Abstract
In this paper, an aperiodically sampled-data control scheme is detailed for the two-wheel inverted pendulum using Takagi-Sugeno (T-S) fuzzy models. The passivity theory is applied in the presence of the disturbances in the actuator channel. A two-rule fuzzy model is utilized to represent the two-wheel inverted pendulum. By using the pendulum angle as the antecedent variable of the fuzzy rule, a passive sampled-data controller is established using the pendulum inclination angle and the mean value of the rim motors’ rotary angles. A Lyapunov-like function based on the two fuzzy rules is constructed to develop criteria of passivity, by the utilization of very-strict passivity in terms of the pendulum angle. Then a solution to the gains of sampled-data controller is synthesized to ensure the very-strict passivity of the pendulum system. By the illustrative examples, the effectiveness of the variable-sampling control scheme is validated for the two-wheel inverted pendulum.
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Abbreviations
- D :
-
Distance between the two wheels
- f L :
-
Force from the left rim motor
- f R :
-
Force from the right rim motor
- g :
-
Gravitational acceleration
- l :
-
Length between wheel axle and gravitational center of the pendulum
- M :
-
Mass of the pendulum
- m :
-
Mass of the cart
- r :
-
Radius of the wheel
- θ :
-
Mean value of the rim motors’ rotary angles
- θ L :
-
Rotary angle of the left rim motor
- θ R :
-
Rotary angle of the right rim motor
- ψ :
-
Cart Yaw steering angle
- ϕ :
-
Pendulum inclination angle
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Recommended by Associate Editor Ohmin Kwon under the direction of Editor Euntai Kim. This work was partially supported by the Harbin Applied Technology Research and Development Project (excellent academic leader) (No. 2014RFXYJ051), China.
Rongjun Liu received the M.E. degree in Agricultural Electrification and Automation from Northeast Agricultural University, Harbin, China, in 2009. He is pursuing the Ph.D. degree in Measuring and Testing Technologies and Instruments from Harbin University of Science and Technology, Harbin, China. His current research interests include sampleddata control, nonlinear control.
Junfeng Wu received the B.E. degree in Automatic Control from the Harbin University of Science and Technology, the M.E. degree in Automatic Control, and the Ph.D. degree in Material Processing Engineering from the Harbin Institute of Technology, Harbin, China, in 1982, 1987, and 2003, respectively. From 2004 to 2006, he was a Post-Doctoral Researcher with the College of Mechanical and Electrical Engineering, Harbin Engineering University, Harbin, China. He is currently a Professor with the College of Measure-Control Technology and Communication Engineering, Harbin University of Science and Technology, and is also the Secretary of the Party Committee of the Heilongjiang University of Science and Technology, Harbin, China. His current research interests include sampled-data control, nonlinear control.
Dan Wang received the B.E. degree in Electronic Information Engineering, and the M.E. degree in Agricultural Electrification and Automation, both from Northeast Agricultural University, Harbin, China, in 2010 and 2013, respectively. She is pursuing the Ph.D. degree in Precision Instrument Machinery from Harbin Engineering University, Harbin, China. Her current research interests include particle swarm optimization, robust control, sliding mode control.
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Liu, R., Wu, J. & Wang, D. Sampled-data Fuzzy Control of Two-wheel Inverted Pendulums Based on Passivity Theory. Int. J. Control Autom. Syst. 16, 2538–2548 (2018). https://doi.org/10.1007/s12555-018-0063-4
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DOI: https://doi.org/10.1007/s12555-018-0063-4