×

Method of determining the position of the shaft of a drive motor for a roller blind

  • US 20060138982A1
  • Filed: 12/14/2005
  • Published: 06/29/2006
  • Est. Priority Date: 12/24/2004
  • Status: Active Grant
First Claim
Patent Images

1. A method of determining the position and/or the speed of the shaft of a direct current motor (MOT) including an armature powered via brushes and a bar commutator and designed to drive a moving element (LD) of a building, which includes the following phases:

  • detecting and counting the commutations that occur between the brushes and the commutator bars to determine the position and/or the speed of the motor shaft when the commutation count is valid, and measuring the back electromotive force of the motor (MOT) to determine the position and/or the speed of the motor shaft when the commutation count is not valid.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×