METHOD OF SYNCHRONIZING ADJUSTMENT OF PEDAL LEVERS IN A STEPPER MOTOR DIRECT DRIVE ADJUSTABLE PEDAL ASSEMBLY

• US 20070193395A1
• Filed: 03/16/2007
• Published: 08/23/2007
• Est. Priority Date: 01/01/2002
• Status: Abandoned Application

• Current Assignee: Drivesol Worldwide Holding Corporation (Sun Capital Partners Incorporated)
• Original Assignee: Drivesol Worldwide Holding Corporation (Sun Capital Partners Incorporated)
• Inventors: Rixon, Christopher, Ouyang, Jiyuan
• Application Number:
  US11/687,389
• Publication Number:
  US 20070193395A1
• Time in Patent Office: Days
• US Class Current: 74/512
• CPC Class Codes: G05G 1/405 infinitely adjustable
• CPC Class Codes: Y10T 74/20528 Foot operated
• CPC Class Codes: Y10T 74/20888 Pedals

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).

Claims

1. A method of synchronizing the adjustment of first (14) and second (34) pedal levers with first and second stepper motors (52) by the steps of:

sending pulses of energy to each of the motors (52),

measuring the time to reach a predetermined resistance condition of each motor (52) during each pulse, and

terminating energy to both motors (52) in response to the time being below a predetermined time period in any pulse to either motor (52).

2. A method as set forth in claim 1 including the step of restarting the pulses after each termination of energy.

3. A method as set forth in claim 1 including oscillating the energy in each pulse at a predetermined frequency.