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carrot1103

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syddesk

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carrot1103: 金币+1 2016-05-21 15:02:17
如果输出矩阵不满秩的话,会存在多个状态x对应一个y的情况,无法确定状态,也就是系统不完全可观
2楼2016-05-19 17:22:53
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Sache

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carrot1103: 金币+2 2016-05-21 20:42:48
That the output matrix is of full row rank means, roughly speaking,  the sensors used should be of different technical features/properties. In general, there is no reason to use redundent sensors (only if it is required, e.g. in fault-tolerant systems).

BTW, the observability is generally independent of the rank of the output matrix, i.e. if the system is observable with a sensor, then it is still observable with two sensors of this type.
3楼2016-05-20 13:02:20
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carrot1103

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4楼2016-05-21 20:44:13
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Sache

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4楼: Originally posted by carrot1103 at 2016-05-21 20:44:13
不是满秩,是行满秩。

Of course, it is of full row rank. Both in theory and applications, the number of the state variables is generally larger (or equal to) the number of sensors.
5楼2016-05-23 12:34:11
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