摘要：文章提出了一种双层网格变结构多模型方法用于复杂系统的状态估计。
Abstract: The paper presents a variable structure multiple model estimation based on two-layer model grid, which is used to state estimation for hybrid system.
将当前统计模型和变结构多模型估计算法相结合，阐述了变结构多模型算法的基本思想，研究和设计了一种用于跟踪机动目标的变结构交互多模型算法。
The basic idea of the variable-structure multiple model algorithm is expatiated. A variable-structure IMM algorithm for tracking a maneuvering target is studied and designed.
运用变结构滑模控制理论和多模型切换，使车辆转向控制具有良好的跟踪性能和鲁棒性。
The use of variable structure control theory and multiple-model conversion makes the vehicle steering control have favorable tracking capability and robustness.
变结构多模算法是最有效的机动目标跟踪滤波算法，其核心是模型集自适应策略。
The variable structure multiple-model estimation filtering is the most effective approach for tracking maneuvering target, and the model set adaptation algorithm is the core of it.
将系统约束分为基本约束和条件约束，建立了变拓扑结构柔性多体动力学模型。
Classifying the system constraints as basic constraints and variable constraints, a model of flexible multibody with changing topologies is developed.
将系统约束分为基本约束和条件约束，建立了变拓扑结构柔性多体动力学模型。
Classifying the system constraints as basic constraints and variable constraints, a model of flexible multibody with changing topologies is developed.
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