YU Lian-dong,CHANG Ya-qi,ZHAO Hui-ning,et al.Method for improving positioning accuracy of robot based on support vector regression[J].Optics and Precision Engineering,2020,28(12):2646-2654.
YU Lian-dong,CHANG Ya-qi,ZHAO Hui-ning,et al.Method for improving positioning accuracy of robot based on support vector regression[J].Optics and Precision Engineering,2020,28(12):2646-2654. DOI: 10.37188/OPE.20202812.2646.
Method for improving positioning accuracy of robot based on support vector regression
To further improve the absolute positioning accuracy of a robot, a method for realizing the error prediction based on support vector regression (SVR) was proposed. First, an MDH model was used to establish a kinematic robot model, and SVR was used to establish the prediction model of the rotation angle and position error of a robot. Second, the grid division was controlled based on the spatial accuracy, and the relationship between the sampling points and the calibration accuracy was analyzed to establish an appropriate mode for the area division. Finally, the differences between the values of the theoretical and real position coordinates of the robot measured with a laser tracker were used to train the SVR model and compensate the single-point position errors. The experimental results indicate that the arithmetic mean error of the robot at the center, and the edge positions, are reduced from 2.107 mm and 2.182 mm to 0.103 mm and 0.123 mm, respectively. The correctness and effectiveness of the SVR for the absolute positioning error compensation of a robot are also verified.
关键词
Keywords
references
HUANG X C , ZHANG M L , ZHANG X J , et al . . Improved DH method to build robot coordinate system [J]. Transactions of the Chinese Society for Agricultural Machinery , 2014 , 45 ( 10 ): 313 - 318,325 .
SAMAD A . HAYATI. Robot arm geometric link parameter estimation [C]. The 22nd IEEE Conference on Decision and Control. IEEE , 2007 : 1477 - 1483 .
YANG J Q , WANG D Y , DONG D F , et al . . Laser measurement based evaluation for orthogonal transformation calibration of robot pose [J]. Optics and Precision Engineering , 2018 , 26 ( 8 ): 1985 - 1993 . (in Chinese)
GHARAATY S , SHU T T , JOUBAIR A , et al . . Online pose correction of an industrial robot using an optical coordinate measure machine system [J]. International Journal of Advanced Robotic Systems , 2018 , 15 ( 4 ): 172988141878791 .
GUO SH J , JIANG G D , MEI X S , et al . . Measurement and identification of geometric errors for turntable-tilting head type five-axis machine tools [J]. Optics and Precision Engineering , 2018 , 26 ( 11 ): 2685 - 2694 . (in Chinese)
YANG L H , QIN X X , CAI J D , et al . . Research on industrial robot’s position accuracy calibration [J]. Control Engineering of China , 2013 ( 4 ): 200 - 203 . (in Chinese)
GROTJAHN M , DAEMI M , HEIMANN B . Friction and rigid body identification of robot dynamics [J]. International Journal of Solids and Structures , 2001 , 38 ( 10-13 ): 1889 - 1902 .
MARTINELLI A , TOMATIS N , SIEGWART R , et al . . Simultaneous localization and odometry selfcalibration for mobile robot [J]. Autonomous Robots , 2006 , 22 ( 1 ): 75 - 85 .
LUBRANO E , CLAVEL R . Thermal calibration of a 3 DOF ultra high-precision robot operating in Industrial environment [C]. Robotics and Automation (ICRA) , 2010 IEEE International Conference on. IEEE , 2010 : 3692 - 3697 .
GONG C H , YUAN J X , NI J . Nongeometric error identification and compensation for robotic system by inverse calibration [J]. International Journal of Machine Tools and Manufacture , 2000 , 40 ( 14 ): 2119 - 2137 .
NGUYEN H N , ZHOU J , KANG H J . A calibration method for enhancing robot accuracy through integration of an extended Kalman filter algorithm and an artificial neural network [J]. Neurocomputing , 2015 , 151 : 996 - 1005 .
ZENG Y F , TIAN W , LIAO W H . Positional error similarity analysis for error compensation of industrial robots [J]. Robotics and Computer-Integrated Manufacturing , 2016 , 42 : 113 - 120 .
GAO G B , LIU F , SAN H J , et al . . Hybrid optimal kinematic parameter identification for an industrial robot based on BPNN-PSO [J]. Complexity , 2018 , 2018 : 1 - 11 .
ZHAO J W , DAI J . Research on industrial robot error compensation method based on database inquirement [J]. Machine Tool & Hydraulics , 2008 , 36 ( 11 ): 15 - 17 . (in Chinese)
RYU D , CHOI O , BAIK J . Value-cognitive boosting with a support vector machine for cross-project defect prediction [J]. Empirical Software Engineering , 2016 , 21 ( 1 ): 43 - 71 .
CHEN Y B , XU P , CHU Y Y , et al . . Short-term electrical load forecasting using the Support Vector Regression (SVR) model to calculate the demand response baseline for office buildings [J]. Applied Energy , 2017 , 195 : 659 - 670 .
WANG Y , SONG ZH W , WANG Y Z , et al . . Robot calibration method based on spatial mesh and PSO optimal neural network [J]. China Measurement & Test , 2016 , 42 ( 8 ): 98 - 102 . (in Chinese)
ZHOU W , LIAO W H , TIAN W , et al . . Robot accuracy compensation method of spatial grid for aircraft automatic assembly [J]. China Mechanical Engineering , 2012 , 23 ( 19 ): 2306 - 2311 . (in Chinese)
LIU ZH J , WANG H , CHEN X , et al . . Study on the method of coordinate transformation between robot and laser tracker [J]. China Measurement & Test , 2017 , 43 ( 11 ): 102 - 107 . (in Chinese)
HONG P , TIAN W , MEI D Q , et al . . Robotic variable parameter accuracy compensation using space grid [J]. Robot , 2015 , 37 ( 3 ): 327 - 335 . (in Chinese)
FAN G F , PENG L L , ZHAO X J , et al . . Applications of hybrid EMD with PSO and GA for an SVR-based load forecasting model [J]. Energies , 2017 , 10 ( 11 ): 1713 .
MA L , YU Y J , CHENG W M , et al . . Positioning error compensation for a parallel robot based on BP neural networks [J]. Optics and Precision Engineering , 2008 , 16 ( 5 ): 878 - 883 . (in Chinese)
FRADINATA E , KESUMA Z M , RUSDIANA S , et al . . Forecast analysis of instant noodle demand using support vector regression (SVR) [J]. IOP Conference Series: Materials Science and Engineering , 2019 , 506 : 012021 .