Nonsmooth Recursive Identification of Sandwich Systems with Backlash-Like Hysteresis

作者：Dong, Ruili; Tan, Yonghong^*; Chen, Hui; Xie, Yangqiu

来源：Journal of Applied Mathematics, 2012, 457603.

DOI：10.1155/2012/457603

• DYNAMIC-SYSTEMS
• HAMMERSTEIN SYSTEMS
• NEURAL-NETWORKS
• LINEAR-SYSTEMS
• NONLINEARITIES

A recursive gradient identification algorithm based on the bundle method for sandwich systems with backlash-like hysteresis is presented in this paper. In this method, a dynamic parameter estimation scheme based on a subgradient is developed to handle the nonsmooth problem caused by the backlash embedded in the system. The search direction of the algorithm is estimated based on the so-called bundle method. Then, the convergence of the algorithm is discussed. After that, simulation results on a nonsmooth sandwich system are presented to validate the proposed estimation algorithm. Finally, the application of the proposed method to an X-Y moving positioning stage is illustrated.

• 出版日期2012
• 单位西安电子科技大学; 上海师范大学; 东南大学