Can someone give some good pictural examples of bode plots (amplitude in decibel, and phase in ° in function of frequency in logaritmic scale) of a system with electrial motor with gearbox, connected to a load. Considering there is some degree of torsion and friction in the system?
Bode plots of motor and load
- Thread starter Plc_User
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Peter Nachtwey
Member
No gear box. The gear box only changes the apparent load.
http://deltamotion.com/peter/Mathcad/Mathcad - DC Motor Velocity.pdf
I was showing how I would approach the problem shown here.
http://www.engin.umich.edu/group/ctm/examples/motor/PID2.html http://www.engin.umich.edu/group/ctm/examples/motor2/motor.html
Much of my pdf was done to show how one can calculate the relative ratio of the inner loop bandwidth to the outer loop bandwidth. I wanted to debunk some myths and show how following the myths may not work at all.
http://deltamotion.com/peter/Mathcad/Mathcad - DC Motor Velocity.pdf
I was showing how I would approach the problem shown here.
http://www.engin.umich.edu/group/ctm/examples/motor/PID2.html http://www.engin.umich.edu/group/ctm/examples/motor2/motor.html
Much of my pdf was done to show how one can calculate the relative ratio of the inner loop bandwidth to the outer loop bandwidth. I wanted to debunk some myths and show how following the myths may not work at all.
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