JPS6447115A - Transient change tracing type digital filter - Google Patents
Transient change tracing type digital filterInfo
- 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
Links
Landscapes
- 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.
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)
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)
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 |
-
1987
- 1987-08-18 JP JP62203416A patent/JPH0720048B2/en not_active Expired - Lifetime
Patent Citations (2)
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)
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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