基于加速度传感器电机振动测量.doc

基于加速度传感器的电机振动测量 摘 要 电机是现代生产中的重要电气设备，从大型的工业电机到小型的家用电器，电机都是随处可见的，电机的故障会对生产造成重大影响，因此需要监测电机的运行状态。 为监测电机的运行状态，本文通过加速度传感器来测量电机振动的大小，并通过微控制器对电机加速度信号进行采集，并将它传输给电脑；利用电脑软件对采集的加速度信号进行频域积分得到速度信号，再与电机振动判断标准进行对比分析,从而判断电机运行状态, 确定修复时机，为电机提供检修依据。 关键词：加速度；振动测量；信号处理；故障分析 Measure the vibration of motor based on the acceleration sensor Abstract The electric motor is one sort of the most important electric equipments in modem manufacturing．From large industrial motors to small appliances, electric motors are everywhere. Its failure would produce a significant impact on the motor, therefore, we need to monitor the operating status of the motor. In this paper, in order to monitor the motor running, size of the motor vibration is measured by the acceleration sensor, and uses the microcontroller to collect the motor acceleration signal and transfer it to the computer. The acceleration frequency-domain signal is integrated into the speed signal in the computer, and then the speed signal is compared with the motor vibration criteria, to provide the basis for the maintenance of motor. We can determine the timing of repair. Keywords: Acceleration sensor, Vibration Measurement, Signal Processing, Failure Analysis 目 录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc390342568 第1章 绪论 PAGEREF _Toc390342568 \h 1 HYPERLINK \l _Toc390342569 1.1 引言 PAGEREF _Toc390342569 \h 1 HYPERLINK \l _Toc390342570 1.2 电机振动特性 PAGEREF _Toc390342570 \h 1 HYPERLINK \l _Toc390342571 1.2.1 振动参数 PAGEREF _Toc390342571 \h 2 HYPERLINK \l _Toc390342572 1.2.2 振动标准 PAGEREF _Toc390342572 \h 3 HYPERLINK \l _Toc390342573 第2章 电机振动测量装置设计 PAGEREF _Toc390342573 \h 6 HYPERLINK \l _Toc390342574 2.1 采集模块介绍 PAGEREF _Toc390342574 \h 6 HYPERLINK \l _Toc390342575 2.1.1 MMA8452加速度传感器 PAGEREF _Toc390342575 \h 7 HYPERLINK \l _Toc390342576 2.1.2 控制器NXP ARM LPC1114 PAGEREF _Toc390342576 \h 8 HYPERLINK \l _Toc390342577 2.1.3 电源模块 PAGEREF _Toc390342577 \h 8 HYPERLINK \l _Toc390342578 2.2 接口转换模块设计 PAGEREF _Toc390342578 \h 9 HY