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研究了 I 型糖尿病患者血糖控制系统。在该系统中，针对 I 型糖尿病患者的生理特点，将热传导偏微分方程应用到血糖控制系统中，从定向控制的角度研究控制输入和控制目标输出的关系。运用Matlab 编写程序进行数值模拟，得出控制输出目标（人体正常血糖浓度）所对应的精确控制输入，更好地保证糖尿病患者的身体健康，以免出现低血糖的情况。“,”In this paper, the glycemic control system of type I diabetics was discussed .In this system, the heat equation was applied to the glycemic control system based on the physi -ological character of type I diabetics, and the relationship between the control input and con -trol objective was researched from the point of view of orientation control .Eventually, some numerical simulations were performed by Matlab program .From the results of numerical sim-ulations, we got the accurate control input corresponding to the control objective guaranteeing the health of diabetics lest the appearance of hypoglycemia .