Barbosa, RamiroTenreiro Machado, J. A.2019-04-032019-04-032002-05-26http://hdl.handle.net/10400.22/13360This paper analyses the dynamical properties of systems with backlash and impact phenomena based on the describing function method. It is shown that this type of nonlinearity can be analyzed in the perspective of the fractional calculus theory. The fractional-order dynamics is illustrated using the Nyquist plot and the results are compared with those of standard models.engBacklashFractional calculusconference object