Hi I have just designed a BLDC controller and I have it running in both CW and CCW directions. I have noticed that when operating in CCW the motor is less noisy and more smoother than when operating in CW. I was wondering if the hall sensors need to be repositioned for CW operation or perhaps is there a requirement to use 2 sets of sensors, 1 set for CCW and 1 set for CW to make the operation more smoother?

  • \$\begingroup\$ Your problem probably mechanical. \$\endgroup\$ – user263983 Apr 11 at 14:13
  • 1
    \$\begingroup\$ More likely you need to adjust the timing relationships in the controller when switching direction. \$\endgroup\$ – user_1818839 Apr 11 at 17:01

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