2 Replies Latest reply on May 20, 2016 3:54 AM by mshaw_1645411

    Sensorless FOC - SpeedEstimator (CY8CKIT-042(MCU board) + CY8CKIT-037(Driver Board))

    mshaw_1645411

      Hi,

         

      Is there anyone from Cypress that can tell me what the Low Pass Filter is that is used in the Speed Estimator calculation?

         

      /* struct definition for speed estimator*/
      typedef struct 
      {
         q15_t curTheta;              /* Current Electrical angle            */ 
         q15_t oldTheta;               /* Old Electrical angle                */
         q15_t estimatedSpeed;        /* Estimated speed in per-unit        */
         q15_t baseRpm;                 /* Base speed in rpm                */
         q15_t intervalConst;           /* Constant for differentiator      */
         q15_t filterConst;             /* Constant for low-pass filter        */
         q15_t estimatedSpeedRpm;     /* Estimated speed in rpm              */
      } SpeedEstimator;      

         

       

         

      Thankyou.