EP 1859226 A1 20071128 - SIGNAL PROCESSING AND POSITION DETERMINING APPARATUS AND METHODS
Title (en)
SIGNAL PROCESSING AND POSITION DETERMINING APPARATUS AND METHODS
Title (de)
SIGNALVERARBEITUNGS- UND POSITIONSBESTIMMUNGSVORRICHTUNGEN UND -VERFAHREN
Title (fr)
DISPOSITIF ET PROCEDES DE DETERMINATION DE POSITON DE TRAITEMENT DU SIGNAL
Publication
Application
Priority
- AU 2006000282 W 20060303
- AU 2005901050 A 20050304
Abstract (en)
[origin: WO2006092026A1] Signal processing apparatus, e.g. a resolver-to-digital converter (30), converts an analogue input, e.g. sinusoidal signals such as resolver signals V<SUB>sin</SUB>,V<SUB>cos</SUB>, into a digital output, e.g. an angular position and angular speed for a rotor. A first processing unit (31), e.g. a quadrature encoder, monitors the input at a first resolution to produce a first tracking error e<SUB>1</SUB> between the digital output and the analogue input, and a second processing unit (32), which e.g. samples the input signals and e.g. applies a sine cosine function or an arctan function, monitors the input at a second resolution higher than the first resolution to produce a second tracking error e<SUB>2</SUB> between the digital output and analogue input. The apparatus determines the digital output based on the first or second tracking error, e.g. through processing with a filter (33), and includes a switch (34) for switching between the two errors so as to promote tracking stability. Switching may for example be based on a comparison of the first error signal e<SUB>1</SUB> with a threshold value, e.g. a maximum error value.
IPC 8 full level
CPC (source: EP KR)
G01B 7/30 (2013.01 - KR); G01D 5/2073 (2013.01 - EP); H03M 1/12 (2013.01 - KR); H03M 1/303 (2013.01 - EP)
Citation (search report)
See references of WO 2006092026A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2006092026 A1 20060908; CA 2599693 A1 20060908; CN 101147041 A 20080319; EP 1859226 A1 20071128; JP 2008532017 A 20080814; KR 20070116850 A 20071211
DOCDB simple family (application)
AU 2006000282 W 20060303; CA 2599693 A 20060303; CN 200680006699 A 20060303; EP 06704955 A 20060303; JP 2007557288 A 20060303; KR 20077022627 A 20071004