Yy. Mao et Zy. Liu, The optimal feedback control of the linear-quadratic control problem with a control inequality constraint, OPTIM CONTR, 22(2), 2001, pp. 95-109
In this paper, we consider the linear-quadratic control problem with an ine
quality constraint on the control variable. We derive the feedback form of
the optimal control by the agency of the unconstrained linear-quadratic con
trol systems. Copyright (C) 2001 John Wiley & Sons, Ltd.