Pulsive feedback control for stabilizing unstable periodic orbits in a   nonlinear oscillator with a non-symmetric potential
  We examine a strange chaotic attractor and its unstable periodic orbits in case of one degree of freedom nonlinear oscillator with non symmetric potential. We propose an efficient method of chaos control stabilizing these orbits by a pulsive feedback technique. Discrete set of pulses enable us to transfer the system from one periodic state to another. 
G. Litak, M. Ali, L.M. Saha