摘要
传统气缸因复杂的摩擦特性难以实现高精度控制,基于振动减摩原理,开发了一款新型高频纵振减摩气缸。在保证密封性能的前提下,凭经验在活塞上设计了6种不同槽口夹角和槽宽的密封槽,并根据实际PID运动轨迹跟踪控制的精度情况,选取其中最优的密封槽。通过模态分析、谐响应分析和阻抗测试,确定了所开发新型气缸的一阶纵振共振频率为6328 Hz。摩擦力测试结果表明:高频振动确实可以减小气缸的摩擦,且激励电压越大减摩效果越好;最大静摩擦力最大减少了约64.46%,动摩擦力最大减少了约63.62%。
Conventional pneumatic cylinders are difficult to achieve high-precision control due to complex friction characteristics.Based on the principle of vibration friction reduction,a novel high-frequency longitudinal vibration friction reduction pneumatic cylinder was developed.On the premise of ensuring the sealing performance,six sealing grooves with different groove angles and groove widths were designed on the piston with experience,and the optimal sealing groove was selected according to the accuracy of the actual PID motion trajectory tracking control.The first-order longitudinal resonance frequency of the developed novel pneumatic cylinder was determined to be 6328 Hz by modal analysis,harmonic response analysis and impedance testing.The friction test results show that high-frequency vibration can indeed reduce the friction of the pneumatic cylinder,and the higher the excitation voltage,the better the friction reduction effect.The maximum static friction was reduced by about 64.46%and the maximum dynamic friction was reduced by about 63.62%.
作者
吴洁
刘磊
舒春辉
吕盘松
浦晨玮
刘阳
钱鹏飞
WU Jie;LIU Lei;SHU Chun-hui;LV Pan-song;PU Chen-wei;LIU Yang;QIAN Peng-fei(School of Mechanical Engineering,Jiangsu University,Zhenjiang,Jiangsu 212013;Ningbo Xinchao Automatization Component Co.,Ltd.,Ningbo,Zhejiang 315500)
出处
《液压与气动》
北大核心
2023年第3期37-42,共6页
Chinese Hydraulics & Pneumatics
基金
国家自然科学基金(52075223)
中国博士后基金(2021M691308)
江苏省博士后基金(2021K261B)
江苏省大学生创新创业训练(202210299039Z)
江苏省研究生科研与实践创新计划(SJCX22_1845)。
关键词
气缸
活塞密封槽
轨迹跟踪
高频振动
摩擦特性
pneumatic cylinder
piston sealing grooves
trajectory tracking
high-frequency vibration
friction characteristics
