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CLI motors graphics comparing to throttle

Posted by chris on February 18, 2013 at 9:33am

Hey guys,

Looking to CLI motors graphics I did notice there is big difference between motors 1,2 versus 3,4, see below top graphic.

The quadX is staying fix on ground, no props. When throttle is moving up (see below 2nd graphic), it looks just motors 1&2 follow the throttle, but not 3,4. Any idea why should not be in synch?

The TX was calibrated and then ESC was calibrated one by one and level was done for X quad.

Thanks,

Chris

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Replies

  • R. D. Starwalt February 19, 2013 at 4:54am

    What mode were you performing the test in?

    DaveC has good points. If you were in Stablized mode, the APM is trying to compensate and keep the airframe level. One would think that the motors would track moderately close, mine do when flying.

    -=Doug

  • Dave C February 19, 2013 at 2:44am

    It's most likely due to your floor not being level, or the copters heading slightly different to what is expects itself to be.The motors should not be in sync as such, they dynamically (and quickly) change their speeds to keep your apm totally level and control your attitude. Therefore they will never truly be in sync until you are in a perfect hover.

     

    The two motors that are running slow are likely higher that the two that are running faster. If you move the quad about, tilting it over do the appropriate motors speed up and slow down?

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