Vibration Transportation by the Coordination of Self Excited Vibratory Machine with Decentralized Control

分散控制自激振动机配合振动输送

基本信息

批准号：
09650275
负责人：
KURITA Yutaka
金额：
$ 2.37万
依托单位：
The University of Shiga Prefecture
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1999
项目状态：
已结题

项目摘要

This research deals with decentralized transportation system which consists of a large work and some small vibratory machine instead of a large vibratory machine. The merits of this decentralized transportation system are compact in machine size, saving energy in machine operation and layout free in plant design. Vibration of the vibratory machine and movement of the large work are coupled through normal force and friction force. The coupled vibration is nonlinear, and a resonance curve in small excited voltage has a peak in low frequency region and a resonance curve in large excited voltage has a peak in high frequency region. Transportation velocity property shows the same tendency. Driving system of the vibratory machine using self-excited vibration, which is derived from displacement feedback control, follows the resonance frequency change automatically, and the driving system improves vibratory machine eciency and vibration transportation eciency. Velocity feedback control products self-excited vibration in lower frequency region, and realizes vibration transportation of larger work mass. Amplitude constant control of self-excited vibration pulls up the upper limits of vibration amplitude and transportantion velocity. Amplitude control using variable velocity feedback gain starts up self-excited vibration quickly and also suppresses vibration quickly. The vibration which is controlled by variable feedback gain is in a critical limit and therefore, it will not contain any higher-harmonic components, which make some noise. The detail mathematical model consists of equations of motion for the work and the vibratory machine, frictional property between the two bodies, electric dynamics of an electromagnet, power amplier property, velocity feedback controller property and amplitude constant controller property. The simulation using the detail mathematical model predicts actual machine behavior precisely.

这项研究涉及分散的运输系统，该系统由大型工作和一些小型振动机组成，而不是大型振动机。该分散运输系统的优点在机器尺寸上是紧凑的，可以节省机器操作中的能量，并在工厂设计中无效。振动机的振动和大型工作的运动通过正常力和摩擦力结合。耦合振动是非线性的，小型激发电压中的共振曲线在低频区域具有峰值，并且在大型激发电压中的共振曲线在高频区域具有峰值。运输速度特性显示出相同的趋势。振动机的驱动系统使用自振动振动（源自位移反馈控制）自动遵循谐振频率变化，并且驱动系统提高了振动机的振动和振动运输能力。速度反馈控制产品在较低频率区域中自激发振动，并实现了较大的工作质量的振动运输。自激振动的振幅常数控制振动振幅和运输速度的上限。使用可变速度反馈增益启动的振幅控制迅速启动自激发振动，并迅速抑制振动。由可变反馈增益控制的振动在临界限制中，因此，它不会包含任何具有噪音的更高谐波组件。详细数学模型由工作方程和振动机，两个物体之间的摩擦特性，电气磁铁的电动动力学，功率放大器属性，速度反馈控制器属性和振幅常数控制器属性。使用详细数学模型的仿真可以准确预测实际的机器行为。