一类化工过程自适应状态观测器的设计  

Design of adaptive state-observers in the chemical process

作　　者：徐巍[1] 胡品慧[1] 

机构地区：[1]石油大学自动化研究所,北京102249

出　　处：《系统工程与电子技术》2005年第4期711-714,共4页Systems Engineering and Electronics

基　　金：国家"8 63"高技术计划基金资助课题 (2 0 0 1AA413 12 0 ) ;石油集团公司石油科技中青年创新基金 (0 4E70 2 7)资助课题

摘　　要：提出了一种非线性系统自适应状态观测器的设计方法。根据系统工作点的变化在线配置极点,选取合适的反馈增益矩阵,无论如何选取状态观测器的初值,都能保证观测器在大范围内稳定工作。理论分析了存在模型误差和噪声干扰时观测器的鲁棒性。在CSTR上的仿真结果证明,用该方法设计的观测器能够稳定收敛到状态真值。A design method of adaptive state-observers for nonlinear systems is proposed. Desired gain matrix is achieved by allocating the observer poles. Observers can work over a wide range regardless of initial estimation conditions. The design approach is also superior in terms of robustness in the presence of errors in modeling the system and noise disturbances. Simulation examples to demonstrate the structure and performance of this proposed observer for CSTR are presented. The results show the presented design approach is good.

关 键 词：状态观测器 非线性系统 收敛性 自适应 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]