hello everyone

I need to help about setting of pid values for task

The task is moving of robotino 1.5 m on forward direction with 1.5 m/s and it is moving back to starting point with 1 m/s
The necessary rpms and incremental value is calculated but when we are starting task robotino almost goes 15 cm forward and backward positions. We are applied p=1 i=0.95 d=0.1. We need to know which pid values correct for this task. Thanks for attention have a nice days