In our earlier paper [2] we examined the problem of control of a balanced dynamically nonsymmetric sphere with rotors with no-slip condition at the point of contact. In this paper we investigate the controllability of a ball in the presence of friction. We also study the problem of the existence and stability of singular dissipation-free periodic solutions for a free ball in the presence of friction forces. The issues of constructive realization of the proposed algorithms are discussed.	
		
	
	
												
												Keywords:
												
												non-holonomic constraint, control, dry friction, viscous friction, stability, periodic solutions							
						
						
							
	
	Citation:
	
	Borisov A. V., Kilin A. A., Mamaev I. S., How to control the Chaplygin ball using rotors. II, Rus. J. Nonlin. Dyn.,	
	2013, 	Vol. 9, No. 1,
	 pp.  59-76
	
	
	
	
	
		
		DOI:10.20537/nd1301006