机构动态优化在工业平缝机减振中的应用  

Application of Linkage′s Dynamic Optimization to Vibration Reduction of Industrial Sewing Machine

作　　者：王永泉[1] 陈花玲[1] 孙富贵[1] 陈江义[1] 李时光[1] 

机构地区：[1]西安交通大学机械工程学院,西安710049

出　　处：《机械科学与技术》2005年第8期947-949,968,共4页Mechanical Science and Technology for Aerospace Engineering

摘　　要：通过对机构中构件的质量和形状等进行优化设计以降低其运转时产生的惯性力或力矩,是抑制设备振动的一种主动方法。本文以工业平缝机的减振为应用背景,基于复数矢量法和机构环路方程,对一类平面六杆机构的惯性力进行了分析推导;以其谐波分量的均方根值为目标函数,进行了机构的优化设计,并据此对原有机构进行了合理改进。实测表明,该法对于机器减振具有良好的效果。Optimizing the scheme of mass and shape of bars in a linkage to decrease its inertial force and/ or moment, is a kind of active method for equipment＇s vibration control. For vibration reduction of industrial sewing machines, this paper firstly analyzes and calculates the inertial force of a type of six-bar linkage, based on the complex vector method and the linkage＇s loop equation. Since the periodical inertial force or moment can be expressed as Fourier series, and its harmonious component is more closely related to the machinery＇s dynamic response, the root-mean square （RMS） of the force＇s harmonious component is proposed as an objective function of the optimization. According to the objective function, the linkage is optimally designed and logically ameliorated. The actual measurements indicate that the method has favorable effect on reducing the vibration of the machinery： after being ameliorated, its vibration displacement descends from 315/μm to about 162/μm.

关 键 词：惯性力 复矢量法 优化设计 减振 

分 类 号：TH22[机械工程—机械制造及自动化]