Based on the robot driver technique index, the principle of machine movement and control parts of clutch, accelerator, brake leg, and clutch leg and gear shift arm has been designed.

A double focusing, non spatial dispersion magnet design has been suggested to substitute the achromatic principle for improving the beam characteristics on target of the medical accelerator.

To explain the fundamental work principle of AFC for Siemens accelerator linear, summarize the experience which remove breakdown of AFC system element, optimize regulative method of AFC system.