> On 03/25/2016 01:26 PM, Nicklas Karlsson wrote: > > As someone mentioned before a the an axis/joint may/will run away in > > case of an encoder failure. > > > > It would be possible to detect an encoder failure by comparing output > > signal with encoder signal. A velocity signal may be integrated and > > do not allow to wander to much or an encoder error will be detected. > > A torque signal would be worse. > > An encoder that fails into runaway (motion erroneously detected when > none is occurring) or that fails into stop (no motion detected when > motion *is* occurring) will both result in a following error, precisely > for the reason you say above: linuxcnc compares the commanded position > with the feedback position from the encoder. > > > -- > Sebastian Kuzminsky
No if no motion is detected and there is a small error linuxcnc will output a signal to correct it and machine start to move. Since no feedback is detected integrator will turn up speed and machine run away. Nicklas Karlsson ------------------------------------------------------------------------------ Transform Data into Opportunity. Accelerate data analysis in your applications with Intel Data Analytics Acceleration Library. Click to learn more. http://pubads.g.doubleclick.net/gampad/clk?id=278785351&iu=/4140 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
