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Recursive Identification of Sandwich Systems With Dead Zone and Application

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3 Author(s)
Yonghong Tan ; Coll. of Mech. & Electron. Eng., Shanghai Normal Univ., Shanghai ; Ruili Dong ; Ruoyu Li

In this paper, a recursive identification approach for a class of nonlinear systems called sandwich systems with the dead zone is proposed. In order to handle the effect of the dead zone, several switch functions are introduced into the model based on the so-called key term separation principle. Hence, the sandwich systems with the dead zone can be transformed into a special model where all the model parameters are separated. Then, a modified recursive general identification algorithm (MRGIA) is applied to the parameter-estimations of the obtained model. Moreover, the convergence of the algorithm for such systems will be discussed. Finally, a simulation example is presented, and the experimental results on an X-Y moving positioning stage are illustrated.

Published in:

Control Systems Technology, IEEE Transactions on  (Volume:17 ,  Issue: 4 )