Abstract : according to appearances of multi - frequency grinding chatter and signal - modulating principle , the regenerative modulating chatter based on amplitude - modulating principle in grinding process is advanced , and further theoretical analyses and experimental researches about regenerative modulating chatter are carried out 文摘:根据对颤振多频现象的分析及信号调制原理,提出了磨削加工中基于幅值调制原理的再生调制型颤振,并对再生调制型颤振进行了理论分析和试验研究。
In order to improve the existing pr adaptive optical heterodyne detection system ( praohds ) , a new praohds is proposed based on sppc and mppc coexistence . the experimental study of the system is completed by equal amplitude ar + laser beams , poorly coherent equal amplitude solid - state laser beams and high speed amplitude - modulated solid - state laser beams through distorting media . experimental results indicate that the new system is applicable 为了改进现有的光折变自适应光外差探测系统( praohds ) ,本文利用sppc和mppc同时共存的特性,提出了一种新型的praohds ,并利用ar ~ +等幅激光、相干性较差的固体等幅激光以及固体高速振幅调制激光对新系统进行了畸变光束的自适应光外差探测实验研究,结果证明了新系统在实际应用中的可行性。
Then by the method of computer simulation , the following jamming patterns are made quantitative analysis , radio - frequency noise jamming , continuous single tune jamming , continuous noise amplitude - modulated jamming , relayed frequency shift jamming , and the key factor which affect the quality of these jamming patterns 然后在此基础上,通过计算机仿真分析,定量地讨论了射频噪声干扰、连续正弦波干扰、转发移频脉冲干扰以及影响它们干扰品质的因素,并以压制系数为衡量标准,进行了干扰效能分析。