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Output feedback sliding mode control for robot manipulators

  • Shafiqul Islam (a1) and Peter X. Liu (a1)

Summary

In this work, we propose an output feedback sliding mode control (SMC) method for trajectory tracking of robotic manipulators. The design process has two steps. First, we design a stable SMC controller by assuming that all state variables are available. Then, an output feedback version of this SMC design is presented, which incorporates a model-free linear observer to estimate unknown velocity signals. We then show that the tracking performance under the output feedback design can asymptotically converge to the performance achieved under state-feedback-based SMC design. A detailed stability analysis is given, which shows semi-global uniform ultimate boundedness property of all the closed-loop signals. The proposed method is implemented and evaluated on a robotic system to illustrate the effectiveness of the theoretical development.

Copyright

Corresponding author

*Corresponding author. E-mail: sislam@sce.carleton.ca

References

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Keywords

Output feedback sliding mode control for robot manipulators

  • Shafiqul Islam (a1) and Peter X. Liu (a1)

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