Dear sir,
my application-- movement is ball screw feed, driven by AC servo motor, and a linear encoder of 10nm resolution is integrated into the closed-loop feedback.
I want to improve the effect of sinusoidal move via adjusting the pid parameters.
Step tuning
Kp is just 80.
Parabolic tuning
the entire following error is big, especially on the motor’s directions reversals
Sinusodial tuning
the following error is so bad on the motor’s directions reversals.
can i improve the situation using PMAC,or should i improve the mechanical structure.
can any one spare me a help?
3q
