融合C语言特性的ST语言的扩展与编译OACSTPCD

In response to the issue that the standard ST language cannot fully adapt to application scenarios such as wind turbine control,the article proposes and implements an extended ST language and its compilation system that integrates the characteristics of C lan-guage.The extended ST language integrates general recursive function,function without return value,dynamic array,function block array and calling program into the standard ST language.While fully compatible with the standard ST language,it compensates for the short-comings of the standard ST language.The compiler system supports lexical analysis,parsing,semantic analysis and cross compilation of extended ST language,and generates executable files that can be recognized by the controller.The expanded ST language and its compila-tion system can fully adapt to wind power generation control and other application scenarios.After application in practical engineering,it has been shown that the extended ST language can fully support special applications in practical engineering and improve the writing and execution efficiency of control programs.