The available range of the homoclinic bifurcation criterions are extended from the weakly nonlinear oscillation system to the strongly nonlinear oscillation system. 以改进的规范形理论为基础,采用强非线性振动问题的分析方法,拓展了原有弱非线性振动系统同宿分岔判据的适用范围。
With the increase of driving frequency, the initial radii range of cavitation bubbles decrease, and the oscillation intensity reduces. 随着声波频率的升高,空化气泡的初始半径取值区间越来越小,空化振荡也越来越弱。
The result shows that while winter mean air temperature in Guangdong has a rising tendency, its range of oscillation is enlarged. 研究了广东冬季气温的气候变化,认为广东冬季平均气温在具有显著上升趋势的同时,变幅加大。
Vertical transport in doped GaAs/ AlAs superlattice with weak coupling is simulated by combining the macroscopic model with the microscopic one. The range of doping concentration and the voltage within which the spontaneous current oscillation is induced under the fixed applied voltage is also obtained. 结合宏观和微观模型,对GaAsAlAs弱耦合掺杂超晶格的纵向输运问题进行模拟计算,并给出产生电流自激振荡时的掺杂浓度和固定偏压的范围。
This paper discussed the stabilizing transformer as a corrected link, which was used to restrict the range value of the self sustaining oscillation of the system and keep it in the permissible range of technical conditions so as to guarantee the stability of the system. 本文论述了将稳定变压器作为校正环节,用以限制该系统自振幅值,使其保持在技术条件允许的范围内,以保证该系统的稳定性。
Tuning range of the waveguide laser is from 9.2 μ to 10.8 μ, and the oscillation at four bands of CO2 has been obtained. 波导激光器调谐范围从9.2~10.8μ在CO2的四个谱带均获得振荡。
Supersonic Wave ′ s Vibration Range Measurement System The Amplitude of Damped Oscillation 超声波加工工件振幅检测系统原理及部分信号处理电路阻尼振动的振幅
It is found that the surface-tension makes the frequency range of crosswise oscillation of solitons larger, the amplitude higher and the width smaller. 发现表面张力使孤波横向振动频率范围增大,振幅增高,宽度减小。
The main component combustion noise concentrates in the frequency range of 400~ ( 8 000 Hz) and is determined both together by the rate of pressure rise and the high-frequency oscillation of ( combustion) pressure. 燃烧噪声的主要成分集中在800~4000Hz频段,是由压力升高率和压力高频振荡共同决定的。
When the controlling tube was too long, too wide or too narrow, the jet would not oscillate. The range of the controlling tube length which caused jet oscillation became smaller with narrowing controlling tube; 控制管过长、过宽或过窄,均不能产生稳定振荡射流,音波振荡器正常工作时的控制管长范围随控制通道变窄而缩小;
Stable tracking platform have a wide range of applications because of its isolation carrier random oscillation and exercise in communication, guidance, fire control, etc. With the development of the computer, Strap-down inertial navigation as a type of inertial navigation gets more and more attention. 稳定跟踪平台由于其能隔离载体随机振荡和运动,所以在通信、制导、火控等方面得到了广泛的应用。捷联式惯性导航随着计算机的发展而越来越得到重视。
The range of speed where a limit-cycle oscillation occurs in the initial condition is studied. The relation of the amplitudes and the frequencies of the limit-cycle oscillation of the nonlinear airfoil and the velocities of the limit-cycle oscillation are studied. 对非线性气动弹性系统,研究了在初始条件下极限环振荡出现的速度范围,极限环振荡的频率和幅值与出现极限环的速度之间的变化规律。
At the same expansion ratio, the oscillation frequency of jet flow increases with the increasing inlet pressure, so does the size range of oscillation. ( 3) Effects on the oscillation frequency and the isentropic refrigeration efficiency of jet flow are studied. 膨胀比相同时,射流的振荡频率随入口压力的增大而增大,可振荡尺寸范围也增大。
By optimizing the design of the cylinder in feasible range, the natural frequency has been increased and the attenuation process of cylinder gap contact oscillation has been accelerated. 4. 3对滚筒进行优化设计,在可能的设计范围内,提高了滚筒的固有频率,加快了空档冲击响应的衰减过程。
The result for a wide range of disturbances shows that the proposed method can effectively detect the distortion points and can make real-time and accurate detection of a variety of disturbances, including Oscillation, frequency deviation and harmonic etc. 对多种电网扰动进行仿真测试,仿真结果表明了该方法可以有效地检测出信号的畸变点,能够实时、准确地检测多种电网扰动,包括振荡、频率偏移和谐波等等。
Phase shifter is added into the oscillator, forcing the working frequency of the sensors close to the center frequency, so the stability and the dynamic range of the oscillation circuit are improved. 在原有振荡电路中增加了移相环节,使传感器工作在中心频率下,提高了振荡电路的输出稳定度及动态响应范围。
The oscillation in Hall thruster can be divided into low-frequency, high-frequency and ultra high frequency oscillation in accordance with the frequency range; and due to the various mechanism of all kinds of frequency, the oscillation makes different effects on different engines. 霍尔推力器内振荡按照频率范围可以分为低频、高频和超高频振荡,各个频段的振荡由于其产生机理不同,对发动机的影响也不同。