TY - JOUR
T1 - Forecast iterative learning control with forgetting factor and its application in valve-controlled asymmetric cylinder
AU - Wang, Shoukun
AU - Peng, Jianmin
PY - 2014/5/20
Y1 - 2014/5/20
N2 - Valve-controlled asymmetric cylinder belongs to typical nonlinear and time-varying system at elastic load, in order to eliminate oscillation result from traditional PD-type iterative learning control, a kind of forecast iterative learning control with a forgetting factor is designed. The system mathematical model is built, and the performance characteristics of valve-controlled asymmetric cylinder system are analyzed. The fundamental of iterative learning control is introduced, the problems of traditional PD-type algorithm are analyzed; a forgetting factor is added in the iterative learning control to inhibit the oscillation, the control effect by different forgetting factor value is analyzed by simulating, a part of forecast system given is increased to improve the system accuracy, because forgetting factor lower the system performance. Both simulations and experiments show that, in the valve-controlled asymmetric cylinder system, using forecast iterative learning control with a forgetting factor will overcome oscillation well with a forgetting factor, and can improve accuracy by forecast iterative.
AB - Valve-controlled asymmetric cylinder belongs to typical nonlinear and time-varying system at elastic load, in order to eliminate oscillation result from traditional PD-type iterative learning control, a kind of forecast iterative learning control with a forgetting factor is designed. The system mathematical model is built, and the performance characteristics of valve-controlled asymmetric cylinder system are analyzed. The fundamental of iterative learning control is introduced, the problems of traditional PD-type algorithm are analyzed; a forgetting factor is added in the iterative learning control to inhibit the oscillation, the control effect by different forgetting factor value is analyzed by simulating, a part of forecast system given is increased to improve the system accuracy, because forgetting factor lower the system performance. Both simulations and experiments show that, in the valve-controlled asymmetric cylinder system, using forecast iterative learning control with a forgetting factor will overcome oscillation well with a forgetting factor, and can improve accuracy by forecast iterative.
KW - Elastic load
KW - Forecast iterative
KW - Forgetting factor
KW - Iterative learning control
KW - Valve-controlled asymmetric cylinder
UR - http://www.scopus.com/inward/record.url?scp=84904724055&partnerID=8YFLogxK
U2 - 10.3901/JME.2014.10.191
DO - 10.3901/JME.2014.10.191
M3 - Article
AN - SCOPUS:84904724055
SN - 0577-6686
VL - 50
SP - 191
EP - 198
JO - Jixie Gongcheng Xuebao/Chinese Journal of Mechanical Engineering
JF - Jixie Gongcheng Xuebao/Chinese Journal of Mechanical Engineering
IS - 10
ER -