本文针对Koivo自校正算法在消除系统静差方面的不足,提出了改进的算法.数字仿真和现场调试结果表明,改进后的控制算法在Intel 8031单片微机上就能有效地实现多台炉温的多变量自适应控制.为克服计算机集中控制多台热处理炉可靠性低、不易扩展等缺点,本系统还采用二级分布式控制结构. In this paper, aiming at the deficiencies of Koivo self-correction algorithm in eliminating system static error, an improved algorithm is put forward.The results of digital simulation and on-site commissioning show that the improved control algorithm can effectively realize multiple furnace temperatures Multivariate adaptive control.To overcome the computer centralized control of multiple heat treatment furnace low reliability, not easy to expand and other shortcomings, the system also uses two distributed control structure.