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Elevator weighing value diagnosing and revising method

A weighing value and elevator technology, applied in the field of elevator control, can solve problems such as inaccurate torque compensation, achieve the effects of stable starting process, reducing workload and ensuring starting performance

Active Publication Date: 2013-10-30
SHANGHAI MITSUBISHI ELEVATOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] The technical problem to be solved by the present invention is to provide a method for diagnosing and correcting the weighing value of an elevator, which can simultaneously overcome the problem of inaccurate torque compensation caused by changes in the performance of the weighing device and the traction motor, and achieve the goal without manual intervention. The purpose of maintaining good starting performance of the elevator

Method used

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  • Elevator weighing value diagnosing and revising method
  • Elevator weighing value diagnosing and revising method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] For the elevator whose no-load weighing value WN and half-load weighing value WB are written in the debugging stage, its torque control device can calculate the load component load according to formula 1. For the elevator whose no-load weighing value WN, half-load weighing value WB and full-load weighing value WF are written in the debugging stage, the load component load in the torque control device is calculated as follows:

[0039] UBLD=(W-WB)×CAP / (WB-WN) / 2, W

[0040] Or UBLD=(W-WB)×CAP / (WF-WB) / 2, W≥WB formula (4)

[0041] After calculating the load component load UBLD, calculate the load component torque WGH according to formula 2.

[0042] According to formula 2, the theoretical load component torque values ​​at no-load, half-load and full load can be calculated:

[0043] IN=-CAP / 2×K+R at no load;

[0044] IB=R at half load;

[0045] IF=CAP / 2×K+R at full load.

[0046] When the elevator is running normally, the elevator control system executes ...

Embodiment 1

[0057] In the weighing value diagnosis and correction action flow of Embodiment 1, the load condition of the elevator is judged according to the torque current command value IQS when the traction motor maintains zero speed during the elevator startup phase, and then the stored no-load, half-load and full-load scales are corrected. magnitude. In fact, it is rare for the load in the car to be half-loaded or fully loaded, which means that the cycle of weighing value correction is longer, and the elevator is likely to be in a state of poor starting performance for a long time.

[0058] In order to avoid the occurrence of the above situation, Embodiment 2 makes appropriate modifications to the action flow of weight value diagnosis and correction. When the elevator is running normally, the elevator control system executes repeatedly according to the specified calculation cycle Figure 6 The weighing value diagnosis correction action flow shown:

[0059] Determine which running sta...

Embodiment 3

[0067] In Embodiment 1 and Embodiment 2, it is necessary to manually write in the no-load weighing value WN, the half-load weighing value WB and the full-load weighing value WF by professionals in the elevator debugging stage. After that, the elevator control system according to Equations 1, 2, 3 and 4 calculate the load component load UBLD and the load component torque WGH.

[0068] In order to further reduce the workload in the elevator debugging stage, embodiment 3 cancels the weighing value writing step in the elevator debugging stage, and replaces the empty load, half-load and full-load weighing values ​​written in the elevator debugging stage with the factory default. Load, half load and full load values. When the elevator starts to run normally, use the default no-load, half-load and full-load weighing values ​​to carry out unbalanced load calculation and load component torque calculation for starting weighing action. At the same time, using the weighing value diagnosi...

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Abstract

The invention discloses an elevator weighing value diagnosing and revising method. By means of the elevator weighing value diagnosing and revising method, parameters involved in torque calculation of sharing parts of load can be automatically revised according to weighing values and torque current values output by a weighing device when an elevator is started. After the parameters are revised, the elevator is started again, and torque of the sharing parts of the load can be calculated by a torque control device on the basis of the revised parameters, so that a drag motor can generate torques in advance to accurately compensate imbalanced moment between a lift car and a counter weight after a band-type brake is opened. By means of the elevator weighing value diagnosing and revising method, influence on torque calculation of the sharing parts of the load can be avoided when the weighing device, the drag motor and the like change, and starting performance of the elevator can be ensured when cost is not increased.

Description

technical field [0001] The invention relates to the field of elevator control, in particular to a weighing value diagnosis and correction method for an elevator with a weighing device. Background technique [0002] Today's elevators generally have a load weighing device to detect the load of the elevator car. When the elevator starts, the torque corresponding to the weighing value is added to the output torque of the traction motor to compensate for the weight of the car and the counterweight. The unbalanced moment generated by the difference. When the brake is opened, the above unbalanced moment will be offset by the torque generated by the traction motor, so that the car will not be impacted immediately after the brake is opened. This action is generally called start-up weighing, and the torque control device in the elevator system generally completes the above-mentioned start-up weighing action so as to suppress the start-up shock of the elevator. [0003] figure 1 A g...

Claims

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Application Information

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IPC IPC(8): B66B1/28
Inventor 刘玉兵贺东方
Owner SHANGHAI MITSUBISHI ELEVATOR CO LTD
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