Crosstalk calibration for torque sensor using actual sensing frame
Accurate load sensing is crucial to robots' performance of various tasks undertaken to assist workers. Most of the research on load sensing by robot manipulators has focused on improving force/torque sensor hardware. Torque sensors suffer from crosstalk, which cannot be compensated, not even through calibration. Thus, for minimization of crosstalk, torque sensors require precise machining and a complicated structure, which often increase costs. This paper proposes an alternative, novel calibration method. In this scheme, first, the compliance matrix of the torque sensor is obtained from sampling data, and then the location and scale of the actual sensing frame, in which crosstalk-free load sensing occurs, can be estimated. Using the proposed calibration method, the external load acting on the endeffector can be sensed accurately, even with relatively low-quality torque sensors. Experimental results show that measurement accuracy was significantly improved with the proposed method.
- M. Salehi, and G. Vossoughi, Impedance Control of Flexible Base Mobile Manipulator Using Singular Perturbation Method and Sliding Mode Control Law, Int, Journal of Control, Automation, and Systems, 6 (5) (2008) 677-688.
- A. Pervez, and J. Ryu, Safe Physical Human Robot Interaction- Past, Present and Future, Journal of Mechanical Science and Technology, 22 (3) (2008) 469-483.
- T. C. Phung, S. H. Ha, Y. S. Ihn, B. J. Choi, S. M. Lee,J, C.Koo, and H. R. Choi, An Enhanced Force and Contact Position Sensor for Micro-Manipulators, Int, Journal of Control. Automation, and Systems, 7 (3) (2009) 459-467.
- G. S. Kim, The design of a six-component force/moment sensor and evaluation of its uncertainty, Measurement Science and Technology, 12 (2001) 1445-1455.
- B. E. Shimano, The Kinematic design and force control of computer controlled manipulators, Artificial Intelligence Lab., Stanford Univ., Al Memo, 313 (1978).
- A. Bicchi, A Criterion for Optimal Design of Multi-axis Force Sensors, Journal of Robotics and Autonomous Systems, 10 (4) (1992) 269-286.
- M. Richard, J. Voyles, and D. Morrow, Shape from motion approach to rapid and precise force/torque sensor calibration, Proc, of Int, Mechanical Engineering Congress and Exposition, 119 (2) (1997) 229-235.
- M. Donghai, and M. John, Gravity-based Autonomous Calibration for Robot Manipulators, Proc, of Int. Conf. on Robotics and Automation, San Diego, CA, USA (1994) 2763-2768.
- B. Kim, and S. Yun, Development of a Joint Torque Sensor Fully Integrated with an Actuator, Proc, of Int, Conf. on Control, Automation and Systems, (2005) 1679-1683.
- H. D. Taghirad, A. Helmy and P. R. Belanger, Intelligent Built-in Torque Sensor for Harmonic Drive Systems, Proc,of IEEE Instrumentation and Measurement, 48 (6) (1999) 969-974,
- J. Y. Kim and I. W. Park, System Design and Dynamic Walking of Humanoid Robot KHR-2, Proc. of IEEE Int. Conf. on Robotics and Automation, Barcelona, Spain (2005) 1443-1448.
- D. Vischer and O. Khtib, Design and Development of High-Performance Torque-Controlled Joints, IEEE Transactions on Robotics and Automation, 11 (4) (1995) 537-544.
- S. H. Lee, Y. L. Kim and J. B. Song, Torque Sensor Calibration Using Virtual Load for a Manipulator, lnt. Journal of Precision Engineering and Manufacturing, 11 (2) (2010) 219-225.
- R. P. Paul, Robot Manipulators: Mathematics, Programming, and Control, Cambridge, MA: MIT Press, (1981) 85-108.
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