### Abstract

Language | English |
---|---|

Pages | 1542-1546 |

Number of pages | 4 |

Journal | High Voltage Engineering |

Volume | 34 |

Issue number | 8 |

Publication status | Published - Aug 2008 |

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### Keywords

- transfer function
- parameter identification
- vector fitting
- matrix amplitude frequency
- algorithm
- magnetic field antenna

### Cite this

*High Voltage Engineering*,

*34*(8), 1542-1546.

}

*High Voltage Engineering*, vol. 34, no. 8, pp. 1542-1546.

**An improved vector fitting method for parameter identification of transfer functions.** / Zhang, L.; Wang, W.; Li, Q.; Siew, W.H.

Research output: Contribution to journal › Article

TY - JOUR

T1 - An improved vector fitting method for parameter identification of transfer functions

AU - Zhang, L.

AU - Wang, W.

AU - Li, Q.

AU - Siew, W.H.

PY - 2008/8

Y1 - 2008/8

N2 - The electromagnetic field antenna's amplitude-frequency characteristic is not smooth, must establish its equivalent transfer function to carry on the digitization to the metrical data to adjust, can the correct scale adjustment leave the actual electromagnetic interference intensity. Therefore, in the traditional plural number vector fitting's method foundation, through increases the derivative information as well as the coefficient matrix right while one opposite angle, proposed one kind of improvement plural number vector fitting law. Because the derivative may reflect the data the partial rate of change, therefore joins the derivative element the coefficient matrix, theoretically may contain more by the fitted curve higher order information and the partial detail; But is right to further reduce the coefficient matrix while one opposite angle the equation condition number, thus enhancement computational accuracy. The simulation and the application result indicated that the improvement algorithm compared with the traditional plural number vector fitting law, may approach the actual amplitude frequency characteristic well the partial detail, has the higher fitting accuracy, and reduces to a certain extent to the frequency range sampling points request.

AB - The electromagnetic field antenna's amplitude-frequency characteristic is not smooth, must establish its equivalent transfer function to carry on the digitization to the metrical data to adjust, can the correct scale adjustment leave the actual electromagnetic interference intensity. Therefore, in the traditional plural number vector fitting's method foundation, through increases the derivative information as well as the coefficient matrix right while one opposite angle, proposed one kind of improvement plural number vector fitting law. Because the derivative may reflect the data the partial rate of change, therefore joins the derivative element the coefficient matrix, theoretically may contain more by the fitted curve higher order information and the partial detail; But is right to further reduce the coefficient matrix while one opposite angle the equation condition number, thus enhancement computational accuracy. The simulation and the application result indicated that the improvement algorithm compared with the traditional plural number vector fitting law, may approach the actual amplitude frequency characteristic well the partial detail, has the higher fitting accuracy, and reduces to a certain extent to the frequency range sampling points request.

KW - transfer function

KW - parameter identification

KW - vector fitting

KW - matrix amplitude frequency

KW - algorithm

KW - magnetic field antenna

UR - http://gdyjs.periodicals.net.cn/default.html

M3 - Article

VL - 34

SP - 1542

EP - 1546

JO - High Voltage Engineering

T2 - High Voltage Engineering

JF - High Voltage Engineering

SN - 1003-6520

IS - 8

ER -