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首页> 外文期刊>IEEE Transactions on Automatic Control >Sampled-data observers with generalized holds for unstable plants
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Sampled-data observers with generalized holds for unstable plants

机译:具有不稳定植物广义保全的采样数据观测器

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摘要

Optimality conditions are derived for reduced-order sampled-data estimation satisfying an observation constraint that involves a prespecified, possibly unstable, subspace of the system dynamics. It is shown that a generalized hold device possessing a time-varying exponential intersample profile is essential in order to account for the unstable dynamics. In particular, it is shown that with a continuous-time quadratic performance measure a zero-order-hold device may result in an unbounded (infinite) cost. An additional feature of the problem is the utilization of an averaging A/D device within the continuous-time/discrete-time conversion which results in averaged measurements depending upon delayed samples of the state.
机译:对于满足观察约束的降阶采样数据估计,推导了最优条件,该观测约束涉及系统动力学的预先确定的,可能不稳定的子空间。结果表明,具有时变指数样本间分布的通用保持装置对于解决不稳定的动力学至关重要。特别地,示出了利用连续时间的二次性能度量,零阶保持装置可能导致无限的(无限的)成本。该问题的另一个特征是在连续时间/离散时间转换中使用平均A / D设备,这会根据状态的延迟采样得出平均测量值。

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