Load measurement method of vertical shaft construction hoisting system based on torque current
-
摘要: 目前矿山提升系统载荷测量方式主要是通过在井底加装称重传感器测量载荷，但该方法无法应用于立井施工提升系统。通过分析钢丝绳张力与载荷的函数关系来测量提升载荷的方法实现了载荷的动态测量，但传感器的安装和钢丝绳自身塑变导致的测量精度问题一直难以解决，带来安全隐患。为解决上述问题，针对提升系统的电气传动系统为异步电动机交-交变频传动矢量控制的情况，根据变频器可直接输出转矩电流这一特性，提出了一种以转矩电流为测量信号的提升载荷测量方法。通过建立提升系统数学模型和动力学分析，确定了转矩电流与提升载荷的相关性；在此基础上引入粒子群优化最小二乘支持向量机，建立转矩电流与提升载荷在加速、匀速和减速3个运行阶段的关系模型；在各运行阶段给载荷施加不同的扰动，通过Matlab仿真分析提升载荷与转矩电流的关系。仿真结果表明，提升载荷与转矩电流在各运行阶段都存在对应关系，通过转矩电流可以精确地还原出提升载荷及其波动情况。
-
关键词:
- 立井施工提升系统 /
- 提升载荷测量 /
- 转矩电流 /
- 粒子群优化最小二乘支持向量机
Abstract: At present, load measurement method of mine hoisting system is mainly to measure load by adding a weighing sensor at the bottom of the shaft, but this method cannot be applied to vertical shaft construction hoisting system.The method of measuring hoisting load by analyzing functional relationship between wire rope tension and load has realized dynamic measurement of load. However, it is difficult to solve measurement accuracy problem caused by sensor installation and plastic deformation of wire rope itself, which brings hidden danger of safety. To solve the above problems, in view of situation that electric drive system of hoisting system is AC/AC inverter vector control of asynchronous motor, a hoisting load measurement method based on torque current was proposed according to torque current can be directly output by inverter. By establishing mathematical model and dynamic analysis of hoisting system, correlation between torque current and hoisting load is determined; on the basis, particle swarm optimization-least squares support vector machine was introduced to establish relationship model between torque current and hoisting load at three running stages of acceleration, uniform speed and deceleration;different disturbances are applied to the load at each running stage, and the relationship between hoisting load and torque current is analyzed by Matlab simulation. The simulation results show that there is a correspondence between hoisting load and torque current at each running stage, the torque current can accurately restore the hoisting load and its fluctuation. -
-
期刊类型引用(4)
1. 吴杰，文轲，孙佳，蔡亚洲，金晓龙. 考虑负载不确定的异步电机效率的优化控制. 机电产品开发与创新. 2023(03): 136-140 . 
百度学术
2. 孟涛，王政. 提升交流电机与提升载荷的关联性研究. 煤矿机械. 2022(10): 55-58 . 百度学术
3. 吴杰，文轲，孙佳，蔡亚洲，金晓龙. 异步电动机负载功率监测与优化. 微电机. 2022(12): 28-32+38 . 百度学术
4. 姚纪凯. 近浅埋煤层立井施工注浆过承压含水层技术应用. 陕西煤炭. 2021(05): 147-150+179 . 百度学术
其他类型引用(1)
计量
- 文章访问数: 42
- HTML全文浏览量: 8
- PDF下载量: 15
- 被引次数: 5
下载:
