CAJ | 학술논문

考虑行星滚柱丝杠副传动间隙、啮合面接触变形、丝杠扭转与拉压变形、加工误差、载荷分布、摩擦力及惯量等因素，运用键合图理论建立行星滚柱丝杠副动态特性分析模型，推导其状态方程。引入功率结型结构描述传动间隙引起的螺纹啮合面间接触力、阻尼力非线性分段特性，用 LuGre 模型反映啮合面摩擦力对行星滚柱丝杠副动态特性影响。以一组行星滚柱丝杠副参数为例，将其阶跃速度响应结果与 Adams 仿真结果进行对比，验证模型的正确性。分别研究丝杠转速、滑滚比对摩擦力响应特性影响及传动间隙、加工误差对刚度特性影响。分析结果有助于提高行星滚柱丝杠副动态精度及工作稳定性。
고필행성곤주사강부전동간극、교합면접촉변형、사강뉴전여랍압변형、가공오차、재하분포、마찰력급관량등인소，운용건합도이론건립행성곤주사강부동태특성분석모형，추도기상태방정。인입공솔결형결구묘술전동간극인기적라문교합면간접촉력、조니력비선성분단특성，용 LuGre 모형반영교합면마찰력대행성곤주사강부동태특성영향。이일조행성곤주사강부삼수위례，장기계약속도향응결과여 Adams 방진결과진행대비，험증모형적정학성。분별연구사강전속、활곤비대마찰력향응특성영향급전동간극、가공오차대강도특성영향。분석결과유조우제고행성곤주사강부동태정도급공작은정성。
Based on bond graph theory,a dynamic analysis model of planetary roller screw mechanism was presented,in which transmission clearances,contact deformations of threads,torsion and compression deformations of screw,machining errors,load distribution of threads,friction and inertias were taken into consideration.Meanwhile,the state equations of the model were derived.In the model,for describing the nonlinear and stepped properties of contact force and damping force caused by transmission clearances between thread surfaces,the concept of switched power junctions was introduced,and the influence of friction on dynamic characteristics of planetary roller screw mechanism was considered based on the LuGre model.Taking some planetary roller screw mechanism as an example,the calculated step response of velocity was compared with the result from Adams simulation to verify the effectiveness of the model.Then, the influences of rotating speed of screw and slide roll ratio on friction force response characteristics,and the influences of transmission clearances and machining errors on stiffness characteristics were investigated.The results can help to improve the dynamic accuracy and stability of planetary roller screw mechanisms.