控制理论与应用2012，Vol.29Issue(5)：555-563,9.
基于退化激励信号的含有迟滞的三明治系统辨识
Identification of sandwich systems with hysteresis based on degeneration inputs
谢扬球 1谭永红2
作者信息
- 1. 西安电子科技大学电子工程学院,陕西西安710071
- 2. 上海师范大学信息与机电工程学院,上海200234
- 折叠
摘要
Abstract
Because of the nonsmooth nonlinearity in multivalued mapping, it is difficult to apply the conventional identification method to identify the model of hysteresis. If the hysteresis exists between two linear subsystems, it is more challenging to identify this sandwich system because both the input and output of the hysteresis cannot be measured directly. To deal with this problem, we propose a two-stage method based on degeneration inputs. A special exciting signal called the degeneration input is designed to degenerate the hysteresis into a static smooth function with one-to-one mapping, so that the linear subsystems can be estimated. Then, based on the obtained linear submodels, both the immeasurable input and output of hysteresis are reconstructed and a neural-network-based model of the hysteresis can be obtained by using the expanded input space method. Experimental results on a piezoelectric positioning system are presented to illustrate the performance of the proposed identification scheme.关键词
三明治系统/迟滞/退化激励信号/非光滑/扩展输入空间法Key words
sandwich systems/hysteresis/degeneration input/non-smooth/expanded input space method分类
信息技术与安全科学引用本文复制引用
谢扬球,谭永红..基于退化激励信号的含有迟滞的三明治系统辨识[J].控制理论与应用,2012,29(5):555-563,9.
