权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

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.

本文研究的是一种分散运输系统，该系统由大型工作装置和一些小型振动机组成，而不是大型振动机。这种分散运输系统的优点是机器体积小，机器运行节能，工厂设计不需要布置。振动机的振动和大工件的运动是通过法向力和摩擦力耦合的。耦合振动是非线性的，小激励电压下的共振曲线在低频区有峰值，大激励电压下的共振曲线在高频区有峰值。输运速度特性也表现出相同的趋势。振动机的驱动系统采用位移反馈控制导出的自激振动，自动跟随共振频率的变化，提高了振动机的效率和振动输送效率。速度反馈控制产生低频区自激振动，实现较大功质量的振动输送。自激振动的幅值恒控制提高了振动幅值和传递速度的上限。采用变速反馈增益的幅度控制能快速启动自激振动，也能快速抑制振动。由变反馈增益控制的振动处于临界极限，因此不会包含产生噪声的高次谐波分量。详细的数学模型包括功和振动机的运动方程、两体之间的摩擦特性、电磁铁的电动力学、功率放大器特性、速度反馈控制器特性和振幅常数控制器特性。采用详细的数学模型进行仿真，准确地预测了实际机器的行为。