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Automatic adjustment method and system of elevator starting torque

A technology of automatic adjustment and starting torque, which is applied in the field of elevator control to avoid slippage and increase comfort.

Active Publication Date: 2013-09-11
SHENZHEN HPMONT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the elevator has no weighing device, the torque compensation method is usually determined by detecting the change of the encoder analog value to determine the direction and magnitude of the compensation torque, but this method can only be applied to the traction with a sin-cosine encoder. On board, there are certain limitations

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  • Automatic adjustment method and system of elevator starting torque
  • Automatic adjustment method and system of elevator starting torque
  • Automatic adjustment method and system of elevator starting torque

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Embodiment Construction

[0043] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0044] Such as Figure 4 As shown, the closed-loop vector control schematic diagram of the elevator frequency conversion control system is given. The usual original elevator frequency conversion control system mainly includes:

[0045] A frequency setting module 1, configured to set a given frequency, and obtain a given rate Wset1 according to the given frequency;

[0046] The negative feedback adjustment processing module 2 is configured to perform negative feedback adjustment processing on the motor based on speed loop proportional integral operation according to the given rate Wset1. In the negative feedback adjustment processing module 2, when there is no torque compensation, the operating frequency of the inverter is determined by the set frequency Wset1, usually before the brake is opened, the inverter is already running at zero speed, and the feedback is give...

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Abstract

The invention discloses an automatic adjustment method and system of an elevator starting torque. The automatic adjustment system comprises a frequency setting module, a negative feedback adjustment processing module and a position loop operation control module. The frequency setting module is used for setting a given frequency, and acquires a given speed rate Wsetl according to the given frequency. The negative feedback adjustment processing module is used for subjecting a motor to negative feedback adjustment processing based on calculation of speed loop proportional integral according to the given speed rate Wsetl. The position loop operation control module is used for subjecting the given speed rate Wsetl to compensation processing according to pulse change values acquired from a traction machine shaft. By adopting the position loop operation control module in a conventional inverter vector control system in performing operation control processing on a position loop PI to compensate the given frequency, vectors of the motor are effectively controlled, sliding is avoided, and comfortability at an elevator starting moment is achieved under the condition of no weighing devices in the elevator.

Description

technical field [0001] The invention relates to the technical field of elevator control, in particular to an elevator starting torque automatic adjustment method and system. Background technique [0002] At present, in the elevator system, when the elevator starts, the motor first runs at zero speed, excites the motor, and then opens the brake. The weight of the elevator car and the counterweight are often inconsistent, and the inverter cannot quickly adjust enough torque at this time. Preventing the elevator from slipping will affect the comfort of the elevator when it starts. This situation is especially obvious in the gearless traction machine system, and the impact on comfort is not particularly obvious in the geared traction machine system due to the reduction gear buffer. [0003] At present, there are generally two methods to compensate the momentary moment when the brake is opened. One is to install a weighing device at the bottom of the car. The frequency converte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B1/30
Inventor 钟玉涛郑伟王国锋
Owner SHENZHEN HPMONT TECH
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