Question

我正在研究可调参数，并且手动s函数非常简单。但是当我们想要使变量可调（从s函数参数块中获取它们作为参数）并使用遗留代码工具自动生成s函数时该怎么办。它甚至可能吗？

例如，我编写了一个简单的单轨模型。这是single_track.h文件

#ifndef _SINGLE_TRACK_FUNC_
#define _SINGLE_TRACK_FUNC_

typedef struct retvale
{
double a_y;
double psi_dot;
double beta;
} retvale;

extern struct retvale singletrack(double a,double b,double m,double cv,double ch,double lv,double lh,double theta,double I_s, double dt);
extern void initialization();
#endif

这是single_track.c文件

#include "single_track_func.h"

float a_1_1,a_1_2,a_2_1,a_2_2,b_1_1,b_2_1,psi_dot_prev,beta_prev;
int count;

retvale singletrack(double a,double b,double m,double cv,double ch,double lv,double lh,double theta,double I_s, double dt)
{
    retvale my_obj;



    static float beta_dot=0; 
    static float psi_double_dot=0; 
    static float beta_previous=0; 
    static float psi_dot_previous=0;


    beta_previous       = beta_prev;
    psi_dot_previous    = psi_dot_prev;
    a_1_1               = ((-cv-ch)/((m)*(a)));
    a_1_2               = ((m*(a)*(a))-((ch*lh)-(cv*lv)))/(m*(a)*(a));    
    a_2_1               = (-(ch*lh)+(cv*lv))/theta;
    a_2_2               = ((-ch*lh*lh)-(cv*lv*lv))/(theta*(a));
    b_1_1               = -cv/(m*(a));
    b_2_1               = (cv*lv)/(theta);

    beta_dot            = a_1_1 * beta_previous + a_1_2 * psi_dot_previous - b_1_1*((b)/I_s);
    psi_double_dot      = a_2_1 * beta_previous + a_2_2 * psi_dot_previous + b_2_1*((b)/I_s);                             
    my_obj.beta             = beta_dot          * dt + beta_previous;
    my_obj.psi_dot          = psi_double_dot    * dt + psi_dot_previous;
    my_obj.a_y              = (a*((my_obj.psi_dot)-(beta_dot)));
    beta_prev=my_obj.beta;
    psi_dot_prev=my_obj.psi_dot; 
    return my_obj;

}
void initialization()
{
    psi_dot_prev=0;
    beta_prev=0;
}

从double m到double dt的参数是我期望作为s-function块的参数的输入，而'double a'和'double b'值我将从输入获得，所以我不必担心关于他们。

手动我在mdlInitializeSize中的s-function中引入了一些全局变量 ssSetNumSFcnParams（S，8）;

m_s=mxGetPr(ssGetSFcnParam(S,0));
cv_s=(real_T*) mxGetPr(ssGetSFcnParam(S,1));
ch_s=(real_T*) mxGetPr(ssGetSFcnParam(S,2));
lv_s=(real_T*)mxGetPr(ssGetSFcnParam(S,3));
lh_s=(real_T*)mxGetPr(ssGetSFcnParam(S,4));
theta_s=(real_T*)mxGetPr(ssGetSFcnParam(S,5));
I_s_s=(real_T*)mxGetPr(ssGetSFcnParam(S,6));
dt_s=(real_T*)mxGetPr(ssGetSFcnParam(S,7));
 ssSetSFcnParamTunable(S,0,SS_PRM_SIM_ONLY_TUNABLE);
 ssSetSFcnParamTunable(S,1,SS_PRM_SIM_ONLY_TUNABLE);
 ssSetSFcnParamTunable(S,2,SS_PRM_SIM_ONLY_TUNABLE);
 ssSetSFcnParamTunable(S,3,SS_PRM_SIM_ONLY_TUNABLE);
 ssSetSFcnParamTunable(S,4,SS_PRM_SIM_ONLY_TUNABLE);
 ssSetSFcnParamTunable(S,5,SS_PRM_SIM_ONLY_TUNABLE);
 ssSetSFcnParamTunable(S,6,SS_PRM_SIM_ONLY_TUNABLE);
 ssSetSFcnParamTunable(S,7,SS_PRM_SIM_ONLY_TUNABLE);

这可以手动工作，但如何将它放在遗留代码中以便它自动运行

我之前在使用预定义值的地方编写了遗留代码，并且工作正常：

run('CreateBusObject_retvale');


def = legacy_code('initialize');


def.SourceFiles = {'single_track_func.c'};
def.HeaderFiles = {'single_track_func.h'};
def.SFunctionName = 'single_track_1';
def.StartFcnSpec ='void initialization()';
def.OutputFcnSpec ='retvale y1=singletrack(double u1,double u2, double u3,)';
def.SampleTime = [-1,0];


legacy_code('sfcn_cmex_generate', def);



legacy_code('compile', def);

legacy_code('sfcn_tlc_generate', def);

和CreateBusObject_retvale.m是

a_y=Simulink.BusElement;
a_y.Name='a_y';
a_y.DataType='double';

psi_dot=Simulink.BusElement;
psi_dot.Name='psi_dot';
psi_dot.DataType='double';

beta=Simulink.BusElement;
beta.Name='beta';
beta.DataType='double';


retvale               = Simulink.Bus;
retvale.HeaderFile    = 'single_track_func.h';
retvale.Elements      = [a_y,psi_dot,beta];


outputBus           = Simulink.BusElement;
outputBus.Name      = 'outputBus';
outputBus.DataType  = 'Bus: retvale';

如何从遗留代码工具中的s-function块获取参数

0 个答案: