  The issue of white-noise-aided control is considered and its availability is
proved. And a noise-aiding way is developed to stabilize perturbed systems to
be input-to-state stable (ISS) with respect to (w.r.t.) perturbations. To
illustrate its effectiveness, the white-noise-aided control of a parameter
perturbed chaotic Chen system is given as an example. And numerically, it shows
that, comparing to the un-noise-aided case, noise-aided control can not only
shorten the control's transient process but also save its cost. These are also
demonstrated by various aiding noises such as common (symmetric) noise and
non-common (independent or asymmetric) noise, where common noise is found to be
the most efficient in enhancing the control.
