Electricity: motive power systems – Automatic and/or with time-delay means – Movement – position – or limit-of-travel
Reexamination Certificate
2005-08-30
2005-08-30
Leykin, Rita (Department: 2837)
Electricity: motive power systems
Automatic and/or with time-delay means
Movement, position, or limit-of-travel
C318S369000, C318S430000, C318S466000
Reexamination Certificate
active
06936987
ABSTRACT:
The invention concerns a method for controlling an electric motor driving a body in translation between an initial position and a final position determined by a stop, by powering the motor with reduced voltage in the final position approach phase. The motor has a torque/speed characteristic such that the torque at null speed decreases with the supply voltage. As the approach phase starts, the method consists in determining a reduced voltage by decreasing the rotational speed of the motor from a nominal value to a predetermined reduced value and in cutting the motor power supply if the motor rotational speed drops below a predetermined threshold value.
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International Search Report in SN PCT/IB01/101578.
Frommer & Lawrence & Haug LLP
Leykin Rita
Santucci Ronald R.
Somfy
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