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Order estimation for linear time-invariant systems using frequency domain identification methods
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DOI：10.1109/9.633829.png)
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A two-step coarse-fine order estimation technique is proposed to determine the order of the numerator and the denominator polynomials of rational transfer function models for single-input/single-output (SISO) linear time-invariant systems. The coarse order estimation is based on rank detection by verification of the stochastic significance of the singular values of a linearized problem. The fine order estimation is based on a statistical analysis of the maximum likelihood cost function. The method is tested on measurements of low- (4 zeros, 6 poles) and high- (58 poles, 58 zeros) order systems.
Keyword:
model selection
system identification
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7
论文数:
1.3W
被引数:
6.7W
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