摘要
提出了一类化工过程中非线性系统大范围渐近稳定状态观测器的构造方法。通过配置极点选择时变状态反馈增益阵保证观测器的性能,使观测器能在大范围内稳定工作。其稳定性可由Lyapunov理论得到证明,存在模型误差和噪声干扰时也有较好的鲁棒性。从工程应用的角度,提出了分区域配置矩阵的策略,大大减少了在线计算量。同时改进了算法,保证能在应用中正确离线计算。在CSTR仿真器上的应用结果证明了该方法的良好性能。
The design method of globally asymptotically stable observers for nonlinear process is proposed.Desired performance is achieved by allocating the observer poles.The observers can work over a wide range regardless of initial estimation conditions.Moreover,convergence of observers is formulated by using Lyapunov stability theorems.The design approach is also superior in terms of robustness in the presence of errors in modeling the system and noise disturbances. Simulation examples show the construction and performance of this proposed observer for CSTR.
出处
《控制工程》
CSCD
2004年第6期485-487,532,共4页
Control Engineering of China
基金
国家高技术发展计划"863"资助项目(2001AA413120)
中国石油集团公司石油科技中青年创新基金资助项目(04E7027)
关键词
状态观测器
大范围渐近稳定
非线性系统
区域极点配置
state-observer
globally asymptotically stable
nonlinear systems
partition assignment
