固有稳定性

Some methods which are about how to get natural frequency, the computational and experimental methods of the vibration modes, and the computational methods of the critical velocity and the analysis of stability are included.

进一步探讨了圆锯片的振动特性，包括圆锯片固有频率的获得方法，振动模态的实验与理论计算方法，临界速率的计算方法以及稳定性分析等。

Applying energy variation principle, we give equation s defining parameters in flexural function, stability equation , frequency equation , and general formulae of minimum critical force and minimum eigenfrequency as well.

应用能量变分原理，给出了确定挠曲函数中待定参数的方程，以及稳定性方程和频率方程，给出了求最小临界力和最小固有频率的一般公式。

However, for the anolog circuit's flaws in itself, the controllers in ultrasonic peening machine can not match the speed which they should track. Therefore, the machine is apt to disarrangement in the working state or even can not work in some cases.

但由于其模拟电路本身固有的缺点，超声冲击机内部控制电路频率跟踪系统的速度和精度以及稳定性均达不到要求，从而造成系统失谐，机器不能正常运转。

Three magnetic amplifier s, such as adjustable-damper controlling, speed-limited protection in deceleration segment, and automatic braking largely used in alternated-elevator system in nation's coal and metallurgy exhibit quickness and firmness.

我国煤炭和冶金矿山大量使用的交流提升机，控制系统采用的可调闸控制、减速段限速保护和减速阶段电气制动三个磁放大器装置，存在快速性、稳定性、对环境参数的依赖性、敏感性均较差等固有弊端，采用现代电子器件和先进的控制技术取代原控制系统中的1CF、2CF、 3CF三个磁放大器及其落后的控制技术，并增加全新的电子速度给定环节，改善提升机性能

He existence and stability of the nontrivial and nonnegative steady-state solution of an ecological predator-prey system with the reaction-diffusion term are discussed.

应用渐近展开的方法构造生物学里提出的一类具有反应扩散项的捕食者─食饵系统的非平凡非负定态解，并应用固有值的解析摄动理论对所获得的非平凡非负定态解进行了稳定性分析。

A comparison of stability of nano and pico sliders is also made in this paper.

耦合系统固有频率与扰动频率相差越远，系统稳定性越好。

This makes they inherently stable thermally and practically impossible to destroy. they are preferred for audio applications.

这使得它们有固有的温度稳定性而几乎不会损坏，它们用于音频是首选。

In many practice problems such as to know the resonnance frequency of a structure and to know the critical value for the stability of a dynamical system,often need to compute the eigenvalues of a symmetric matrix. The chief method to compute the eigenvalues of a symmetric matrix is first to transformate the matrix to a symmetric tridiagonal matrix similarly and orthogonally, then to use the QR method with shift to the symmetric tridiagonal matrix.

很多实际问题，如求结构振动的固有频率，动力系统稳定性的临界值等常常归结为计算对称矩阵的特征值，而首选的计算方法是先把该矩阵正交相似变换成一个对称三对角矩阵，再对这个对称三对角矩阵用带位移的QR方法。1968年J.H。

With the developing trend of large size and large capacity, the turbine's natural frequencies are decrescent, maybe reaching the input forces' order of magnitude. So, it is becoming more and more important to analyze the stability of a turbine.

随着水轮机组朝着大尺寸、大容量的方向发展，其自身的固有频率也随之降低，与干扰激振力的频率属于同一数量级，因此，水轮机组运行的稳定性就变成更为重要的问题。

It reports the effect of water to the order frequencies of frame,and gained the relationship between stiffness ratio of the gate and the plane steel frame of the radial gate.

对弧形钢闸门主框架动力稳定性进行了分析，考虑了水深对框架固有频率的影响，并比较梁柱刚度比对弧门主框架动力稳定性的影响关系。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。