Author:
He Ying,Liu Lei,Zhou Hao,Chu Xinshua
Abstract
Based on the shortcomings of the current detection methods for wind power blades, an electromagnetic excitation biaxial fatigue loading system is designed. The loading method mainly adopts the principle of electromagnetic actuators. The loading part is mainly composed of electromagnet cores and coils. The blades exert electromagnetic force to achieve blade vibration. The dual-axis loading can be more in line with the actual working conditions of the blade. Electromagnetic loading mechanisms are installed in the two directions of the blade's waving and swaying respectively, and the electromagnetic force is applied in the two directions of the blade's waving and swaying at the same time. Vibration frequency, so that the vibration reaches the natural frequency of the blade. In addition, the clamping mechanism of the blade is improved, and a mechanical clamping mechanism is designed, which comprehensively uses the ball screw, timing belt, ratchet and came to realize the positioning and clamping of the blade.