1)  saddle node bifurcation
鞍结点分叉
1.
Then the saddle node bifurcation is used to explain the mechanism of asychronus operation of generator sets caused by loss of excitation.
考虑发电机组机电量间的耦合 ,建立了同步发电机 Park方程与机械扭振方程相结合的暂态非线性方程组 ;采用鞍结点分叉解释了机组欠激磁失稳异步运行的机理 ,并应用中心流形理论分析了鞍结分叉点附近的动力学特性 ;数值仿真分析了失磁异步运行时机组轴系的扭振和功率角的振荡等机电量的变化规律 ;最后利用实验室发电机组进行了实验研究 ,与理论分析结果吻合良好 。
2)  tuberculum sellae
鞍结节
1.
Keyhole approach for resection of tuberculum sellae meningiomas;
锁孔入路显微手术切除鞍结节脑膜瘤
2.
32 cases report on surgical treatment of tuberculum sellae meningioma;
手术治疗鞍结节脑膜瘤32例报告
3.
Objective To evaluate the technique and effect of supraorbital keyhole approach for removing tuberculum sellae meningiomas.
目的评价眶上匙孔入路切除小型鞍结节脑膜瘤的技术和效果。
3)  saddle-node bifurcation
鞍结分岔
1.
The analysis indicated that SVC control could delay saddle-node bifurcation point and enhance voltage stability greatly.
研究表明SVC控制可以延迟系统鞍结分岔点,大大提高系统电压稳定性。
2.
In order to modify the steady-state resonance responses,a nonlinear parametric feedback control was proposed to reduce the amplitude of the response and to eliminate the saddle-node bifurcations that take place in the resonance responses.
设计了非线性参数控制器来改变参数激励系统的稳态响应,消除了系统主共振时的鞍结分岔和减小了系统稳态响应的幅值。
3.
The simulation was carried out under Matlab software environment,and continuation method was adopted in tracing equilibrium solution manifolds of the system;and the saddle-node bifurcation point was calculated by direct method.
为了揭示含风电电力系统的分岔现象及电压失稳的机理,对3机9节点的电力系统加入风电场(基于恒速恒频机组构成)并网等值模型进行仿真研究,以MATLAB软件为计算工具,用延拓法追踪系统平衡解流形;用分岔理论中的直接法计算鞍结分岔点。
4)  saddle node bifurcation
鞍结分岔
1.
It was proved that there exist homoclinic trajectories of a quadratic system in the range of the parameter of the saddle node bifurcation.
在鞍结分岔的参数范围内证明了具有鞍结分岔的二次系统都存在同宿轨道 ,得到了同宿轨道的解析表达式及其幅值与分岔参数的关系 。
5)  saddle node bifurcation
鞍结分叉
6)  saddle-node point
鞍结点
1.
In this paper, we obtain a necessary and sufficient condition for the existence of a parabolic separatrix that connects a saddle-node point with a hyperbolic saddle point in a class of systems, which gave premise condition to analytic study semi-local bifurcation of a separatrix connecting a saddle-node point with a hyperbolic saddle point.
讨论了一类系统存在鞍结点分界线与双曲鞍点连线的条件,得出鞍结点分界线与双曲鞍点连线是对称轴平行于y轴的抛物线的充要条件,为研究这类系统存在鞍结点分界线与双曲鞍点连线的半局部分支提供了前提条件。
参考词条
补充资料：鞍点
分子式：
CAS号：

性质：数学上同时具备极大与极小性质的点。应用于三维势能面及裂变核势能曲面上，与反应坐标相垂直的方向上过渡态位于势能的最低点，发生对称伸缩振动。在沿反应坐标方向上过渡态位于势能的最高点，发生不对称伸缩振动。过渡态在势能面所处的这一点即势能面的鞍点。

说明：补充资料仅用于学习参考，请勿用于其它任何用途。