Method of detecting obstructions caused by motor-driven power windows and similar devices using fuzzy logic algorithms
First Claim
1. A method for controlled management of a mobile element, driven by an electric motor, with anti-entrapment or anti-collision safety, said mobile element, being conveniently guided and driven by a DC electric motor with a multipolar permanent magnet, characterized by performing a detection of a situation of entrapment of an object or member interposed in said mobile element'"'"'s travel, or of a possible collision of said mobile element by means of a first algorithm based on fuzzy logic, which inputs are said mobile element'"'"'s position and relative increments that can occur in current intensity demanded by the motor at one turn of the motor and after a next, subsequent turn of said motor.
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Accused Products
Abstract
The mobile element is a vehicle window pane, panel, movable seat or similar, conveniently guided, and driven by a DC electric motor with a permanent magnet, and the method comprises a step of detecting an entrapment or collision situation of the mobile element by means of a first fuzzy logic algorithm, which inputs are the mobile element'"'"'s position and the increments that may occur in the intensity of the current demanded by said motor, which is evaluated from the relative increase of the current intensity at one turn of the motor and after one next, subsequent turn of the motor. A second fuzzy logic algorithm is used to control the mobile element'"'"'s velocity, in close loop.
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Citations
11 Claims
- 1. A method for controlled management of a mobile element, driven by an electric motor, with anti-entrapment or anti-collision safety, said mobile element, being conveniently guided and driven by a DC electric motor with a multipolar permanent magnet, characterized by performing a detection of a situation of entrapment of an object or member interposed in said mobile element'"'"'s travel, or of a possible collision of said mobile element by means of a first algorithm based on fuzzy logic, which inputs are said mobile element'"'"'s position and relative increments that can occur in current intensity demanded by the motor at one turn of the motor and after a next, subsequent turn of said motor.
Specification