Vibration suppression of a large flexible spacecraft for on-orbit operation

来源 :Science China(Information Sciences) | 被引量 : 0次 | 上传用户:lihan5200
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Flexible appendages, such as solar panels, communication antennas and other large structures, are mounted on the base of a space robot and target satellite. The vibration of the flexible structure is excited by operations of a space manipulator. It is very challenging to control the vibration of large flexible appendages for on-orbit operation and, especially when the manipulator operates a non-cooperative target with unknown structural parameters and vibration information. In this study, a hybrid control method is proposed based on wave-based control and PD control methods to control the motion of a manipulator while suppressing the vibration of appendages. First, the rigid-flexible coupled dynamic model of a compounded system is established.This is followed by designing a hybrid control strategy combining wave-based control and PD control for restto-rest maneuvers based on the characteristics of the compounded system. Finally, the simulation of a 3D compounded system is provided to verify the effectiveness of the presented approach. The simulation results indicate that the space robot can successfully berth the target while suppressing the vibrations of the structure. The vibration of the flexible structure is excited by operations of a space manipulator. It is very challenging to control the vibration of large flexible appendages for on-orbit operation and, especially when the manipulator operates a non-cooperative target with unknown structural parameters and vibration information. In this study, a hybrid control method proposed is based on wave-based control and PD control methods to control the motion of a manipulator while suppressing the vibration of appendages. First, the rigid-flexible coupled dynamic model of a compounded system is established. This is followed by designing a hybrid control strategy and wave-based control and PD control for restto- rest maneuvers based on the characteristics of the compounded system. Finally, the simulation of a 3D compounded system is provided to v erify the effectiveness of the presented approach. The simulation results indicate that the space robot can successfully berth the target while suppressing the vibrations of the structure.
其他文献
对应用低强度氦-氖激光照射综合治疗512人角膜穿通伤、烧伤、溃疡和继发性角膜内皮-上皮病变结果的分析表明,该疗法可以显著提高疗效,缩短炎症过程和加快上皮形成。氦-氖激
随着钨钼稀土资源税“从价计征”改革的尘埃落定,“不增加企业税负的原则”的提法让众多企业松了一口气。企业对新政非常关心,尤其在矿价大幅下跌、矿山企业效益不好的情况下
由美国最具权威的消费者联盟主办的《消费者报》最近公布了本年度美国最佳汽车的评选结果。 根据评选结果,德国大众汽车的帕萨特获轿车第一名,取代了连续3年获冠军的日本丰
全国薄膜技术学术研讨会议是中国真空学会薄膜专业委员会的重要学术活动之一,宗旨是推动我国薄膜技术领域的学术交流与合作,提高创新能力,推动相关产业的发展。“TFC’17全国
用50只鸽观察利尿酸(EA)或苦毒毛旋花子苷(ouabain)、缺氧和高K~+Ringer液灌注对蜗内直流电位D(DC电位)的影响。应用与双通道电位计相连的装满160mmol/L KCl溶液的微电极测
猴子听说牛老大要请一名家庭教师,于是前往应聘。猴子在水田里找到了正在耕作的牛老大,双方商定了相关事宜。第二天,猴子要去任教。临走时,他跳到水塘里把身子涂了一通污浊泥
YAG激光治疗的优点是出血少、反应轻、瘢痕小、愈合快。而最突出的优点是YAG激光可通过光导纤维传输,经光纤端聚焦在1~2mm范围的病变组织,准确地将病变组织凝固,碳化或气化。
视网膜中央静脉阻塞与脑假瘤有关,但是很少作为一种最初的临床表现。作者报告1例46岁男性明显肥胖的患者。有高血压病史,未特别提到单侧肾病史。1978年1月因双眼前有漂浮物3
克罗德·朗兹曼,1925年11月27日生于巴黎,1943年成为克莱蒙·费朗市布莱兹·帕斯卡尔中学抵抗运动的组织者之一。他参加了城市地下斗争,后加入奥维涅地区的丛林游击队。他因
With the support by the National Natural Science Foundation of China,the research teams led by Prof.Liu Bing(刘兵),Tang Fuchou(汤富酬)and Yuan Weiping(袁卫平)re