基于改进粒子群算法的机构运动精度可靠指标的求解

摘要

以具有杆长尺寸误差的平面连杆机构为研究对象,运用运动精度可靠指标的几何原理,基于改进粒子群算法,提出一种求解机构运动精度可靠指标的计算方法。经算例验证,该方法简便实用,为机构运动精度可靠指标的计算提供了新的有效途径,且具有令人满意的计算精度。%The planar linkage mechanism with error of bar length is studied.According to geometrical theory of reliability index,a kinematics accuracy reliability index computation method of mechanism is presented on the basis of improved particle swarm optimization.Simulations results on kinematics accuracy reliability index of mechanism demonstrate that the proposed method is effective and practical,and provides an effective approach to calculate the kinematics accuracy reliability index.