The optimal control system of economical combustion is simulated by computer . and the theory of economical combustion and the reasons causing low heat efficiency are discussed in the paper . the sub - optimal feedback control system is proposed in which oxygen setting is controlled by a fuzzy controller 对燃烧系统最优控制进行计算机仿真研究，分析了经济燃烧的原理及造成锅炉燃烧热效率低的原因，构成了模糊控制含氧量给定值的闭环次寻优控制系统。
