A class of infinite horizon optimal control problems involving Lp-type
cost functionals with 0<p≤1 is discussed. The existence of optimal
controls is studied for both the convex case with p=1 and the nonconvex case
with 0<p<1, and the sparsity structure of the optimal controls promoted by
the Lp-type penalties is analyzed. A dynamic programming approach is
proposed to numerically approximate the corresponding sparse optimal
controllers