Performance improvement in decentralized adaptive control: a modified model reference scheme
Performance improvement in decentralized adaptive control: a modified model reference scheme
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DOI：
10.1109/cdc.1992.371494
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发表时间：
1992-12
期刊：
影响因子：
--
通讯作者：
A. Datta
中科院分区：
文献类型：
--
作者：
A. Datta
针对由N个参数未知的线性关联子系统组成的连续时间大系统，提出了一种新的分散模型参考自适应控制器。在每个隔离子系统的传递函数的高频增益是已知的情况下，新方案可以用于改善通常由子系统参数的知识不足引起的频带瞬态行为。结果表明，瞬态性能的改善必须权衡对允许的未建模互连的大小，以这样一种方式，作为未建模互连消失，瞬态性能的改善可以任意。由于每个局部自适应方案使用近似微分器，因此高频传感器噪声的存在可能对新方案的有效性施加额外的限制。
A new decentralized model reference adaptive controller is proposed for a continuous time large scale system composed of N interconnected linear subsystems with unknown parameters. In the case where the high frequency gains of the transfer functions of each of the isolated subsystems is known, the new scheme can be used to improve the band transient behavior that typically results from poor knowledge of the subsystem parameters. It is shown that the transient performance improvement has to be traded off against the size of the allowable unmodeled interconnections in such a way that as the unmodeled interconnections disappear, the improvement in transient performance can be made arbitrary. Since each local adaptive scheme uses approximate differentiators, the presence of high frequency sensor noise may impose additional limitations on the effectiveness of the new scheme.>