Rigidity Experiment on Coil-Moveable Electromagnetic Drive Mechanism for Reactor Control Rod

This work concerns in the rigidity experiment of coil-moveable electromagnetic drive mechanism for reactor control rod. It was carried out on experimental stage of the engineering prototype. The calculated average rigidity values at various currents are as follows: 129 N/mm for 3 A, 136 N/mm for 3.5 A, 152 N/mm for 4 A, 168 N/mm for 4.5 A, 164 N/mm for 5 A. The rigidity linearly increases with the coil’s current. The coil’s temperature influences the rigidity, and the high coil’s temperature can reduce the rigidity.