“…The reason for this is primarily threefold: i) Mechanical systems such as wheeled mobile robots, robot manipulators, space robots and underwater vehicles have non integrable constraints; ii) the formation of control law for systems which cannot be easily transformable into linear control problem in a meaningful way is quiet challenging and iii) these systems cannot be stabilized by static time invariant state feedback laws as pointed out by Brockett [6]. Different control strategies have been presented for the stabilization of nonholnomic systems to overcome the limitations of the Brockett result like: discontinuous time-invariant stabilization [4,10,12,14], smooth time-varying stabilization [13,15], adaptive techniques [9,19] and sliding mode control [1,5,17].…”