A Vibration Control for Disassembly of Turbine Blades.

Abstract

Typically disassembly forces are unknown due to high forces or high temperatures during product operation, so that assembly connections solidify. For controlling the disassembly forces a control is developed. The controller is formed for two steps: The first step is a control by a PID controller that produces a force, which overcomes a solidifying force slightly. The second step is a vibration control with a FM modulation for controlling the duration of impacts. Vibrations are useful for decreasing the force amplitude for caring the joined components. Finally, the control is validated with disturbances in a simulation.