恒潤科技 一本很實用很詳細的S-FUNCTION函數編寫的工具書！ S-FUNCTION 概述................................................................................................................................... 1 什么是S-FUNCTION............................................................................................................................... 2 在模型中使用S-FUNCTION.................................................................................................................... 3 向S-Function 傳遞參數..................................................................................................................... 3 何時使用S-Function......................................................................................................................... 4 S-FUNCTION 的工作原理........................................................................................................................ 5 Simulink 塊的數學關系...................................................................................................................... 5 仿真過程............................................................................................................................................. 5 S-Function 回調程序.......................................................................................................................... 6 S-FUNCTION 的實現................................................................................................................................ 8 M-文件的S-Function........................................................................................................................ 8 MEX 文件的S-function ..................................................................................................................... 8 MEX 文件與M-文件的S-function 比較........................................................................................... 9 S-FUNCTION 的概念.............................................................................................................................. 10 直接饋通........................................................................................................................................... 10 動態維矩陣....................................................................................................................................... 10 設置采樣時間和偏移量.....................................................................................................................11 S-FUNCTION 范例................................................................................................................................. 14 M 文件S-function 范例.................................................................................................................... 15 C S-Function 范例............................................................................................................................ 16 Fortran S-Function 范例.................................................................................................................. 18 C++ S-Function 范例....................................................................................................................... 18 Ada S-Function 范例....................................................................................................................... 18 編寫M S-FUNCTION............................................................................................................................. 19 概述....................................................................................................................................................... 20 S-Function 參數................................................................................................................................ 20 S-Function 的輸出............................................................................................................................ 20 定義S-FUNCTION 塊特性..................................................................................................................... 22 處理S-FUNCTION 參數......................................................................................................................... 22 M 文件的S-FUNCTION 范例................................................................................................................. 23 范例1——簡單的M 文件S-Function ........................................................................................... 23 范例2——連續狀態S-Function .................................................................................................... 25 范例3——離散狀態S-Function .................................................................................................... 27 范例4——混合系統S-Function .................................................................................................... 28 范例5——變步長S-Function ........................................................................................................ 31 ii 使用C 語言編寫S-FUNCTION ............................................................................................................. 33 概述....................................................................................................................................................... 34 創建C MEX S-Function.................................................................................................................. 35 自動生成S-FUNCTION......................................................................................................................... 36 配置生成的S-Function.................................................................................................................... 37 S-Function Builder 如何生成S-Function...................................................................................... 37 設置include 路徑............................................................................................................................. 37 S-FUNCTION BUILDER 的對話窗........................................................................................................... 39 Initialization 選卡.............................................................................................................................. 39 Data Properties 選卡....................................................................................................................... 40 Libraries 選卡................................................................................................................................... 42 Outputs 選卡.................................................................................................................................... 43 Continuous Derivatives 選卡.......................................................................................................... 45 Discrete Update 選卡...................................................................................................................... 46 Build Info 選卡................................................................................................................................. 47 一個基本的C MEX S-FUNCTION 范例............................................................................................... 48 定義與包含....................................................................................................................................... 49 回調函數的實現................................................................................................................................ 50 Simulink/Real-Time Workshop 接口............................................................................................. 51 Building Timestwo 范例................................................................................................................... 51 C S-FUNCTION 模板.............................................................................................................................. 52 S-Function 源文件必需的內容........................................................................................................ 52 SimStruct.......................................................................................................................................... 53 編譯C S-Function........................................................................................................................... 53 SIMULINK 如何與C S-FUNCTION 相互作用........................................................................................ 54 進程層面........................................................................................................................................... 54 數據層面........................................................................................................................................... 56 編寫回調函數....................................................................................................................................... 59 將LEVEL 1 C MEX S-FUNCTION 轉換到LEVEL 2 .............................................................................. 60 創建C++ S-FUNCTION......................................................................................................................... 63 創建ADA S-FUNCTION........................................................................................................................ 64 創建FORTRAN S-FUNCTION.............................................................................................................. 65 實現塊特性............................................................................................................................................... 67 對話框參數........................................................................................................................................... 68 iii 可調參數........................................................................................................................................... 68 運行參數............................................................................................................................................... 70 創建運行參數................................................................................................................................... 70 更新運行參數................................................................................................................................... 71 創建輸入和輸出端口............................................................................................................................ 72 創建輸入端口................................................................................................................................... 72 創建輸出端口................................................................................................................................... 73 輸入的標量擴展................................................................................................................................ 74 掩碼多端口S-Function.................................................................................................................... 75 自定義數據類型................................................................................................................................... 76 采樣時間............................................................................................................................................... 77 基于塊的采樣時間............................................................................................................................ 77 指定基于端口的采樣時間................................................................................................................ 79 基于塊與基于端口的混合采樣時間................................................................................................ 81 多速率S-Function 塊....................................................................................................................... 82 多速率S-Function 塊的同步........................................................................................................... 83 工作向量............................................................................................................................................... 84 工作向量與過零檢測........................................................................................................................ 85 包括指針工作向量的范例................................................................................................................ 85 內存分配........................................................................................................................................... 86 FUNCTION-CALL 子系統........................................................................................................................ 87 錯誤處理............................................................................................................................................... 89 防超程代碼....................................................................................................................................... 89 SsSetErrorStatus 的終止條件........................................................................................................ 90 數組邊界檢查................................................................................................................................... 90 S-FUNCTION 范例................................................................................................................................. 91 連續狀態的S-Function 范例........................................................................................................... 92 離散狀態的S-Function 范例........................................................................................................... 93 混合系統的S-Function 范例........................................................................................................... 93 變步長的S-Function 范例............................................................................................................... 94 過零檢測的S-Function 范例........................................................................................................... 94 時變連續傳遞函數的S-Function 范例........................................................................................... 94