universal_components/cm_heatsink_emulator
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Seems to calculate correctly now, but i need to plot to verify operation!

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This commit is contained in:
Christian Lind Vie Madsen
2025-10-14 14:03:54 +02:00
parent ab53feccc5
commit f8451ba27c
2 changed files with 63 additions and 20 deletions
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65
cm_heatsink_emulator.c
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@@ -9,41 +9,76 @@
#define EULER_NUM 2.7182818284590452353602
static float deltaTempElement(cm_heatsink_thermalElement_t *element, float temperature, float power){
static int isStructOk(cm_heatsinkEmul_t *inst){
if(inst == NULL)return 0;
if(inst->thermalElements == NULL)return 0;
if(inst->thermalElements_Counts == 0)return 0;
return temperature + (power * element->R_th);
return 1;
}
float cm_heatsinkEmul_getRespon(cm_heatsinkEmul_t *inst, float dtime){
static float deltaTempElement(cm_heatsink_thermalElement_t *element, float temperature, float power){
// Kelvin = Watt * K/W
return (power * element->R_th);
}
int cm_heatsinkEmul_iterate(cm_heatsinkEmul_t *inst, float dtime){
if(!isStructOk(inst)) return 1;
float dtemp = inst->ambientTemp;
for(int i = inst->thermalElements_Counts; i > 0; i--){
// We begin from ambient temperature and move up towards heat source.
for(int i = (inst->thermalElements_Counts-1); i >= 0; i--){
dtemp+= deltaTempElement(&inst->thermalElements[i], dtemp, inst->power);
// Calculate temperature until we reach requested element!
dtemp += deltaTempElement(&inst->thermalElements[i], dtemp, inst->power);
// Do so the temperature has the responsetime as the heatsink.
inst->thermalElements[i].temperature = inst->thermalElements[i].temperature + (1.0 / inst->C_th) * (dtemp - inst->thermalElements[i].temperature) * dtime;
}
printf("dTemp: %f", dtemp);
//inst->heatsinkTemperature = inst->heatsinkTemperature + (1.0 / inst->C_th) * (Heatsink_RespVal(inst) - inst->heatsinkTemperature) * dt;
return inst->heatsinkTemperature;
return 0;
}
float cm_heatsinkEmul_getElementTemp(cm_heatsinkEmul_t *inst, int element_idx){
if(!isStructOk(inst)) return 0.0;
if(element_idx > (inst->thermalElements_Counts-1)) return 0.0;
return inst->thermalElements[element_idx].temperature;
int cm_heatsinkEmul_init(cm_heatsinkEmul_t *inst, cm_heatsink_thermalElement_t *elements, int elements_Count, float power, float ambientTemp){
}
if(inst == NULL)return 0;
if(elements == NULL)return 0;
if(elements_Count == 0)return 0;
int cm_heatsinkEmul_setFan(cm_heatsinkEmul_t *inst, float fan_speed){
if(!isStructOk(inst)) return 1;
inst->fan_speed = fan_speed;
return 0;
}
int cm_heatsinkEmul_init(cm_heatsinkEmul_t *inst, cm_heatsink_thermalElement_t *elements, int elements_Count, float C_th, float power, float ambientTemp){
if(inst == NULL)return 1;
if(elements == NULL)return 1;
if(elements_Count == 0)return 1;
inst->thermalElements = elements;
inst->thermalElements_Counts = elements_Count;
inst->power = power;
inst->ambientTemp = ambientTemp;
inst->C_th = C_th;
// Dynamic values
inst->fan_speed = 0;
// Assume all elements is equal to ambient before we start!
for(int i = (inst->thermalElements_Counts-1); i >= 0; i--){
inst->thermalElements[i].temperature = inst->ambientTemp;
}
return 0;