应用非线性降阶观测器在线估计连续搅拌反应釜系统状态

本文以实际非线性连续搅拌反应釜(CSTR)为背景,利用 Lyapunov稳定性和指数可观系统概念,提出并设计了一种适合于工程实际应用的非线性降阶观测器,并实际用作实时在线观测估计CSTR系统的不可测状态。结果表明,这种观测器计算量小、结构简单、适应性强,且便于实时在线估算,即使系统处于随机干扰的环境,亦能获得满意的结果。

AN ON-LINE STATE ESTIMATION OF CSTR SYSTEM USING NON-LINEAR REDUCED-ORDER OBSERVER

An engineering efficient reduced-order observer for non-liner system was proposed and designed, based on the actual non-liner continuousstirred-tank reactor(CSTR) system,on the concepts of Lyapunov's stability and exponential observability system, and was used as a real-time state estimater in the unmeasurable state of on-line state estimation of CSTR system.It was found that this was a simply, fast and flexible observation algorithm, which resulted in good performance even if the system was in stochastic environment.