here Iāve changed sensorless erpm under hall sensors to 50k instead of 2.5k and the motor spun as smooth as it was shown in BLDC mode, so what is this ? and how its called sensorless erpm and its under hall sensors ?? ( the motor doesnāt spin when i unplug hall sensors cable)
yee I tried the playing with open loop erpm and increased open loop time to 3 sec , both motors were running ( but rough) in open loop for 3 sec and stutter then 3 sec open loop and so on, here I knew there is something wrong with the sensorless feedback .
BUT
in the detection the small motor works so smooth the big one sometimes work and sometimes no, and it results shows hall sensors, so it detects the feedback , at FWD and REV it spins normally but when I unplug hall sensors it doesnāt spin
after all of this I noticed something ( but not sure yet) the shushing sound from motor on FOC is becuase motor rotor is hollow ( 3d printed ) with the FOC frequency it resonate and we hear this resonance, and Iām not sure its running in FOC for real or not, I donno if what I wrote would be useful for someone or not, but i believe its enjoyable to know someones struggles lol
I will build another motor with solid rotor to reduce resonance and upload the test results here as soon as I finish , and I may build a small dyno to test efficiency too ( someone told me to buy motor but its too expensive to buy the motor I need and shipping motors to Egypt is very expensive ( shipping and customs ) so Iām building them XD
āSensorless ERPMā in the Hall Sensors settings is the speed above which the hall sensors arenāt used. Sensors are only used to start from a stop.
it seems i miss many useful information about motors
so lets rephrase what you said
senseors are used when motor starts and when its loaded to keep phases in sequence all the time and never miss any step even when loaded excessively
If that didnāt work, then I donāt know what it could be. It might help if you could take it apart and check if there is any noticeable damage to the inside
hi everyoneš Maybe someone here can help me please.? I have a flipsky 75200 controller on my bike everything works fine for me except for one thing. when I move the bike backwards I canāt give gas to go forward, the gas handle doesnāt respond, it happens to me when I climb a hard mountain and stop for a moment, only if I stop completely I can give gas,and if I even go backwards a little bit the throttle stops responding. (the bike only has a mode of traveling forward)
Hi, thanks for the response. I canāt find setting of min erpm it is registered under a different name? or can you tell me where it is? I use foc hall sensor
)
hi im using current