A mixed type of gear transmission was dynamics modeled by Pro/E and ADAMS.Based on the dynamics model
the output displacement of the PID two-loop control system for the gear transmission was modeled by the control toolkit of ADAMS/View.The virtual prototype of the control system for gear transmission is assembled.The simulation results of several classical input signals indicated that the virtual prototype of the control system for gear transmission is validity
and the control system can meet the engineering control aim.