A Controller Combining Positive Velocity Feedback with Negative Angle Feedback for a Two-Wheeled Robot

Hu, Lingyan; Ieee, Henry Leung; Xu, Shaoping; Zhang, Hua

doi:10.1515/cait-2015-0035

Abstract

The two-wheeled robot is a nonlinear system of multi-variables, higherorder and strong coupling. This paper presented a PID Controller with Double Loops (PCDL) to control the tilt angle and velocity of a two-wheeled robot. The angle controller is the regular negative feedback, while the velocity control is the positive feedback. The Double Loops work cooperatively to endow the system with strong anti-interference ability. The stability of the whole system is analyzed and the criterion of the system stability is developed. The simulation and experiments showed that the two-wheeled robot can self-balance and move at an expected velocity and the system has strong anti-interference ability.

References

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A Controller Combining Positive Velocity Feedback with Negative Angle Feedback for a Two-Wheeled Robot

Abstract

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