作为被动式转子振动控制元件的限位器在限制转子大幅度低频进动和过临界大不平衡响应中有良好的表现 ,为研究限位器设计和转子与其碰摩的动力行为 ,设计了转子与限位器碰摩试验台 ,进行激振碰摩实验 ,利用电容式接触传感器测量出激振碰摩过程中转子与限位器接触频度和时间 ,引入摩擦度描述碰摩的程度和频度 ,分析碰摩接触时间的统计分布特点 ,讨论了碰摩失稳运动的摩擦度特征及其影响因素。 As a passive rotor vibration control element of the stopper in limiting the large low-frequency precession and critical large unbalance response has a good performance, in order to study the design of the stopper and the rotor and its rubbing the dynamic behavior of the rotor and the Limiter rub test bench for vibration rubbing experiments, the use of capacitive touch sensor to measure the process of vibration and friction touch the rotor and limiter contact frequency and time, the introduction of friction to describe the extent and frequency of rubbing The statistical distribution characteristics of rub-impact contact time were analyzed. The friction characteristics of rub-impact motion and their influencing factors were also discussed.