IT1250938B - Filtro adattativo a media mobile. - Google Patents

Filtro adattativo a media mobile.

Info

Publication number
IT1250938B
IT1250938B ITRM910786A ITRM910786A IT1250938B IT 1250938 B IT1250938 B IT 1250938B IT RM910786 A ITRM910786 A IT RM910786A IT RM910786 A ITRM910786 A IT RM910786A IT 1250938 B IT1250938 B IT 1250938B
Authority
IT
Italy
Prior art keywords
value
filter
moving average
filter constant
signal sample
Prior art date
Application number
ITRM910786A
Other languages
English (en)
Inventor
Abdi Mohtashemi
Norman Gray
Original Assignee
Newport Electronics Inc
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 Newport Electronics Inc filed Critical Newport Electronics Inc
Publication of ITRM910786A0 publication Critical patent/ITRM910786A0/it
Publication of ITRM910786A1 publication Critical patent/ITRM910786A1/it
Application granted granted Critical
Publication of IT1250938B publication Critical patent/IT1250938B/it

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0248—Filters characterised by a particular frequency response or filtering method
    • H03H17/026—Averaging filters
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations
    • G06F17/18—Complex mathematical operations for evaluating statistical data, e.g. average values, frequency distributions, probability functions, regression analysis

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Data Mining & Analysis (AREA)
  • Theoretical Computer Science (AREA)
  • Pure & Applied Mathematics (AREA)
  • Mathematical Optimization (AREA)
  • Computational Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Bioinformatics & Computational Biology (AREA)
  • General Engineering & Computer Science (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Operations Research (AREA)
  • Probability & Statistics with Applications (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Algebra (AREA)
  • Databases & Information Systems (AREA)
  • Software Systems (AREA)
  • Evolutionary Biology (AREA)
  • Computer Hardware Design (AREA)
  • Complex Calculations (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Feedback Control In General (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
  • Processing Of Color Television Signals (AREA)
  • Picture Signal Circuits (AREA)

Abstract

Viene descritto un filtro a software che fa lavorare un elaboratore per realizzare un metodo di filtraggio a media mobile. Il metodo comprende il designare una costante di filtro iniziale per controllare il tempo di riposta del filtro, mantenere un valore di segnale a media mobile; trovare un valore di differenza tra il valore di segnale a media mobile e ciascuna nuova ampiezza di campione di segnale prima che la nuova ampiezza di campione di segnale venga incluso nel valore di segnale di media mobile; aggiornare il valore del segnale di media corrente aggiungendo ad esso, ad un tempo in cui si presenta un nuovo campione di segnale, un valore calcolato dividendo il valore di differenza trovato per un nuovo campione di segnale per la costante di filtro iniziale; e quando una molteplicità sequenziale dei valori di differenza trovati manifesta una polarità identica, dividere la costante iniziale del filtro per un fattore intero per creare una costante di filtro di rotta che di conseguenza riduce il tempo di risposta del filtro. Quando, in contrapposizione, un valore di differenza trovato presenta una polarità diversa da un valore di differenza trovato immediatamente precedente, la costante di filtro viene moltiplicata per un fattore intero per aumentare il suo valore, in modo da non superare un valore massimo, al fine di aumentare il tempo di risposta del filtro.
ITRM910786A 1990-10-17 1991-10-16 Filtro adattativo a media mobile. IT1250938B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US59908790A 1990-10-17 1990-10-17

Publications (3)

Publication Number Publication Date
ITRM910786A0 ITRM910786A0 (it) 1991-10-16
ITRM910786A1 ITRM910786A1 (it) 1993-04-16
IT1250938B true IT1250938B (it) 1995-04-22

Family

ID=24398158

Family Applications (1)

Application Number Title Priority Date Filing Date
ITRM910786A IT1250938B (it) 1990-10-17 1991-10-16 Filtro adattativo a media mobile.

Country Status (6)

Country Link
CA (1) CA2052600C (it)
DE (1) DE4134398C2 (it)
ES (1) ES2048066B1 (it)
FR (1) FR2668319B1 (it)
GB (1) GB2248954B (it)
IT (1) IT1250938B (it)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5339335A (en) * 1992-12-15 1994-08-16 Elsag International B.V. Method and apparatus for digitally processing and filtering signals in industrial control applications
US5394744A (en) * 1994-01-05 1995-03-07 Ford Motor Company Fault detection using averaging filter with variable response time
KR101716481B1 (ko) 2016-01-19 2017-03-14 엘에스산전 주식회사 이동평균 필터의 동작 제어 방법

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1290865A (it) * 1969-09-24 1972-09-27
DE2734978A1 (de) * 1977-08-03 1979-02-22 Basf Ag Wickelwelle zum aufwickeln mehrerer baender gleichzeitig
JPS56169923A (en) * 1980-06-03 1981-12-26 Mitsubishi Electric Corp Digital low-pass filter device
GB8418504D0 (en) * 1984-07-20 1984-08-22 Fiamass Ltd Functional analysis

Also Published As

Publication number Publication date
ITRM910786A1 (it) 1993-04-16
FR2668319B1 (fr) 1994-01-28
DE4134398A1 (de) 1992-04-23
CA2052600C (en) 1995-09-19
FR2668319A1 (fr) 1992-04-24
GB9120778D0 (en) 1991-11-13
ITRM910786A0 (it) 1991-10-16
ES2048066A2 (es) 1994-03-01
ES2048066B1 (es) 1996-07-01
GB2248954A (en) 1992-04-22
ES2048066R (it) 1995-11-16
CA2052600A1 (en) 1992-04-18
DE4134398C2 (de) 1996-02-15
GB2248954B (en) 1994-08-24

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970910