Title:
圧力検出信号処理装置、エンジン制御システム、および、プログラム
Document Type and Number:
Japanese Patent JP6955640
Kind Code:
B2
Abstract:
The objective of the present invention is to remove drift of a piezoelectric element and thereby obtain a highly precise pressure detection signal by means of a simple configuration. A pressure detection signal processing device 200 includes: a charge amplifier 210 that accumulates electric charge produced by a piezoelectric element 35 in response to a received pressure and outputs a corresponding voltage signal; drift component extraction units 230 and 240 that extract a drift component of the piezoelectric element 35 by performing differential processing on the voltage signal; and a drift correction unit 250 that generates, based on the extracted drift component, a correction signal for removing the drift component and feeds the correction signal back to an input side of the charge amplifier.
More Like This:
Inventors:
Satoshi Fujisaki
Katsuhiko Fukui
Katsuhiko Fukui
Application Number:
JP2020557027A
Publication Date:
October 27, 2021
Filing Date:
November 19, 2018
Export Citation:
Assignee:
Mikuni Corporation
International Classes:
G01L23/10; F02D45/00; G01L23/22
Domestic Patent References:
| JP4407044B2 | ||||
| JP5883290B2 | ||||
| JP6368591B2 | ||||
| JP4410424B2 |
Attorney, Agent or Firm:
Kiuchi Mitsuharu
Koichi Okuma
Katagiri Sadanori
Kanako Kiuchi
Koichi Okuma
Katagiri Sadanori
Kanako Kiuchi