorheological damper including the control current is established and provided an accurate mechanical model for semi-active seat suspension control system.

Key words: vehicle engineering, semi-active suspension, magnetorheological damper, parameter identification, meta-heuristic intelligent algorithm

CLC Number: 

  • U461.4

Fig.1

Experimental setup"

Table 1

Excitation condition of mechanical test"

频率/Hz幅值/mm
5101520
0.5
1
1.5
2
2.5
3
3.5
4
4.5-
5-
6--
7--
9---

Fig.2

Comparison of mechanical properties of MR damper under different working conditions"

Fig.3

Bouc-Wen model"

Fig.4

Migration and predation of seagulls"

Fig.5

Schematic diagram of lens imaging"

Fig.6

Comparison of calculation results between two algorithms"

Fig.7

Variation of parameters-α、γ and c0 in Bouc-Wen model"

Fig.8

Variation of parameters-β,k0,A and x0 in Bouc-Wen model"

Fig.9

Mechanical properties of Bouc-Wen model at different current"

Fig.10

Mechanical properties of Bouc-Wen model at different excitation condition"

Fig.11

Seat suspension model with single degree of freedom"

Table 2

Parameter meaning of seat suspension"

参数名称数值
Ms/kg座椅重量67
ks/(N·m-1悬架刚度78 000
cs/(N·m·s-1被动减振器阻尼系数942
Fd磁流变减振器阻尼力-
xs座椅上板位移-
xb激励位移-

Fig.12

Vibration control of semi-active seat suspension based on Bouc-went model"

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