Other Parts Discussed in Thread: BOOSTXL-DRV8305EVM
Tool/software: Code Composer Studio
Now I design a ESC board according to the BoostXL-DRV8305EVM and the launchpad-F28069M.I use the motorware16.
and I use the BoostXL-DRV8305EVM to identify my motor parameter.
#elif (USER_MOTOR == My_Motor)
#define USER_MOTOR_TYPE MOTOR_Type_Pm
#define USER_MOTOR_NUM_POLE_PAIRS (11) //kv420
#define USER_MOTOR_Rr (NULL) //kv420
#define USER_MOTOR_Rs (0.01386916) //kv420
#define USER_MOTOR_Ls_d (0.000008358466)//kv420
#define USER_MOTOR_Ls_q (0.000008358466)//kv420
#define USER_MOTOR_RATED_FLUX (0.007650606) //kv420
#define USER_MOTOR_MAGNETIZING_CURRENT (NULL)
#define USER_MOTOR_RES_EST_CURRENT (1)
#define USER_MOTOR_IND_EST_CURRENT (-1)
#define USER_MOTOR_MAX_CURRENT (30.0)
#define USER_MOTOR_FLUX_EST_FREQ_Hz (30.0)
then I run the lab05b program.once I set the gMotorVars.Flag_Run_Identify = 1,the motor begins to shake.and the mosfet is overheat.
why the motor begin to have a shake ?and what I should do to avoid the motor shake in close loop mode ?
the motor parameter is too small ?the motor id result is not accurate?
I just want to avoid the motor shaking when I enable the instaspin-foc algorithm.
when the motor has no load,I set the motor max current = 30A ,the motor can not start up well.
but when I set the max current = 5A ,the motor can start up well.
when I add the propeller to the motor ,I should set the motor max current = 30A ,in this case ,the motor is also have a little shake .
sometimes the motor can not start up,I try to reset the parameter.
#define USER_ZEROSPEEDLIMIT (1 / USER_IQ_FULL_SCALE_FREQ_Hz) from 0.5 to 5.
I want to know the realition ship between the motor max current and the start up program in instaspin-foc?
whether the max current can affect the motor start up process？
I use the lab07a program to implement the Rsonline function.I find that the gMotorVars.Rs_Ohm and the gMotorVars.RsOnLine_Ohm is refresh all the time .and they are not same.
at first,I think the gMotorVars.Rs_Ohm is the Rs_offline_recalc result or I set the USER_MOTOR_Rs in user.h?
for the gMotorVars.Rs_Ohm and the gMotorVars.RsOnLine_Ohm, which one is the detect Rs by Injected Current ?
where the oher value come from?
I want to use the lab07a to implement the Rsonline function in current loop mode.
but the lab07a is in speed mode .and I can not find the flag between the speed loop and the current loop.
what should I do to make the lab07a work in current loop mode ?
thanks
