基于广义参数估计的观测器在电力系统和生化反应器中的应用
Generalized Parameter Estimation-based Observers: Application to Power Systems and Chemical-Biological Reactors
摘要：
本文提出了一种新的非线性系统状态观测器设计方法。它由最近推出的参数估计为基础的观测器，这是适用于系统验证一个特定的代数约束的扩展。与以前的观测器相比，新的观测器避免了实现可能阻碍其实际应用的开环积分的需要。我们给出了两个版本的观察者，一个是确保渐近收敛，第二个是在有限时间内实现收敛。在这两种情况下，所需的激励条件严格弱于经典的持续激励假设。它表明，所提出的技术是适用于多机电力系统和化学-生物反应器的实际重要的例子。
英文摘要：
In this paper we propose a new state observer design technique for nonlinear systems. It consists of an extension of the recently introduced parameter estimation-based observer, which is applicable for systems verifying a particular algebraic constraint. In contrast to the previous observer, the new one avoids the need of implementing an open loop integration that may stymie its practical application. We give two versions of this observer, one that ensures asymptotic convergence and the second one that achieves convergence in finite time. In both cases, the required excitation conditions are strictly weaker than the classical persistent of excitation assumption. It is shown that the proposed technique is applicable to the practically important examples of multimachine power systems and chemical-biological reactors.
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