JP2003004780A5

JP2003004780A5 -

Info

Publication number: JP2003004780A5
Application number: JP2002063205A
Authority: JP
Filing date: 2002-03-08
Publication date: 2005-09-02
Anticipated expiration: 2022-03-08

Claims

Obtain the voltage across the test impedance in a time series when a rectangular change is applied to the energization current flowing through the test impedance, and estimate the parameters constituting the equivalent circuit of the test impedance from the obtained voltage data A method for estimating an impedance parameter.

Obtain the voltage across the test impedance in a time series when a rectangular change is applied to the energization current flowing through the test impedance, and estimate the parameters constituting the equivalent circuit of the test impedance from the obtained voltage data In doing so, an impedance parameter estimation method characterized by using an average value of voltage data or an average value of estimated parameters.

The voltage across the test impedance when the energization current flowing through the test impedance is changed in a rectangular shape is obtained in time series, and the parameters that constitute the equivalent circuit of the test impedance are calculated from the obtained voltage data. Parameter as the initial value,
Substituting the initial value of the parameter into a parameter constituting the equivalent circuit of the test impedance, and calculating the voltage across the test impedance by calculation,
Obtain the error between the voltage across the test impedance obtained in the calculation and the time-series voltage data actually measured,
A method for estimating an impedance parameter, comprising estimating a parameter constituting an equivalent circuit of the test impedance when the error is minimized.

The voltage across the test impedance when the energization current passed through the test impedance is changed in a rectangular shape is obtained in time series, and an equivalent circuit of the test impedance is constructed from the average value of the obtained voltage data. Calculate the parameter as the parameter initial value,
Substituting the initial value of the parameter into a parameter constituting the equivalent circuit of the test impedance, and calculating the voltage across the test impedance by calculation,
Obtain the error between the voltage across the test impedance obtained in the calculation and the average value of the time series voltage data actually measured,
A method for estimating an impedance parameter, comprising estimating a parameter constituting an equivalent circuit of the test impedance when the error is minimized.

5. The impedance parameter estimation method according to claim 1, wherein the rectangular current change increases or decreases an energization current with respect to a reference value.

In an impedance parameter estimation device that estimates a parameter value that constitutes an equivalent circuit of a test impedance to be measured,
Current supply means capable of supplying a direct current as an energization current to the test impedance and giving a rectangular current change to the energization current for a predetermined time;
Voltage measuring means for measuring a voltage across the test impedance at a time immediately before the predetermined time and at least two points of time within the predetermined time;
An impedance parameter estimation apparatus characterized in that a parameter value constituting an equivalent circuit of the test impedance is estimated using data obtained by the voltage measuring means.

In an impedance parameter estimation device that estimates a parameter value that constitutes an equivalent circuit of a test impedance to be measured,
Current supply means capable of supplying a direct current as an energization current to the test impedance and giving a rectangular current change to the energization current for a predetermined time;
Voltage measuring means for measuring a voltage across the test impedance at a time immediately before the predetermined time and at least two points of time within the predetermined time;
An initial value of the parameter calculated using data obtained by the voltage measuring means;
Applying this initial value to the equivalent circuit, the voltage across the test impedance is calculated,
The curve fitting means that minimizes the error between the data obtained by the voltage measuring means and the voltage across the simulated test impedance,
An impedance parameter estimating apparatus for estimating a parameter value constituting an equivalent circuit of the test impedance.

The impedance parameter estimation device according to claim 6 or 7, wherein the rectangular current change increases or decreases an energization current with respect to a reference value.