Patent ID: 9683461
Date: 2017-06-20
CPC Classifications: F01D,Y10T

Claim:
1. A device for positioning a rotor of a gas turbine, the device comprising: a linearly movable rod that is moveable to actuate a ratched wheel coupled to the rotor of the gas turbine, the ratched wheel coupled to the rotor such that the rotor is rotatable via motion of the ratched wheel; an eccentric wheel connected to the rod such that rotation of the eccentric wheel drives linear motion of the rod; a motor connected to the eccentric wheel to rotate the eccentric wheel to drive linear motion of the rod; a motion controller connected to the motor such that said motor is controlled by the motion controller, the motion controller configured to calculate a trigonometric trajectory conversion from rotary movement of the motor to linear movement of the rod, the motion controller also configured to calculate torque needed for linear force required for the linear movement of the rod to be driven via rotation of the eccentric wheel to be driven by the motor.