In this paper the common air flow control system is analyzed and two new control schemes - air flow control system with CO trim and boiler efficiency peak holding optimization control system are discussed. 本文对现有送风自动调节系统进行了分析,并提出了两种新型的送风自动调节方式:采用烟气申CO含量作为校正信号的送风自动调节和锅炉效率的自寻最优控制。