给出了系统分别存在稳定极限环和不稳定极限环的条件。
The conditions were given to ensure the system has stable limit cycle and unstable limit cycle, respectively.
风洞吹风中测出了单稳定极限环、双稳定极限环颤振的情况。
Both single and double stable limit cycle flutter states are found.
从理论及实验两方面，研究了带外挂后掠机翼的极限环颤振分叉现象，得到了稳定、半稳定及不稳定极限环。
Both theoretical and experimental analyses are performed to investigate the limit cycle flutter bifurcation of a sweepback wing with an external store in the tip of the wing.
本文根据极限环特性对单舍入量化器二阶数字滤波器的零输入稳定性进行了分析。
In this paper the zero-input stability of second-order digital filters with a rounding quantizer has been analyzed by the properties of limit cycles.
换句话说，在另一较高的串联补偿度上，轨道不稳定的极限环将从原来渐近稳定平衡点上分岔出来，系统的稳定性态将被改变。
In other words, the unstable limit cycle will be bifurcated from the original asymptotical stable equilibrium point at another higher series compensation level, and the system dynamics will change.
应用常微分方程定性方法，得到了正平衡点的全局稳定性和非小振幅极限环的存在唯一性的充分条件。
By using the qualitative methods of ODE, the positive equilibrium's global stability and existence and uniqueness of non-small amplitude stable limit cycle were obtained.
研究了分散继电反馈系统极限环的全局稳定性问题。
The global stability problem of limit cycles for decentralized relay feedback systems is studied.
引入平衡点、极限环及其稳定性的概念，以此为基础我们讨论自激振动的特点和机制。
The conceptions of balance point, limited cycle and their stability are introduced as the basis of the author's discussion on the properties and mechanism of self-excited vibration.
最后根据细焦点的稳定性判断出极限环的存在性。
Finally the existence of the limit cycle is obtained by using the stability theory of the weak focus.
为此给出了AR型非线性时间序列模型的稳定性条件及极限环存在条件，并对一些特殊模型进行了讨论。
The stability conditions and the existing conditions of limit cycle of AR-type nonlinear time series models are given. Some special models are discussed.
在两个参数平面上研究了系统在余维二分叉点附近的不同区域内平衡点和极限环的稳定性及其个数。
The stabilities of the equilibrium points and limit cycles in different regions of two parameter plane are studied.
给出了其极限环存在性、唯一性以及稳定性的证明。
It is not satisfied general condition for existence of a stable limit cycle.
几乎所有的学者只针对极限环内含奇点的情况，讨论了极限环的存在性、唯一性、稳定性以及如何产生与消失。
Almost all of scholars only studied the possible appearance or disappearance of a limit cycle surrounding a singular Point.
几乎所有的学者只针对极限环内含奇点的情况，讨论了极限环的存在性、唯一性、稳定性以及如何产生与消失。
Almost all of scholars only studied the possible appearance or disappearance of a limit cycle surrounding a singular Point.
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