×

Control system for opening or closing an opening-closing member

  • US 5,483,133 A
  • Filed: 03/25/1994
  • Issued: 01/09/1996
  • Est. Priority Date: 03/25/1993
  • Status: Expired due to Fees
First Claim
Patent Images

1. A control system for opening or closing an opening-closing member, comprising:

  • a driving means for driving said opening-closing member;

    a first detecting means for detecting a driving acceleration of said driving means and generating a first signal indicative of the driving acceleration;

    a second detecting means for detecting a driving voltage of said driving means and generating a second signal indicative of the driving voltage;

    a first memory means for receiving said signals and for storing a correlation between said driving acceleration and said driving voltage based on said signals;

    a second memory means for storing a previous driving voltage supplied to said driving means;

    an acceleration threshold determining means for determining an acceleration threshold as a function of said previous driving voltage stored by said second memory means, a current driving voltage detected by said second detecting means and said correlation stored by said first memory means; and

    a decision means for deciding whether said opening-closing member has encountered a foreign material as a function of said driving acceleration detected by said first detecting means and said acceleration threshold.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×