buckboost.zip_DC-DC_DC-DC仿真_DC/DC仿真模型_双向DC-DC仿真_双向DC-DC模型

#define S_FUNCTION_NAME buckboost #define S_FUNCTION_LEVEL 2 // 第一行注释注明了level 2，Level 1 M文件S函数----这种方式提供了一个简单的M文件接口，可以与少部分的S函数API交互。Matlab对于这种方式的支持更多的是为了保持与以前版本的兼容，现在推荐采用的是Level 2 M文件S函数 #define Step_time 0.000002 //一次采样时间（采样频率） #include "simstruc.h" //包含头文件 double cnt=0; double i_err=0; double i_err_sum=0; double duty=0; double kp=10; double ki=150; double i=0; /*====================* * S-function methods * *====================*/ /* Function: mdlInitializeSizes =============================================== * Abstract: * The sizes information is used by Simulink to determine the S-function * block's characteristics (number of inputs, outputs, states, etc.). */ static void mdlInitializeSizes(SimStruct *S) { ssSetNumSFcnParams(S, 0); /* Number of expected parameters */ if (ssGetNumSFcnParams(S) != ssGetSFcnParamsCount(S)) { /* Return if number of expected != number of actual parameters */ return; }//实际参数与设定参数不符合则返回 if (!ssSetNumInputPorts(S, 1)) return;//若输入参数个数不为1，则返回 ssSetInputPortWidth(S, 0, 2);//输入参数维数，若有x个输入变量，此处将1改为x,0表示第一个输入 /* * Set direct feedthrough flag (1=yes, 0=no). * A port has direct feedthrough if the input is used in either * the mdlOutputs or mdlGetTimeOfNextVarHit functions. */ ssSetInputPortDirectFeedThrough(S, 0, 1);//输入直通个数 if (!ssSetNumOutputPorts(S, 1)) return; ssSetOutputPortWidth(S, 0, 1);//输出维度为1 ssSetNumSampleTimes(S, 1);//设置采样时间个数 ssSetNumRWork(S, 0); ssSetNumIWork(S, 0); ssSetNumPWork(S, 0); ssSetNumModes(S, 0); ssSetNumNonsampledZCs(S, 0); /* Specify the sim state compliance to be same as a built-in block */ ssSetOptions(S, SS_OPTION_EXCEPTION_FREE_CODE);//? } /* Function: mdlInitializeSampleTimes ========================================= * Abstract: * This function is used to specify the sample time(s) for your * S-function. You must register the same number of sample times as * specified in ssSetNumSampleTimes. */ static void mdlInitializeSampleTimes(SimStruct *S) { ssSetSampleTime(S, 0, Step_time); ssSetOffsetTime(S, 0, 0.0); } #define MDL_INITIALIZE_CONDITIONS /* Change to #undef to remove function */ #if defined(MDL_INITIALIZE_CONDITIONS) /* Function: mdlInitializeConditions ======================================== * Abstract: * In this function, you should initialize the continuous and discrete * states for your S-function block. The initial states are placed * in the state vector, ssGetContStates(S) or ssGetRealDiscStates(S). * You can also perform any other initialization activities that your * S-function may require. Note, this routine will be called at the * start of simulation and if it is present in an enabled subsystem * configured to reset states, it will be call when the enabled subsystem * restarts execution to reset the states. */ static void mdlInitializeConditions(SimStruct *S) { } #endif /* MDL_INITIALIZE_CONDITIONS */ //没有状态变量，所以不设置 #define MDL_START /* Change to #undef to remove function */ #if defined(MDL_START) /* Function: mdlStart ======================================================= * Abstract: * This function is called once at start of model execution. If you * have states that should be initialized once, this is the place * to do it. */ static void mdlStart(SimStruct *S) { } #endif /* MDL_START *///同上 /* Function: mdlOutputs ======================================================= * Abstract: * In this function, you compute the outputs of your S-function * block. */ static void mdlOutputs(SimStruct *S, int_T tid) { InputRealPtrsType uptrs =ssGetInputPortRealSignalPtrs(S,0);//实现对输入信号的访问。这个宏返回一个指针向量，必须通过*uPtrs[i]来访问 real_T *y = ssGetOutputPortRealSignal(S,0); cnt++; if(cnt<=75000) { i=*uptrs[0]; i_err=1-i; i_err_sum+=i_err; if(i_err_sum>=16000) i_err_sum=16000; if(i_err_sum<=-16000) i_err_sum=-16000; duty=0.01*i_err+0.00005*i_err_sum; if(duty>=0.8) duty=0.8; if(duty<=0) duty=0; y[0]=1-duty; } else { if(cnt==150000) cnt=0; i=*uptrs[1]; i_err=1-i; i_err_sum+=i_err; if(i_err_sum>=8000) i_err_sum=8000; if(i_err_sum<=-8000) i_err_sum=-8000; duty=1*i_err+0.0001*i_err_sum; if(duty>=0.8) duty=0.8; if(duty<=0) duty=0; y[0]=duty; } } #define MDL_UPDATE /* Change to #undef to remove function */ #if defined(MDL_UPDATE) /* Function: mdlUpdate ====================================================== * Abstract: * This function is called once for every major integration time step. * Discrete states are typically updated here, but this function is useful * for performing any tasks that should only take place once per * integration step. */ static void mdlUpdate(SimStruct *S, int_T tid) { } #endif /* MDL_UPDATE */ #define MDL_DERIVATIVES /* Change to #undef to remove function */ #if defined(MDL_DERIVATIVES) /* Function: mdlDerivatives ================================================= * Abstract: * In this function, you compute the S-function block's derivatives. * The derivatives are placed in the derivative vector, ssGetdX(S). */ static void mdlDerivatives(SimStruct *S) { } #endif /* MDL_DERIVATIVES */ /* Function: mdlTerminate ===================================================== * Abstract: * In this function, you should perform any actions that are necessary * at the termination of a simulation. For example, if memory was * allocated in mdlStart, this is the place to free it. */ static void mdlTerminate(SimStruct *S) { cnt=0; } /*=============================* * Required S-function trailer * *=============================*/ #ifdef MATLAB_MEX_FILE /* Is this file being compiled as a MEX-file? */ #include "simulink.c" /* MEX-file interface mechanism */ #else #include "cg_sfun.h" /* Code generation registration function */ #endif