SENSORLESS DETECTION OF REAL PEDALLING EFFORT

The invention relates to a method for estimating pedalling activity on an electrically assisted bicycle, comprising the steps of measuring the speed of rotation of a wheel of the bicycle; measuring the speed of rotation of the crankset; calculating an apparent gear ratio (Ba) proportional to the rat...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	LETOUT, Sébastien, ALARY, Theophile, BOSSON, Maël, MARGUET, Raphaël
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CYCLES LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS PERFORMING OPERATIONS POWERED PROPULSION OF SLEDGES OR RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES TRANSPORTING
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Beschreibung
Zusammenfassung:	The invention relates to a method for estimating pedalling activity on an electrically assisted bicycle, comprising the steps of measuring the speed of rotation of a wheel of the bicycle; measuring the speed of rotation of the crankset; calculating an apparent gear ratio (Ba) proportional to the ratio of the measured wheel speed to the measured crankset speed; and analysing the evolution of the apparent gear ratio independently of a theoretical gear ratio (Bth) proportional to the number of wheel revolutions per crankset revolution, in order to deduce characteristics of the pedalling activity. The analysis is implemented using a time base where the pitch between the crankset rotation speed measurement samples is considered to be constant.