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就合成氨厂的氢氮比微机自控系统的设计，提出一种基于模糊和预测控制理论的新型算法，工厂运行表明，该算法有效地克服了控制对象的大滞后，数学模型时变及难以精确化等难题。
A new algorithm based on fuzzy and predictive control theory is proposed for the design of hydrogen-nitrogen ratio microprocessor-based control system in an ammonia plant. The operation of the plant shows that the algorithm effectively overcomes the large lag of the controlled object, the time-varying mathematical model and the difficulty of accurate And other problems.