Visual composite positioning for precision microassembly

Xiaodong WANG, Shipeng CUI, Zheng XU, Shiqin LU
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Abstract

åŸºäºŽæœºå™¨è§†è§‰çš„å¾®å°ç‰¹å¾å®šä½æ˜¯ç²¾å¯†è‡ªåŠ¨åŒ–è£ é çš„å ³é”®çŽ¯èŠ‚ï¼Œå¤–ç•Œå¹²æ‰°å’Œé›¶ä»¶æœ¬èº«å·®å¼‚ç­‰å®¹æ˜“å¼•èµ·è§†è§‰å¼•å¯¼é”™è¯¯ï¼Œå½±å“è£ é æˆåŠŸçŽ‡ï¼Œå› æ­¤æå‡ºä¸€ç§ç”±ç²—å®šä½ä¸Žç²¾å®šä½ä¸¤æ­¥ç»„æˆçš„å¤åˆå®šä½æ–¹æ³•ã€‚é¦–å ˆé€šè¿‡åŸºäºŽå·ç§¯ç¥žç»ç½‘ç»œçš„ç›®æ ‡æ¡†æ£€æµ‹ç®—æ³•æå–æ„Ÿå ´è¶£åŒºåŸŸå®žçŽ°ç²—å®šä½ï¼Œåœ¨æ­¤åŸºç¡€ä¸Šé€šè¿‡è½®å»“å‡ ä½•ç‰¹å¾é å‡†çš„æ–¹å¼å®žçŽ°é›¶ä»¶ç²¾å®šä½ï¼Œç®—æ³•ä¸­è¿˜é‡‡ç”¨è‡ªåŠ¨æ ‡æ³¨è¾ åŠ©çš„åŠ¨æ€å­¦ä¹ æœºåˆ¶è§£å†³ä¸åŒæ‰¹æ¬¡é›¶ä»¶é—´å·®å¼‚å¯¼è‡´å®šä½å¤±è´¥çŽ‡è¾ƒé«˜çš„é—®é¢˜ã€‚åœ¨è‡ªç ”çš„è£ é è®¾å¤‡ä¸Šå¯¹è¯¥æ–¹æ³•è¿›è¡Œæµ‹è¯•ï¼Œåˆ†æžäº†äº®åº¦ã€ç¦»ç„¦å’Œä½å§¿å˜åŒ–å¯¹è§†è§‰å®šä½ç®—æ³•é²æ£’æ€§çš„å½±å“ï¼Œå¹¶è¿›è¡Œäº†å®šä½ç²¾åº¦åŠå°æ‰¹é‡è£ é å®žéªŒæµ‹è¯•ã€‚ç»“æžœè¡¨æ˜Žï¼šæœ¬æ–‡æ–¹æ³•åœ¨å¤šç§å¹²æ‰°ä¸‹çš„è£ é æˆåŠŸçŽ‡è¾¾åˆ°97%,视觉定位的绝对精度与重复精度均优于2 μmï¼Œè£ é ç²¾åº¦ä¼˜äºŽ10 μmï¼Œèƒ½å¤Ÿæ»¡è¶³ç²¾å¯†å¾®è£ é å¯¹å®šä½ç®—æ³•ç²¾åº¦ä¸Žç¨³å®šæ€§çš„è¦æ±‚ã€‚
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用于精密微装配的视觉复合定位
基oºŽæœºå™¨è§†è§‰çš„微小特征定o½æ˜¯ç²¾å¯†è‡ªåŠ¨åŒ–è£éçš„å³é”®çŽ¯èŠ‚,外界干扰和零o»¶æœ¬èº«å·®å¼‚ç-‰å®¹æ˜“引起视觉引导错误,影响è£éæˆåŠŸçŽ‡ï¼Œå›æ-¤æå‡ºo¸€ç§ç”±ç²—定o½o¸Žç²¾å®šo½o¸¤æ—¥ç»„成的复合定o½æ–¹æ³•ã€‚首åˆé€šè¿‡åŸºoºŽå·ç§¯ç¥žç»ç½‘络的目æ‡æ¡†æ£€æµ‹ç®—法提取感å´è¶£åŒºåŸŸå®žçŽ°ç²—定o½ï¼Œåœ¨æ-¤åŸºç¡€o¸Šé€šè¿‡è½®å»“å‡o½•ç‰¹å¾éå‡†çš„方式实现零o»¶ç²¾å®šo½ï¼Œç®—法¸o -还采用自动æ‡æ³¨è¾åŠ©çš„动态å-¦o¹æœºåˆ¶è§£å†³o¸åŒæ‰¹æ¬¡é›¶o»¶é—´å·®å¼‚导致定o½å¤±è´¥çŽ‡è¾ƒé«˜çš„问题。在自ç”çš„è£éè®¾å¤‡o¸Šå¯¹è¯¥æ–¹æ³•è¿›è¡Œæµ‹è¯•ï¼Œåˆ†æžoº†oº®åº¦ã€ç¦»ç„¦å’Œo½å§¿å˜åŒ–对视觉定o½ç®—法鲁棒性的影响,并进行oº†å®šo½ç²¾åº¦åŠå°æ‰¹é‡è£éå®žéªŒæµ‹è¯•ã€‚结果表明:本文方法在多种干扰o¸‹çš„è£éæˆåŠŸçŽ‡è¾¾åˆ°97%,视觉定o½çš„绝对精度o¸Žé‡å¤ç²¾åº¦å‡o¼˜oºŽ2μm,è£éç²¾åº¦o¼˜oºŽ10μm,能够满足精密微è£éå¯¹å®šo½ç®—法精度o¸Žç¨³å®šæ€§çš„要求。
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来源期刊
Guangxue Jingmi Gongcheng/Optics and Precision Engineering
Guangxue Jingmi Gongcheng/Optics and Precision Engineering Materials Science-Electronic, Optical and Magnetic Materials
CiteScore
2.40
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0.00%
发文量
95
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