今天主要介绍其他常用的Simulink模块包括数学函数模块(Math Function )、随机数模块(Random Number)和传递函数模块(Transfer Fcn)。 1.数学函数模块 数学函数模块提供了一些常用的数学函数功能,如幂运算、对数运算及指数运算等。此模块默认有1个输入端口和1个输出端口,根据所选择的数学运算符号输入端口个数会有变化
If your S-function uses port-based sample times, it can set a sample time ofInfon any of its ports. A port-based sample time ofInfmeans that the signal entering or leaving the port stays constant. In a Level-2 MATLAB S-function, use this code to specify a sample time ofInffor a ...
Sample-Time Inheritance Rule Example As an example of an S-function that precludes a referenced model from inheriting its sample time, consider an S-function that has the followingmdlOutputsmethod: static void mdlOutputs(SimStruct *S, int_T tid) { const real_T *u = (const real_T*) ssG...
Math Function是一个数学函数模块,能够完成一些常见的数学函数计算。例如指数、自然对数、复数、幂等运算。 操作 Step1:打开Library Browser,在左侧菜单栏定位至Simulink-Math Operations一栏,将Math Function模块拖拽至模型中。 Step2:双击Math Function模块。 在Main-Function选项中,可以看到所有可供选择的函数。 函数 描...
Controllable Sample Time You can configure a block to use a controllable sample time with a resolution Tbase. Tbase is the smallest allowable time interval between block executions. To set Tbase in your own C S-Function block, use the ssSetControllableSampleTime function. When a block uses con...
在模型编辑窗口中双击S-Function模块,打开其参数对话框,在“S-function名称”框中填入S函数名timek,在“S-function参数”框中填入外部参数k,如图12-24所示。如果有多个外部参数,参数之间用逗号分隔。k可以在MATLAB工作区用命令定义。当输入k的值为5时,运行得到的仿真结果如图12-25所示。
}/*Function: mdlInitializeSampleTimes === * Abstract: * Variable-Step S-function*/staticvoidmdlInitializeSampleTimes(SimStruct *S) { ssSetSampleTime(S,0, VARIABLE_SAMPLE_TIME); ssSetOffsetTime(S,0,0.0); ssSetModelReferenceSampleTimeDefault...
number1 = A1*sin( w1 * time + d1) number2 = A2*sin( w2 * time + d2) 接收效果如下图所示: 3. S-Function源码 3.1. S-Function源码 - unPackData_Q.c 代码语言:javascript 代码运行次数:0 运行 AI代码解释 #defineS_FUNCTION_NAMEunPackData_Q ...
Simulink界面中双击该模块,进入编程界面 点击该界面中的Edit Data update method改为Discrete, sample time为设置的采样时间。 3.解算器定步长和模块采样时间之间的关系? 解算器定步长为执行的最小时间单位,各模块的采样时间必须为解算器定步长的整数倍。
% The general form of an M-File S-function syntax is: % [SYS,X0,STR,TS] = SFUNC(T,X,U,FLAG,P1,...,Pn) % % What is returned by SFUNC at a given point in time, T, depends on the % value of the FLAG, the current state vector, X, and the current ...