Steady-state behaviour of discretized terminal sliding mode

• Abhisek K. Behera ^[1] ; Bijnan Bandyopadhyay ^[1]
  1. [1] Indian Institute of Technology Bombay

     Indian Institute of Technology Bombay

     India

     
• Localización: Automatica: A journal of IFAC the International Federation of Automatic Control, ISSN 0005-1098, Vol. 54, 2015, págs. 176-181
• Idioma: inglés
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• Resumen

  • In this paper, the steady-state behaviour of discretized terminal sliding mode control is studied. A discrete terminal sliding mode control is designed by discretizing the continuous-time system and then the steady-state behaviour is analysed in terms of periodic orbits. We have shown that by this discrete terminal sliding mode control the discretized second order system exhibits only period-22 motion in steady-state. To ensure this, existence and stability conditions of all possible periodic orbits are found out analytically and shown that only period-22 conditions are satisfied by the state evolution of the discretized system in steady-state. Next, a higher order single-input-single-output system is considered and we also establish that only period-22 motion exists in steady-state.