SIAM Journal on Control and Optimization, Vol.55, No.6, 3726-3749, 2017
QUADRATIC APPROXIMATION AND TIME-VARYING FEEDBACK LAWS
We present a method to construct stabilizing time-varying feedback laws for a large class of systems. We apply our technique to several classical examples which do not satisfy the necessary Brockett condition or the Coron condition for stabilization by means of continuous stationary feedback laws.