Method for identifying high-speed frequency response of multirate system and apparatus therefor

摘要

There is provided with a method of identifying a frequency response of a controlled object at a sampling period of control input in a multiplexed-input multirate system in which a sampling period of control output is even “P” multiples of the sampling period of control input wherein the control object is represented by FIR filter, an M-series signal corresponding to an acquisition data length Mp×P−1 is generated, the Mp indicates a period of the M-series signal, an impulse response value of the controlled object is estimated based on the M-series signal and output data outputted from the controlled object by inputting the M-series signal thereto, and the frequency response of the controlled object is identified by performing a discrete Fourier transform on the impulse response value.

主权项

1. A method of identifying a frequency response of a controlled object at a sampling period of control input in a multiplexed-input multirate system in which a sampling period of control output is even “P” multiples of the sampling period of control input, comprising:
generating an M-series signal corresponding to an acquisition data length Mp×P−1, the M-series signal being is a type of pseudo white signal and the Mp indicating a period of the M-series signal; estimating an impulse response value of the controlled object based on the M-series signal and output data outputted from the controlled object by inputting the M-series signal thereto; and performing a discrete Fourier transform on the impulse response value to identify the frequency response of the controlled object.