Motor control for elevator using two control signals

Details Motor control for elevator using two control signals Motor control for elevator using two control signals

2008-01-01

2008-01-01

Salata, Jonathan (Department: 2837)

Elevator, industrial lift truck, or stationary lift for vehicle

Having specific load support drive-means or its control

Includes control for power source of drive-means

Reexamination Certificate

active

07314120

ABSTRACT:
A method and a system for controlling an elevator that does not change the torque direction, such as an elevator without counterweight. The elevator has an alternating-current electric motor (M1), such as a permanent magnet motor or an asynchronous motor, and a motor drive section (DRIVE1) for controlling the motor and an elevator control section (ECO1) used to control the operation of the elevator. Control channels are provided between the elevator control section and the motor drive section for the transmission of control signals. To control the motor, only position and torque control signals are passed between the elevator control section and the motor drive.

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patent: WO-96/23722 (1996-08-01), None

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