Abstract:
Abrasion is the primary cause for the failure of the roller screw drive type CRDM. This paper describes a method of CRDM roller state diagnosis based on computer simulation. Through a common simulation software ADAMS, the vibration characteristics of the roller under normal conditions, pit defects and excessive abrasion have been obtained. Research indicates that the roller will have a significant impact signal while working. With the deterioration of conditions, the impact signal will be enhanced.