Trapping detection device of opening/closing member

Details Trapping detection device of opening/closing member Trapping detection device of opening/closing member

2006-05-02

2006-05-02

Duda, Rina (Department: 2837)

Electricity: motive power systems

Periodic, repetitious or successive operations control of...

C318S266000, C318S282000, C318S471000, C049S026000, C049S028000

Reexamination Certificate

active

07038413

ABSTRACT:
A trapping detection device of an opening/closing member includes a motor, a motor speed detection device, a control device, a voltage detection device for detecting a drive voltage applied to the motor, an actual speed decision device for deciding the actual speed of a rotation of the motor, an estimated speed calculation device for calculating the estimated speed of the rotation of the motor based on the drive voltage, an estimated speed storage device for storing the estimated speed for a predetermined time, an estimated speed correction device for correcting the estimated speed based on a difference between the actual speed and the estimated speed obtained before the predetermined time, a trapping determination device for determining the trapping based on a change state of a difference between the estimated speed being corrected and the actual speed.

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