Elevator control device and elevator control method

A control device and elevator technology, which is applied in the field of elevator control devices, can solve problems such as rising costs, and achieve the effects of ensuring stability, reducing starting shock and rolling back
CN104520223BActive Publication Date: 2016-03-09MITSUBISHI ELECTRIC CORP
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
MITSUBISHI ELECTRIC CORP
Publication Date
2016-03-09

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Abstract

During a starting period upon starting of an elevator, a first control system generates a first torque current command value. In a steady period after the elapse of the starting period, a second control system controls an elevator drive unit (100) by generating a second torque current command value by adding, to a torque current command value that the second control system has generated and as an initial value, an offset current command value corresponding to the amount of imbalance load calculated by a car load estimation unit (206) at the time of switching of the control systems.
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Description

technical field

[0001] The present invention relates to an elevator control device and an elevator control method capable of stably reducing the starting shock and the rollback of the car when the elevator starts to travel. Background technique

[0002] Typically, in a rope elevator, the car and counterweight are suspended like a bottle by means of drive sheaves. When the car of such a rope elevator is made stationary, it is kept stationary by a brake, and the brake is released when starting to travel (starting), and the driving sheave is rotated by a motor to raise and lower the car.

[0003] Also, when the car starts running in this way, a load corresponding to the weight difference between the car and the counterweight (hereinafter referred to as unbalanced load) is transmitted to the motor as the brake is released. Therefore, if the brake is released in a state where the torque of the electric motor is zero, a start shock and / or a car rollback will occur due to a delay ...

Claims

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