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  1. jrddjr

    uncertainty of speed regulation

    Thanks to DickDV, ScottyUK, TTFN & nbucska for replies. A better description of my problem is followed: I want to predict the erorr probablity of a measuring device. An reasonable estimation of angular velocity ripple in one turn revelution of typical motor shaft which reported in literature is...
  2. jrddjr

    uncertainty of speed regulation

    Exactly, I want to calculate the measurment uncertainty of a measuring device. So I need the amount of angular velocity ripple in one turn revelution of motor shaft. the running Torque is about Max. 40Nmm and the load variation during running speed only is due to variation of frictional forces...
  3. jrddjr

    uncertainty of speed regulation

    I'm going to drive an spindel by a Dc motor and speed servo controller.I need uncertainty of speed regulation in one turn of motor shaft at the steady state running.I heard that it is function of the motor, not of the speed controller.Is this true? If it is true where I found a report? Thank you

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