METHOD AND APPARATUS FOR PROPORTIONALLY ASSISTED PROPULSION

A system for the proportional propulsion assistance comprising a strain gauge for the detection and measurement of a flexion of the hub of a rear wheel of a bicycle, wherein said gauge is placed on a vertical face of said hub; amplification means for amplifying a measurement signal coming from said...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	QUIRION, BENOIT, DUBE, JEAN-YVES, LAFOND, GUY
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CYCLE AXLE SUSPENSIONS CYCLE FRAMES CYCLE SIDE-CARS, FORECARS, OR THE LIKE CYCLE STEERING DEVICES CYCLES LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS PERFORMING OPERATIONS POWERED PROPULSION OF SLEDGES OR RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FORCYCLES TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES TRANSPORTING
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Beschreibung
Zusammenfassung:	A system for the proportional propulsion assistance comprising a strain gauge for the detection and measurement of a flexion of the hub of a rear wheel of a bicycle, wherein said gauge is placed on a vertical face of said hub; amplification means for amplifying a measurement signal coming from said gauge, a filter at the input of said amplification means; an analog to digital converter at the output of said amplification means; a digital processing circuit to digitize the signal at the output of said amplification means to compensate for any deviation of the said signal to calculate, in real time, the effort provided by the cyclist on the gears of the said hub and to control the assistance effort of the DC motor on the hub of the rear wheel of the bicycle to give a progressive assistance to the cyclist.