The manipulator’s forward and inverse kinematics are analyzed with D-H transformation matrix, and a deviation model for solving the design problem of strain gauge automated assembly system is provided. This method not only avoids global calibration of the system, but also effectively solves the problem of trajectory planning. Meanwhile, the machine vision technology is used to determine the center position of the front actuator, which improves the system positioning accuracy. Prototype test results show that the design goals and requirements are achieved in terms of the speed, accuracy and consistency of strain gauge mounting. The system can be put into the industrial application of automatic mounting of strain gauges. During production process, the system can complete 20 times mounting per minute, and the offset accuracy is less than 0.1 mm, the deflection accuracy is less than 1°.
 Fischer G S, Iordachita I, Csoma C, et al. MRI-compatible pneumatic robot for transperineal prostate needle placement[J]. IEEE/ASME Transactions on Mechatronics, 2008, 13(3): 295-305.  Tokuda J, Fischer G S, DiMaio S P, et al. Integrated navigation and control software system for MRI-guided robotic prostate interventions[J]. Computerized Medical Imaging and Graphics, 2010, 34(1): 3-8.  Goldenberg A A, Trachtenberg J, Yi Y, et al. Robot-assisted MRI-guided prostatic interventions[J]. Robotica, 2010, 28(s1): 215-234. Lu W S, Liu D, Tian Z M, et al. The analysis of key technologies of intravascular intervention surgical robot[J]. Journal of Biomedical Engineering Research, 2009, 28(4): 303-306. Srimath-Veeravalli G, Kesavadas T, Li X Y. Design and fabrication of a robotic mechanism for remote steering and positioning of interventional devices[J]. International Journal of Medical Robotics and Computer Assisted Surgery, 2010, 6(2): 160-170. 张立勋,伊蕾,白大鹏.六连杆助行康复机器人鲁棒控制[J].机器人,2011,33(5):585-591. Zhang L X, Yi L, Bai D P. Robust control of six-linkage walking assistance rehabilitation robot[J]. Robot, 2011, 33(5): 585-591. Luo B, Zhang Y. SMT automatic optical inspection path planning based on ant colony algorithm[J]. Chinese Journal of Scientific Instrument, 2006, 27(s): 1251-1252,1278. Chen H Z, Pan X Z, Ping L D, et al. A spatially triggered dissipative resource distribution policy for SMT processors[J]. Journal of Zhejiang University: Science A, 2008, 9(8): 1070-1082.  Eastwood S, Webb P. Compensation of thermal deformation of a hybrid parallel kinematic machine[J]. Robotics and Computer Integrated Manufacturing, 2009, 25(1): 81-90.