公开(公告)号：US20030137265A1

公开(公告)日：2003-07-24

申请号：US10348682

申请日：2003-01-21

Applicant: International Rectifier Corp.

Inventor： Xavier de Frutos

IPC: H02P003/00

CPC classification number: H02H7/0851 ,  H02H7/093

Abstract: An antipinch circuit prevents the motor driven closure of an automotive window if a soft obstacle is compressed between the window and the top of the door frame, and the window is opened in response to the sensing of the obstacle. The circuit measures the motor torque (by measuring motor current) and the motor shaft speed (by measuring motor back EMF). The torque and motor speed are compared to nullsignaturesnull of these values in the case of the window closing normally against the top of the door frame, or against an obstacle, and either stopping or reversing the motor rotation accordingly.

Abstract translation: 如果在窗户和门框的顶部之间压缩了软障碍物，则响应于障碍物的感测而打开窗户，止反电路可以防止汽车窗的马达驱动关闭。 电路测量电机转矩（通过测量电机电流）和电机轴转速（通过测量电机反电动势）。 在窗口正常关闭门框顶部或障碍物的情况下，扭矩和电机速度与这些值的“签名”进行比较，并且相应地停止或反转电机旋转。