大滞后特性温度系统的控制：研究大惯性、大滞后温度控制系统的控制及其参数整定；分析PLC的控制回路及控制程序；分析交流变频调速器的特性及其应用；并对整个系统的改造进行分析、评价。

-Large time delay characteristics of the temperature control system: To study the inertia, large time delay control of the temperature control system and its parameter tuning　analysis of PLC control loop and control procedures　analysis VVVF exchange of properties and applications　and the whole system transformation for analysis, evaluation.