【摘要】 本文简要分析了中小合成氨氢氮比控制对象的主要特性,提出在难以准确测得其数学模型的情况下,可采用一种分段控制、串级 PI 连续调节的近似控制方案,给出了试验数据和使用效果。更多还原

【Abstract】 For H/N control in mediun and small ammonia plants,the basic characteristics ofthe controlled objects have been analyzed.And for objects whose mathematical mo-dels are hard to determine,a cascade PL analog control scheme is proposed to takecare of each stage of the process.Some experimental data and results are given.(?)更多还原