universal_components/cm_heatsink_emulator
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not done yet because calculation is wrong..

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This commit is contained in:
Christian Lind Vie Madsen
2025-10-14 11:24:31 +02:00
parent dbb313977c
commit a735848834
2 changed files with 33 additions and 10 deletions
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33
cm_heatsink_emulator.c
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@@ -11,21 +11,40 @@
static float deltaTempElement(cm_heatsink_thermalElement_t *element, float temperature, float power){ static float deltaTempElement(cm_heatsink_thermalElement_t *element, float temperature, float power){
return temperature + (power * element->thermal_resistance); return temperature + (power * element->R_th);
} }
float cm_heatsinkEmul_getRespon(cm_heatsinkEmul_t *inst, float dt){ float cm_heatsinkEmul_getRespon(cm_heatsinkEmul_t *inst, float dtime){
float t = 0.0; float dtemp = inst->ambientTemp;
for(int i = inst->thermalElements_len; i > 0; i--){
for(int i = inst->thermalElements_Counts; i > 0; i--){
dtemp+= deltaTempElement(&inst->thermalElements[i], dtemp, inst->power);
} }
inst->heatsinkTemperature = inst->heatsinkTemperature + (1.0 / inst->thermal_capacity) * (pj5_ThermEmul_Heatsink_RespVal(inst) - inst->heatsinkTemperature) * dt; printf("dTemp: %f", dtemp);
return v_prev; //inst->heatsinkTemperature = inst->heatsinkTemperature + (1.0 / inst->C_th) * (pj5_ThermEmul_Heatsink_RespVal(inst) - inst->heatsinkTemperature) * dt;
return inst->heatsinkTemperature;
}
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;
inst->thermalElements = elements;
inst->thermalElements_Counts = elements_Count;
inst->power = power;
inst->ambientTemp = ambientTemp;
return 0;
} }

10
cm_heatsink_emulator.h
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@@ -7,27 +7,31 @@
#ifndef CM_HEATSINK_EMULATOR_H_ #ifndef CM_HEATSINK_EMULATOR_H_
#define CM_HEATSINK_EMULATOR_H_ #define CM_HEATSINK_EMULATOR_H_
#include <stdio.h>
#include <stdint.h>
typedef struct { typedef struct {
char label[32]; char label[32];
float thermal_resistance; // In Kelvin/Watt or Celsius/Watt (you can mix!) float R_th; // In Kelvin/Watt or Celsius/Watt (you can mix!)
}cm_heatsink_thermalElement_t; }cm_heatsink_thermalElement_t;
typedef struct { typedef struct {
cm_heatsink_thermalElement_t *thermalElements; cm_heatsink_thermalElement_t *thermalElements;
int thermalElements_len; int thermalElements_Counts;
float power; float power;
float ambientTemp; float ambientTemp;
float thermal_capacity; float C_th; // Thermal capacity
// Dynamic // Dynamic
float heatsinkTemperature; float heatsinkTemperature;
}cm_heatsinkEmul_t; }cm_heatsinkEmul_t;
float cm_heatsinkEmul_getRespon(cm_heatsinkEmul_t *inst, float dt);
int cm_heatsinkEmul_init(cm_heatsinkEmul_t *inst, cm_heatsink_thermalElement_t *elements, int elements_Count, float power, float ambientTemp);
#endif /* CM_HEATSINK_EMULATOR_H_ */ #endif /* CM_HEATSINK_EMULATOR_H_ */