Other Parts Discussed in Thread: DRV8305, TMS320F28027F
Hi,
I have the tms320f28027f Launchpad and the DRV8305 boost board mated to test Instaspin with a couple of BLDC quadcopter motors. I cannot seem to get a good ID on either motor. I can identify the poles on one fairly easily (14) but have no other parameters other than it is a 30V KV105. I am using the default values for a "MOTOR_type_Pm" setting in user.h and run the InstaSPIN_UNIVERSAL application (unchecking "use user.h") . During the "identify" run the motor starts out very rough and noisy, rotating both directions erratically, not improving any during the ramp-up. I have tried varying parameters that I find in documentation however nothing seems to improve. This is a good motor and is recognized and runs perfectly fine with a standard HobbyWing 80A-HV ESC. I want to build my own controller for learning purposes using the TMS320 and DRV8305 devices. I just can't get past a good ID with valid operating parameters. The demo and training videos all show how easy it is to identify an unknown motor but I guess I'm just missing something. If anyone has a pointer or suggestion to what I think is probably a simple fix I would be very appreciative. Thanks in advance for any help.
Regards,
Jon
