Thermal Analyzer temperature control system has characteristics of non-linearity, time-variance and time-lag. However, for such system, conventional PID controller can not meet a wide range of precision temperature control requirements. 热分析仪温度控制系统具有非线性、时变性和时间滞后性的特性,对于被控对象具有这些特性的温度控制系统,采用常规PID控制方法很难满足大范围温度控制精度的要求。