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arXiv 1606.05046math.STmath.OCstat.TH
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非线性动力系统的Monte Carlo集员滤波

Monte Carlo Set-Membership Filtering for Nonlinear Dynamic Systems

Zhiguo Wang, Xiaojing Shen, Yunmin Zhu, Jianxin Pan

摘要:

当非线性动态系统的基本密度函数未知时,滤波问题是一个具有挑战性的问题。本文试图在这个问题上取得进展,提出了一类新的滤波方法在有界噪声设置通过集员理论和蒙特卡罗(边界)采样技术,称为蒙特卡罗集员滤波器。基于S-过程和Schur补的最新凸优化方法推导了集员预测和测量更新。为了保证在线使用,非线性动态被线性化的电流估计和剩余项,然后由一个优化椭球,它可以被描述为一个半无限的最优化问题。一般来说,当动态系统是非线性时,这是一个解析上难以解决的问题。然而,对于一个典型的非线性动态系统的目标跟踪,我们可以解析地推导出一些规则的性质的其余部分。此外,基于剩余性质和反函数定理,半无限最优化问题可以有效地解决Monte Carlo边界采样技术。数值算例表明,当噪声的密度函数未知时,蒙特卡罗集员滤波器的性能优于粒子滤波器。

英文摘要:

When underlying probability density functions of nonlinear dynamic systems are unknown, the filtering problem is known to be a challenging problem. This paper attempts to make progress on this problem by proposing a new class of filtering methods in bounded noise setting via set-membership theory and Monte Carlo (boundary) sampling technique, called Monte Carlo set-membership filter. The set-membership prediction and measurement update are derived by recent convex optimization methods based on S-procedure and Schur complement. To guarantee the on-line usage, the nonlinear dynamics are linearized about the current estimate and the remainder terms are then bounded by an optimization ellipsoid, which can be described as a semi-infinite optimization problem. In general, it is an analytically intractable problem when dynamic systems are nonlinear. However, for a typical nonlinear dynamic system in target tracking, we can analytically derive some regular properties for the remainder. Moreover, based on the remainder properties and the inverse function theorem, the semi-infinite optimization problem can be efficiently solved by Monte Carlo boundary sampling technique. Compared with the particle filter, numerical examples show that when the probability density functions of noises are unknown, the performance of the Monte Carlo set-membership filter is better than that of the particle filter.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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