In this paper, for a class of discrete time system, opportunity-awaiting control with constraint of interval target area is discussed which is under balanced norm distribution stochastic serials at the cost of valid work time of control system. 本文研究了在正态平稳随机序列作用下,以牺牲控制系统工作时间为代价的离散线性定常系统的待机控制问题。