摘要
针对航天器天线板地面展开试验中,气浮轴承重力补偿装置过于依赖高精度大理石平台、测试准备时间过长等问题,提出了悬浮气垫重力补偿装置的模糊PID控制策略。悬浮气垫重力补偿装置,在环氧自流平地面形成气膜,摩擦阻力可控制在5‰以内,满足展开过程要求;采用PID控制实现补偿电缸的恒力输出;针对天线板变形及地面的不平度性影响,提出模糊PID控制策略实现不同工况下补偿装置的自适应调整。经仿真与实验分析可知,该方法能够将恒力控制误差保持在0.7%以内,较经典PID方法具有抗干扰性好和稳定性高的优势。
Aiming at the problems of the air bearing gravity compensation device relying too much on the high-precision marble platform and the long test preparation time in the ground deployment test of the spacecraft antenna board,a fuzzy PID control strategy of the suspended air cushion gravity compensation device is proposed.The suspended air cushion gravity compensation device forms an air film on the epoxy self-leveling ground,and the friction resistance can be controlled within 5%o to meet the requirements of the deployment process.PID control is used to realize the constant force output of the compensation electric cylinder.To address the influence of antenna board deformation and the uneven ground,a fuzzy PID control strategy is proposed to realize adaptive adjustment of the compensation device under different working conditions.The simulation analysis shows that this method can keep the constant force control error within 0.7%,and has the advantages of fast response and high stability compared with the classical PID method.
作者
闫臣挚
赵勇
侯鹏
谢永权
YAN Chenzhi;ZHAO Yong;HOU Peng;XIE Yongquan(Shanghai Key Laboratory of Digital Manufacture for Thin-walled Structures,Shanghai Jiao Tong University,Shanghai 200240,China;Shanghai Satellite Equipment Research Institute,Shanghai 200240,China)
出处
《机械设计与研究》
CSCD
北大核心
2022年第5期142-147,共6页
Machine Design And Research
基金
上海航天先进技术联合研究基金项目(USCAST2019-20)
国家自然科学基金资助项目(51975349)。
关键词
重力补偿
悬浮气垫
模糊PID
恒力控制
稳定性
快速响应
gravity compensation
suspended air cushion
fuzzy PID
constant force control
stability
rapid response
