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Brake glide quantity soft measuring method and measuring device

A technology of soft measurement and main control module, applied in measuring devices, devices using electric/magnetic methods, measuring acceleration, etc., can solve problems such as distortion

Pending Publication Date: 2017-08-11
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the measurement accuracy of the accelerometer is high, due to the influence of the "translation item" and "trend item" in the integration process, the results obtained by this method often appear distorted after two integrations

Method used

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  • Brake glide quantity soft measuring method and measuring device
  • Brake glide quantity soft measuring method and measuring device
  • Brake glide quantity soft measuring method and measuring device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] figure 1 It is an overall block diagram of the measuring device of the present invention. The soft measuring device for the brake sliding amount of the crane in the present invention includes two parts: a data collector 1 and a data processing module 2 . Among them, the data collector is set on the position where the crane hook is in contact with the heavy object. The data collector is composed of MEMS sensors 1-1, main control module 1-2 and communication management module 1-3 connected in series. The communication management module 1- 3 is connected to the data processing module 2 as the output end of the data collector 1 . Among them, the MEMS sensor 1-1 samples the acceleration and angular velocity information of the hoisting system of the crane; the main control module 1-2 is responsible for controlling the MEMS sensor 1-1 and storing the collected acceleration and angular velocity information; the communication management module 1-3 is composed of The main contr...

Embodiment 2

[0086] refer to figure 2 . Further, considering the requirements of measurement accuracy, the present invention improves the above-mentioned measurement method at the same time, and corrects the measurement error of the accelerometer by increasing the calibration of the MEMS sensor (accelerometer calibration). In order to further reduce measurement and calculation errors, Kalman filtering can be performed on the collected information before data processing, so as to keep only valid information and interfere with invalid data. The specific improvements are as follows:

[0087] In the first step of the measurement method described in embodiment 1, the process of calibrating the MEMS sensor is as follows:

[0088] The accelerometer error model on which the calibration is based is as follows:

[0089] A x =B x +S x V x +E xy V y +E xz V z

[0090] A y =B y +E yx V x +S y V y +E yz V z

[0091] A z =B z +E zx V x +E zy V y +S z V z

[0092] In the for...

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Abstract

The invention provides a brake glide quantity soft measuring method and a measuring device. According to the invention, at the weight hanging part of a crane, a data acquisition is arranged to acquire the acceleration velocity data and the angular velocity data of the weight hanging system, and transmits the data to a host computer where the data are calculated according to a non-linear dynamic differential equation for the weight hanging system built on the Lagrangian equation to obtain the brake glide quantity of the crane. Compared with the currently available system, all the measuring method needs to do is introduce a data acquisition device at the weight hanging part of the crane, free of the mechanical and circuit modifications to the crane loads and the brake controller. With the method and the device, it is possible to automatically measure the brake glide quantity of a crane, and the measuring accuracy is increased, ensuring the safe operations of the crane. In addition, the power consumption of the measuring system is planned, and the repetitive battery replacement becomes unnecessary; and at the same time, the wireless manner can be selected for data transmission, making the transmission not limited to distances. Therefore, with the method and the device, it is possible to estimate the brake performances of the crane in real time.

Description

technical field [0001] The invention belongs to the field of crane operation state parameter detection, and in particular relates to a soft measurement method for the braking sliding amount of a crane. Background technique [0002] Lifting and transporting machinery refers to electromechanical equipment used for vertical lifting or vertical lifting and horizontal moving of heavy objects. With the development of modern society, lifting and transportation machinery has been widely used in the fields of material lifting, transportation, loading and unloading, installation and personnel transportation. It not only greatly reduces labor intensity, but also effectively improves labor efficiency. However, while creating benefits and providing convenience for people, the safety issues of lifting and transporting machinery are becoming increasingly prominent. How to make the lifting and transportation machinery run safely and efficiently has become the top priority of safe producti...

Claims

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Application Information

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IPC IPC(8): G01P15/08G01P3/44B66C13/16
CPCG01P3/44G01P15/08B66C13/16G01P2015/0862Y02T90/00
Inventor 胡建中王鹏飞许飞云贾民平黄鹏
Owner SOUTHEAST UNIV
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