公开(公告)号：US11840885B2

公开(公告)日：2023-12-12

申请号：US17913105

申请日：2021-03-19

Applicant: SOMFY ACTIVITES SA

Inventor： Arnaud Darlot ,  Eric Lagarde ,  Frédéric Maraval ,  Héléna Robert

IPC: E06B9/72 ,  H02P23/00 ,  H02P23/14 ,  E06B9/68

CPC classification number: E06B9/72 ,  H02P23/0031 ,  H02P23/14 ,  E06B2009/6836 ,  H02P2207/05

Abstract: A method for detecting an obstacle opposing the movement of a screen in a home automation closure or sun protection system includes an electromechanical actuator driving movement of the screen. The electromechanical actuator includes a torque support, a housing, an output shaft, and an electric motor including a stator and a rotor. The system includes a winding shaft rotating the screen and a connecting accessory between the electromechanical actuator's output shaft and the winding shaft. The method includes: determining an angular displacement value of the rotor with respect to the stator; determining angular displacement of the winding shaft relative to the housing or torque support of the electromechanical actuator; determining angular deformation of the kinematic chain between the electric motor and the winding shaft by comparing these two angular displacements; and determining the presence of an obstacle to screen movement from an angular deformation exceeding a predefined value.