Title:
AVERAGE FLOW RATE CALCULATION DEVICE
Document Type and Number:
Japanese Patent JP2017003542
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an average flow rate calculation device capable of achieving improvement of accuracy of calculating an average flow rate.SOLUTION: A personal computer (PC) 2 calculates an average flow rate from flow rate data measured by a laser Doppler flow meter 1. The PC 2 performs fast Fourier transform (FFT) on the flow rate data, extracts a low frequency component of a signal on which the FFT has been performed with a low-pass filter, and performs inverse fast Fourier transform (IFFT) on the extracted signal. A transfer function of the low-pass filter is the Fermi-Dirac distribution function.SELECTED DRAWING: Figure 1
Inventors:
KUROKAWA TOSHIKUNI
MORITA TOSHIKI
KAWASAKI SATOSHI
ONOHARA SHUNSUKE
MATSUOKA KATSUMI
MORITA TOSHIKI
KAWASAKI SATOSHI
ONOHARA SHUNSUKE
MATSUOKA KATSUMI
Application Number:
JP2015120939A
Publication Date:
January 05, 2017
Filing Date:
June 16, 2015
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
G01P5/00; G01P5/26
Attorney, Agent or Firm:
Patent Business Corporation Ark Patent Office