Systems and methods for mounting and using various different accessories on a robotic system such as a unmanned ground vehicle. A nonlinear modulation unit is activated in presence of a variation of the quantity to be controlled higher than a preset intervention threshold and modifies in a nonlinear way the reference quantity supplied to the linear-control loop. The method includes determining an amount of correlation between the measurements of the selected local environmental condition that were received from two or more of the sensor nodes. An energy source is coupled to the volume of excited atoms confined by the plasma chamber. The constituent filaments of the nonwoven fabric has a polymer supercool index of 0. At least one of the parameters changes along the collision location detection region in such a way that the quotient andor the difference between the two signals of the sensors essentially continuously increases or decreases when the same object collides at the same speed in different collision locations.