Digital Redesign-Based Interval State Estimation for Continuous Systems With Aperiodic Discrete Measurements
针对连续系统非周期离散测量问题，提出一种基于数字重设计的两步区间状态估计方法，通过设计指数时变增益离散观测器并分析误差边界，无需误差系统协同约束，仿真验证了有效性。
This article focuses on the two-step interval state estimation problem for continuous systems with aperiodic discrete measurements. First, based on digital redesign techniques, a discrete measurement observer with an exponential time-varying gain is designed whose estimation performance is close to the preconfigured optimal continuous measurement observer. Then, an interval state estimation is constructed by analyzing the bounds on the continuous measurement estimation error and the state matching error. Compared to discrete measurement interval estimation with monotone system theory, the constraint that the error systems need to be cooperative is removed in our proposed method. Finally, simulation examples illustrate the effectiveness and superiority of the proposed method.