Proposal of Sliding Mode Controller based on Backstepping Technique for Control of Magnetic Levitation System

Magnetic Levitation System (MLS) is a nonlinear system and it used extensively in many areas. The system's goal to use the non-contact principle magnetize coil cause objects float specific height. magnetic force current flowing through have relationship. In this paper first design of backstepping controller done attain wanted floating presence related uncertainties behavior witnessed. Then Sliding Mode Controller (SMC) based on procedure formulated. control gains are designed such way that characteristics polynomial whose coefficients strictly Hurwitz closed loop asymptotic stability assured. Simulations performed ball tracking observed considering step signal as reference disturbances. More accuracy terms following by when Backstepping technique instead pulse type disturbance. By simulation analyzing results confirmed proposed strategy more effective.