Hi

I having trouble with

the steering of my line follower. The problem I'm having is getting the robot

to track a straight line at higher speeds. On a straight line

the robot corrects a bit to the left and overshoots

the line a tiny amount then it corrects to the right and

overshoots a bit more, then left, then right, etc. each time

with larger overshoot until it loses the line.

I expect the left right left right ... oscillation but I don't

understand why the overshoot is growing and growing.

I am using PID algorithm. and I am using 5 sensors. 2 on left, 2 on right and 1 in middle.

Any idea how I can decrease such oscillation ,I am tweaking PID constants but, with no effect at high speed.

Thanks