摊铺机熨平板多频振动测试系统研究

发布时间：2018-04-30 14:44

本文选题：振动系统 + 频率检测　；参考：《长安大学》2015年硕士论文

【摘要】：摊铺机熨平板振动系统振动频率和摊铺机摊铺密实度有着很密切的联系,针对很多类型的摊铺机不能实时反馈熨平板振动系统振动频率,对摊铺机熨平板振动系统振动频率的控制是一开环控制这一情况,为了进一步提高摊铺机摊铺密实度,本文提出并且开发出一个能实时检测摊铺机熨平板振动系统振动频率的多频测试系统。对摊铺机熨平板振动系统振动频率与摊铺密实度之间的关系进行了理论和实验研究,得到了摊铺机熨平板振动器振动频率、振捣装置振捣频率以及摊铺速度与摊铺密实度之间的关系曲线图。测量频率的方法很多,对比分析了检测频率的各种方法,提出了采用基于离散型傅里叶变换的软件测频法来实现对摊铺机熨平板振动系统振动频率的检测。对多频振动测试系统的总体方案进行了设计,给出了多频振动测试系统的基本组成。对摊铺机熨平板多频振动测试系统的硬件部分进行了设计,设计出了加速度信号和速度信号的调理电路原理图以及测试系统的底板电路原理图。对摊铺机熨平板多频振动测试系统的软件部分进行了设计,搭建了测试系统的软件工作平台,设计了信号采集模块驱动程序以及应用程序,提出了一种采用基于基二时分的傅里叶变换法来减少计算机运算量的方法。对摊铺机多频振动测试系统进行了实物设计,在实验室及施工现场进行了相关的实验验证,实验结果表明,通过摊铺机熨平板多频振动测试系统测出来的测量值是正确的,通过摊铺机调节装置调节出来的调节值存在一定的误差,并不能代表摊铺机熨平板振动系统振动频率的实际值。
[Abstract]:The vibration frequency of paver ironing plate vibration system is closely related to the spreading density of paver. For many kinds of pavers, they can not feedback the vibration frequency of ironing plate vibration system in real time. The control of vibration frequency of paver ironing plate vibration system is an open-loop control. In order to further improve the spreading density of paver, This paper presents and develops a multi-frequency measuring system which can detect the vibration frequency of paver ironing plate vibration system in real time. The relationship between vibration frequency and spreading density of paver ironing plate vibration system is studied theoretically and experimentally, and the vibration frequency of paver ironing plate vibrator is obtained. The curve diagram of the relation between the frequency of vibrating and spreading speed and the degree of spreading density. There are many methods to measure the frequency. This paper compares and analyzes the various methods of detecting the frequency, and puts forward the software frequency measurement method based on discrete Fourier transform to detect the vibration frequency of the paver ironing plate vibration system. The overall scheme of the multi-frequency vibration testing system is designed, and the basic composition of the multi-frequency vibration testing system is given. The hardware part of the testing system for multi-frequency vibration of paver ironing plate is designed. The circuit schematic diagram of acceleration signal and velocity signal and the circuit diagram of bottom board of test system are designed. The software part of the testing system for multi-frequency vibration of paver ironing plate is designed. The software working platform of the testing system is built, and the driver program and application program of signal acquisition module are designed. In this paper, a method of reducing computer operation by Fourier transform based on basis 2 time division is proposed. The multi-frequency vibration testing system of paver is designed and verified in laboratory and construction site. The experimental results show that the measured value of multi-frequency vibration test system of paver ironing plate is correct. There is a certain error in the adjustment value by the paver regulating device, which can not represent the actual value of vibration frequency of the paver ironing plate vibration system.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U415.521

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