查询词典 unstable equilibrium

The control aim was realized. Based on special sliding-mode control with parameter identification, the unified chaos was led to unstable equilibrium point.

基于特殊的滑模控制方法结合参数辨识对含有未知参数的统一混沌系统实现了不稳定不动点的跟踪控制。

In the balance area, an LQR controller is designed using a linear approximate model of the unstable equilibrium position to accomplish balance control.

在平衡区，采用在不稳定平衡点的线性近似模型来设计LQR控制器，实现Acrobot的平衡控制。

C' is the first known homogenous object with one stable and one unstable equilibrium point, thus with two equilibria altogether on a horizontal surface.

贡博茨'是第一个已知的同质对象，一个稳定的和一个不稳定的平衡点，从而完全有两个均衡水平上的表面。

It may be worth noting that this analysis in terms of "attainable areas" resolves in a satisfactory way the question of stable versus unstable equilibrium positions, which has been much discussed in the literature in terms of an alleged conflict between the "Walras" and "Marshall" conditions.

值得提请注意的是，这个关于"可实现领域"的分析，以一种令人满意的方式，解决了稳定与不稳定均衡状态的问题——这个问题在文献中以所谓的"Walras"和"Marshall"的条件之争的形式有过很多讨论。

Eta Carinae, a star between 100 and 150 more massive than the Sun, is near a point of unstable equilibrium where the star's gravity is almost balanced by the outward pressure of the intense radiation generated in the nuclear furnace.

Eta Carinae，质量是太阳的100到150倍，这是一个不稳定平衡的临界点，也就是恒星的引力通常靠核反应堆所产生的强烈辐射制造的外层气压来平衡的。

Since displacement along the axis can continue indefinitely, these as known as points of unstable equilibrium.

因此，这些点被称为不稳定平衡点。

A sufficient condition is derived under which the unstable equilibrium point of the advertising strategy can be stabilized by advertising control at discrete moments, and a theorem on the stability of impulsive control system is derived.

在离散时刻引入广告控制，给出使得广告策略的不稳定平衡点达到稳定的充分条件，得到了脉冲控制系统稳定的一个定理。

In this paper, we firstly make some qualitative analysis to Lorenz critical chaotic system, and then lead it to the corresponding unstable equilibrium point and periodic orbits in terms of the linear state feedback approach. Then we make a lot of simulations which indicate this method to be feasible. Fractional-order system, as well as Lyapunov exponent, has been used as a powerful tool for the quantitative study of chaotic systems.

本文首先对Lorenz临界混沌系统进行基本定性分析，然后利用线性状态反馈方法将其制到相应的不稳定的平衡点与周期轨道上来，并证明了被控制的Lorenz临界系统是全局渐进稳定的，并对取得的结果作了大量的数值模拟，模拟结果证实该控制方法简单有效可行。

A method to solve the function for the absolute minimum saddle point and critical unstable equilibrium points is presented that method is used to decompose the non—convex energy function into two convex functions.

临界机的选取，本文采用以发电机转子暂态非同步动能作为判据的方法，经两算例的计算，比用最大加速度法具有更好的精度。

The feedback controls, including linear, speed, doubly-periodic function, hyperbolic function and trigonometric function are used to suppress chaos to one of the three unstable equilibrium. The Routh-Hurwtiz theorem is applied to derive the conditions of stability of the controlled system.

利用反馈控制方法，包括线性、速度、双周期函数、双曲函数和三角函数反馈控制方法将系统的混沌运动控制到稳定态，根据Routh-Huriwtz准则获得了系统达到控制目标时反馈系数所满足的条件。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。