METHOD OF SYNCHRONIZING ADJUSTMENT OF PEDAL LEVERS IN A STEPPER MOTOR DIRECT DRIVE ADJUSTABLE PEDAL ASSEMBLY
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United States of America Patent
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app pub date -
Mar 16, 2007
filing date -
Jan 1, 2002
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Abandoned
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Abstract
A pair of adjustment mechanisms (21, 41) interconnect a support (12) and first (14) and second (34) pedal levers. The adjustment mechanisms (21, 41) adjust the operational position of the pedal levers (14, 34) relative to the support (12). In particular, a stepper motor (52) and screw (32) unit moves the respective pedal levers (14, 34) along rods (28, 48). A controller (56) sends pulses of energy to each of the motors (52), measures a time to reach a predetermined resistance condition of each motor (52) during each pulse, and terminates energy to both motors (52) in response to the time being below a predetermined time period in any pulse to either motor (52), thereby synchronizing the movement of both pedal levers (14, 34).
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