Title: Controller design for two-wheeled self-balancing vehicles using feedback linearisation technique
Authors: Ali Maddahi; Amir H. Shamekhi
Addresses: Faculty of Mechanical Engineering, K.N. Toosi University of Technology, #19, Pardis St., Molla Sadra Ave., Vanak Sq., P.O. Box 19395-1999, Tehran, Iran ' Faculty of Mechanical Engineering, K.N. Toosi University of Technology, #19, Pardis St., Molla Sadra Ave., Vanak Sq., P.O. Box 19395-1999, Tehran, Iran
Abstract: Two-wheeled self-balancing vehicles have been extensively used because of their unique capabilities such as reducing the traffic problems and being environment friendly. The main challenge in these vehicles is to design robust controllers capable of creating smooth and safe movement. This paper focuses on design of such a controller using the feedback linearisation technique. The modelled system comprises of a single-link inverted pendulum, which simulates the rider's body, mounted atop a two-wheeled platform. While the base is being externally disturbed, the designed controllers guarantee the stability of the system and keep the rider along its equilibrium situation. In order to validate the effectiveness of proposed control schemes, some sets of simulation studies are carried out on different smooth and non-smooth surfaces. It is finally shown that besides having stability on smooth surfaces, the system behaves stably on non-smooth trajectories.
Keywords: two-wheeled vehicles; self-balancing vehicles; dynamic equations; feedback linearisation; non-smooth trajectory; controller design; robust control; smooth movement; safe movement; inverted pendulum; simulation; equilibrium.
International Journal of Vehicle Systems Modelling and Testing, 2013 Vol.8 No.1, pp.38 - 54
Received: 29 Feb 2012
Accepted: 07 May 2012
Published online: 25 Feb 2013 *