At last , the force vibration of the model is discussed by the method of principal mode superposition 用主振型迭加法简单讨论了弹性支承交叉梁系的强迫振动。
The vibration modal in ultrasonic frequency band is extracted and the natural frequency of work modal is determined through analyzing the characteristics of principal mode 通过分析各阶主振型的特点来确定电机工作模态的因有频率。
Compared with classic methods , the method presented in this paper has its advantages and can be regarded as a theoretical complement 同经典方法相比,本文方法有自己的优点,只需某一阶振动频率及其主振型即可直接求解杆件边界条件,可作为一种理论上的丰富。
Three kinds of control algorithms were used in this numerical simulation : the symbol control law , the first mode control law and the main mode control law Kobori提出的符号控制律和在符号控制律的基础上引申出的振型控制律(包括第一振型控制律和主振型控制律)对半主动控制装置进行实时控制。
主: host振: shake; flap; wield型: mould; model挠曲主振型: flexural principl mode振型: form of vibration; mode of vibration; mode shape; oscillation mode; vibration mode主振荡: principal oscillation主振动: main vibration; principal oscillation; principal vibration主振管: exciter tube主振器: driving unit主振子: main element复振型: complex modal shape横振型: transverse mode of vibration谐振型: mode of resonance激励管, 主振管: exciter tube晶体主振器: crystal master oscillator主振部分: driver unit主振荡电路: moc magnet oscillator circuit主振荡器: driving oscillator; king oscillator; main oscillator; mainvco; master oscillator set主振荡型: fundamental mode of vibration主振动器: master driver主振动形式: fundamental mode; principal mode of vibration主振频率: driving frequency; master frequency第二振型: second vibration mode第一振型: first vibration mode对称振型: symmetric type of vibration