JPS6447115A - Transient change tracing type digital filter - Google Patents

Transient change tracing type digital filter

Info

Publication number
JPS6447115A
JPS6447115A JP20341687A JP20341687A JPS6447115A JP S6447115 A JPS6447115 A JP S6447115A JP 20341687 A JP20341687 A JP 20341687A JP 20341687 A JP20341687 A JP 20341687A JP S6447115 A JPS6447115 A JP S6447115A
Authority
JP
Japan
Prior art keywords
transient change
signal
input
section
transient
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP20341687A
Other languages
Japanese (ja)
Other versions
JPH0720048B2 (en
Inventor
Kazuhiko Koyama
Kenichi Sano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Nippon Atomic Industry Group Co Ltd
Original Assignee
Toshiba Corp
Nippon Atomic Industry Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Nippon Atomic Industry Group Co Ltd filed Critical Toshiba Corp
Priority to JP62203416A priority Critical patent/JPH0720048B2/en
Publication of JPS6447115A publication Critical patent/JPS6447115A/en
Publication of JPH0720048B2 publication Critical patent/JPH0720048B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Filters That Use Time-Delay Elements (AREA)

Abstract

PURPOSE:To improve the tracking performance with respect to the transient state by providing a transient change detection section detecting a signal transient change and an input/output deviation detection section detecting the increased deviation in the signal and allowing a processing section to vary the time constant at the detection of transient change. CONSTITUTION:A transient change detection section 2 obtains a difference between an input signal and an output signal between an input section 1 and a filter processing section 3 and judges it as the occurrence of a transient change if the difference exceeds a reference value. Moreover, an input/output deviation detection section 4 decided it as a large deviation if the integration value of the difference between the input signal and the output signal exceeds a reference value. A processing section 3 has a function having a smooth processing capability in the steady-state but changing the time constant sequentially at the entrance of a detection signal, and then can follow well a rapid transient change as well as a slow transient change. Thus, the titled digital filter acts stably in an alarm device or a control system where a transient change is to be caught surely.
JP62203416A 1987-08-18 1987-08-18 Transient change tracking digital filter Expired - Lifetime JPH0720048B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62203416A JPH0720048B2 (en) 1987-08-18 1987-08-18 Transient change tracking digital filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62203416A JPH0720048B2 (en) 1987-08-18 1987-08-18 Transient change tracking digital filter

Publications (2)

Publication Number Publication Date
JPS6447115A true JPS6447115A (en) 1989-02-21
JPH0720048B2 JPH0720048B2 (en) 1995-03-06

Family

ID=16473712

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62203416A Expired - Lifetime JPH0720048B2 (en) 1987-08-18 1987-08-18 Transient change tracking digital filter

Country Status (1)

Country Link
JP (1) JPH0720048B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011019012A (en) * 2009-07-07 2011-01-27 Shimadzu Corp Digital filter and material tester
GB2516655A (en) * 2013-07-29 2015-02-04 Gm Global Tech Operations Inc Control apparatus for detecting a variation of a fluid level in a tank

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60120611A (en) * 1983-12-05 1985-06-28 Fuji Electric Co Ltd Digital filter
JPS6287648A (en) * 1985-10-11 1987-04-22 Nippon Denso Co Ltd Intake-air pressure detecting device for internal combustion engine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60120611A (en) * 1983-12-05 1985-06-28 Fuji Electric Co Ltd Digital filter
JPS6287648A (en) * 1985-10-11 1987-04-22 Nippon Denso Co Ltd Intake-air pressure detecting device for internal combustion engine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011019012A (en) * 2009-07-07 2011-01-27 Shimadzu Corp Digital filter and material tester
GB2516655A (en) * 2013-07-29 2015-02-04 Gm Global Tech Operations Inc Control apparatus for detecting a variation of a fluid level in a tank
US10352751B2 (en) 2013-07-29 2019-07-16 GM Global Technology Operations LLC Control apparatus for detecting a variation of a fluid level in a tank

Also Published As

Publication number Publication date
JPH0720048B2 (en) 1995-03-06

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