Identification of Wiener and Hammerstein Systems with Rate Saturation

被引:0
作者
Yong, A. Y. K. [1 ]
Tan, A. H. [1 ]
Cham, C. L. [1 ]
机构
[1] Multimedia Univ, Fac Engn, Cyberjaya 63100, Malaysia
来源
2018 IEEE INTERNATIONAL CONFERENCE ON AUTOMATIC CONTROL AND INTELLIGENT SYSTEMS (I2CACIS) | 2018年
关键词
identification; Wiener systems; Hammerstein systems; rate saturation;
D O I
暂无
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
This paper proposes the use of the coherence function for distinguishing between a Wiener structure and a Hammerstein structure for systems with rate saturation nonlinearity. This is an important extension in the application of the coherence function from the usual case of static nonlinearity to cover dynamic nonlinearity. The test capitalizes on the same set of data generated when estimating the best linear approximation of the system. The identification of the system parameters through the best linear approximation is also analyzed in terms of the sensitivity and convergence properties. The effectiveness of the approach is illustrated through simulations. The results show that the proposed approach combining the structure identification and parameter estimation outperforms an existing method.
引用
收藏
页码:1 / 6
页数:6
相关论文
共 16 条
[1]   Identification of linear systems with hard input nonlinearities of known structure [J].
Bai, EW .
AUTOMATICA, 2002, 38 (05) :853-860
[2]  
Dobrowiecki T., 2002, P 19 IEEE INSTR MEAS, P8810
[3]   Linear approximations of nonlinear FIR systems for separable input processes [J].
Enqvist, M ;
Ljung, L .
AUTOMATICA, 2005, 41 (03) :459-473
[4]   Frequency identification of nonparametric Wiener systems containing backlash nonlinearities [J].
Giri, F. ;
Rochdi, Y. ;
Radouane, A. ;
Brouri, A. ;
Chaoui, F. Z. .
AUTOMATICA, 2013, 49 (01) :124-137
[5]  
Giri F, 2010, LECT NOTES CONTR INF, V404, P1, DOI 10.1007/978-1-84996-513-2
[6]  
Han Y, 2011, IEEE DECIS CONTR P, P5774, DOI 10.1109/CDC.2011.6160473
[7]  
Pintelon Rik, 2012, System identification: a frequency domain approach
[8]   Frequency response function measurements in the presence of nonlinear distortions [J].
Schoukens, J ;
Pintelon, R ;
Rolain, Y ;
Dobrowiecki, T .
AUTOMATICA, 2001, 37 (06) :939-946
[9]   Identification of Wiener-Hammerstein systems by a nonparametric separation of the best linear approximation [J].
Schoukens, Maarten ;
Pintelon, Rik ;
Rolain, Yves .
AUTOMATICA, 2014, 50 (02) :628-634
[10]   Identification of Wiener-Hammerstein models using linear interpolation in the frequency domain (LIFRED) [J].
Tan, AH ;
Godfrey, K .
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, 2002, 51 (03) :509-521