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State Estimation for Sampled-Data Descriptor Nonlinear System: A Strong Tracking Unscented Kalman Filter Approach

机译:采样数据描述符非线性系统的状态估计:强跟踪无味卡尔曼滤波方法

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摘要

This paper proposes a state estimation method for a sampled-data descriptor system by the Kalman filtering method. The sampled-data descriptor system is firstly discretized to obtain a discrete-time nonsingular model. Based on the discretized nonsingular system, a strong tracking unscented Kalman filter (STUKF) algorithm is designed for the state estimation. Then, a defined suboptimal fading factor is proposed and added to the prediction covariance for decreasing the weight of the prior knowledge on the conventional UKF filtering solution. Finally, a simulation example is given to show the effectiveness of the proposed method.
机译:提出了一种基于卡尔曼滤波的采样数据描述符系统状态估计方法。首先将采样数据描述符系统离散化以获得离散时间非奇异模型。在离散非奇异系统的基础上,设计了一种强跟踪无味卡尔曼滤波器(STUKF)算法进行状态估计。然后,提出了一个定义的次优衰落因子,并将其添加到预测协方差中,以减少传统UKF滤波解决方案中现有知识的权重。最后,通过仿真实例说明了该方法的有效性。

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  • 来源
    《Mathematical Problems in Engineering》 |2017年第7期|5640309.1-5640309.9|共9页
  • 作者单位

    Harbin Inst Technol, Sch Astronaut, West Dazhi St, Harbin 150001, Heilongjiang, Peoples R China;

    Harbin Inst Technol, Sch Astronaut, West Dazhi St, Harbin 150001, Heilongjiang, Peoples R China;

    Changzhou Vocat Inst Light Ind, Changzhou, Peoples R China;

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