An assembly test platform capable of micrometer positioning, visual and force sensing detection, is developed for suits docking in ignition target final assembly. The classification and discrimination of target parts and the corresponding image detection are adopted to realize closed-loop position control. The target suits docking process is analyzed, and a assembly force model is established. An assembly force control method is proposed based on the established model. Finally, targets positioning and docking experiments are carried out using the developed auto-assembly system, and the system force control, assembly accuracy and efficiency are verified.
[1] 吴文荣,余大海,裘祖荣,等.毫米器件半自动微装配系统研制[J].传感器与微系统,2013,32(1):83-86,90. Wu W R, Yu D H, Qiu Z R, et al. Development of semi-automatic micro-assembly system for millimeter device[J]. Transducer and Microsystem Technology, 2013, 32(1): 83-86,90.[2] 余大海,吴文荣,沈飞,等.点火靶半腔套装实验系统设计[J].强激光与粒子束,2014,26(2):158-163. Yu D H, Wu W R, Shen F, et al. Precision robotic system designed for hohlraum assembly[J]. High Power Laser and Particle Beams, 2014, 26(2): 158-163.[3] 张娟,徐德,张正涛,等.基于多路显微视觉的微零件自动对准策略[J].机器人,2014,36(1):69-75. Zhang J, Xu D, Zhang Z T, et al. An automatic alignment strategy of micro parts based on microscope vision systems[J]. Robot, 2014, 36(1): 69-75.[4] 罗李焱,徐德,张正涛,等.显微视觉系统对柱状微零件自动聚焦技术研究[J].计算机工程与应用,2014,50(8):122-126,142. Luo L Y, Xu D, Zhang Z T, et al. Autofocus method of microscope vision system for columnar micro-parts[J]. Computer Engineering and Applications, 2014, 50(8): 122-126,142.[5] 刘立平,王晓东,陈勇,等.微小易损零件的精密装配及接触控制[J].仪表技术与传感器,2013(1):47-49,55. Liu L P, Wang X D, Chen Y, et al. Precision assembly and contact control of vulnerable miniature parts[J]. Instrument Technique and Sensor, 2013(1): 47-49,55.[6] Corke P I. Visual control of robot manipulators -- A review[M]//Visual Servoing. Singapore:World Scientific Publishing, 1994: 1-31.[7] 席文明,颜景平,罗翔.位置、力反馈和视觉融合控制的机器人轴孔装配[J].制造业自动化,2001,23(5):43-45,47. Xi W M, Yan J P, Luo X. The assembly of shaft and hole controlled by position, force feedback and vision[J]. Manufacturing Automation, 2001, 23(5): 43-45,47.[8] 尹昕,卢桂章,赵新.大范围多目标微操作的目标视觉跟踪实现策略[J].高技术通讯,2006,16(2):143-148. Yin X, Lu J Z, Zhao X. The realization method of object vision tracking in wide scope of micro manipulation[J]. High Technology Letters, 2006, 16(2): 143-148.[9] Liu S, Xu D, Zhang D P, et al. High precision automatic assembly based on microscopic vision and force information[J]. IEEE Transactions on Automation Science and Engineering, 2014, 13(1): 382-393.[10] Lee J. Apply force/torque sensors to robotic applications[J]. Robotics, 1987, 3(2): 189-194. [11] Carelli R, Kelly R, Ortega R. Adaptive force control of robot manipulators[J]. International Journal of Control, 1990, 52(1): 37-54. [12] Simunovic S N. Parts mating theory for robot assembly[R]//Water Resources and Environmental Engineering Research Report. Dearborn, USA: Society of Manufacturing Engineers, 1979: 183-193.[13] Whitney D E. Quasi-static assembly of compliantly supported rigid parts[J]. Journal of Dynamic Systems, Measurement and Control, Transactions of the ASME, 1982, 104(1): 65-77. [14] 赵锡芳,周鉴如,李小兵.在机器人轴孔装配中应用力传感器搜索找孔研究[J].上海交通大学学报,1995,29(5):93-96. Zhao X F, Zhou J R, Li X B. Research on hole searching in robotic peg-hole mating with force sensor[J]. Journal of Shanghai Jiaotong University, 1995, 29(5): 93-96.[15] 张锟,韦庆,常文森.一种基于力!/!位混合控制进行插孔作业的策略[J].机器人,2002,24(1):44-48. Zhang K, Wei Q, Chang W S. An insertion strategy based on force/position hybrid control[J]. Robot, 2002, 24(1): 44-48.