An automatic calibration method for an elevator weighing device

Abstract

The invention discloses an automatic calibration method for an elevator weighing device, which is suitable for elevator equipment, comprising: step S1, obtaining the weighing value, actual torque current value and current Running direction; step S2, according to the weighed value, use a preset estimation formula including a plurality of preset coefficients to estimate the expected value of torque current of the elevator; step S3, calculate the difference between the expected value of torque current and the actual torque current value Error value; step S4, using an adaptive filtering algorithm to adjust a plurality of preset coefficients in the preset estimation formula according to the error value, so as to minimize the performance function of the error value, and then output the preset coefficients. Beneficial effects: the calculation coefficient of the elevator torque and current estimation formula is corrected by the adaptive filtering algorithm, so that the calculated starting load component torque is more accurate, thereby improving the comfort of the elevator when starting; the method has a small amount of calculation and low data storage requirements Low and adaptable.

Description

technical field [0001] The invention relates to the technical field of elevator control systems, in particular to an automatic calibration method for an elevator weighing device. Background technique [0002] At present, in order to obtain good starting performance and carry out overload judgment, the elevator is usually equipped with a load weighing device in the elevator car. When the elevator starts, according to the load condition of the elevator, the weighing device applies the corresponding starting load component torque to make the elevator When the traction motor brake is opened, the force on the elevator car is basically balanced, thereby improving the ride comfort when the elevator starts. In this case, there are higher requirements for the accuracy and reliability of the elevator weighing device. If the weighing device is inaccurate, it will cause poor starting comfort, and even the overload situation cannot be judged, thereby posing safety hazards. [0003] The...

AI Technical Summary

Problems solved by technology

Theoretically speaking, this invention can indeed overcome the impact on the calculation of the load component torque when components such as the weighing device and traction machine change, but several embodiments given in the patent have strict data screening conditions, or require The shortcomings of storing a large amount of data, or a large amount of calculation, and failing to solve the problem of accuracy drop caused by friction and data acquisition errors, in some cases even cause large deviations

Images