According to phase modulation method, this thesis discussed several phase shift angle measurement solutions and decided to adopt phase-sensitive detection method for measuring the phase shift angle. 针对相调制法,本文讨论了测量相移角的几种方案,并最终确定采用相敏检波技术测量相移角。
The results show that the phase shift angle transits from random state to a relatively stable along state with the formation process of cutting chatter and the phase shift angle becomes stable in the early stage of cutting chatter growth. 结果表明,随着颤振的产生,该相位差由无序状态逐渐过渡到相对稳定的状态,并且相位差在颤振产生初期就已经相对稳定。