查询词典 piecewise differentiable function

The analyses show that the order of the general LMM may be reduced when the LMM is used to calculate piecewise smooth dynamics systems, and the precision of LMM is decreased.

分析表明，在计算非光滑的机械动力系统时，线性多步法类的数值积分方法出现降阶现象，计算精度会大大降低。

Firstly, this paper assumes that the surface of range image is piecewise smooth, and estimates curvature from the smooth piece of surface to which the current point belongs.

首先，提出曲面是分片光滑的假设，表面曲率需从该像素所属的光滑曲面片来估计。

An important field in vibration engineering is the dynamics of mechanical systems with piecewise smooth features, such as existing clearance, constraint, friction and hysteresis, It is possible to optimize practical system parameters by investi...

对其分岔与混沌行为的研究为工业实际中含间隙机械系统和冲击振动系统的优化设计提供了理论依据。

Horizontal Well ; Piecewise Smooth Dynamical Systems ; Impulsive Differential Systems ; Optimal Control ; Stability ; Initial Time Difference

国家自然科学；水平井；分段光滑动力系统；脉冲微分系统；最优控制；稳定性；初始时刻偏差

The corner-collision bifurcation of piecewise smooth systems is addressed.

推导了零时间不连续映射并给出角点碰撞分岔的分段映射。

The grazing bifurcation point is found in terms of the conditions for the existence of grazing orbit.The bifurcation diagrams are gained through previous piecewise smooth map and numerical calculation,they are similar structurally.

利用擦边分岔条件找到了此系统的擦边分岔点，利用推导的擦边分岔的分段映射和直接数值仿真获得不连续分岔图，两者得到的分岔图在结构上是类似的。

The work in this thesis could be concluded into four parts: 1. Theoretical analysis and numerical simulation are finished among three type of piecewise smooth rub models which include dual-linear rigid model, Hertz model and nominal rigid model.

本论文的主要工作分成以下四部分：第一部分：对三种分段光滑碰摩模型，即双线性刚度模型、Hertz模型和当量刚度模型进行了理论分析和数值仿真对比，确定了Hertz模型的优势地位。

A class of piecewise smooth maps with two border and three zones is derived to describe the dynamics of a current-programmed Buck converter operating in a discontinuous mode.

本文以不连续导通模式下的电流反馈型Buck变换器为例，推导出两个边界三段形式的分段光滑系统的离散映射模型。

The parameter space is included to construct a compound piecewise smooth map by composing previous discontinuity mappings with a Poincarémap for smooth periodic solution.

引入参数空间，将未发生碰撞的周期轨道对应的光滑映射与前面得到的不连续映射复合得到两类擦边分岔的分段映射形式。

Because of switching actions, power-factor- correction Boost converters are essentially piecewise smooth nonlinear systems, which leads to the occurrence of fast-scale bifurcations.

由于开关的动作，功率因数校正(power-factor-correc- tion，PFC) Boost变换器本质上是分段光滑的非线性系统，从而导致快时标分岔的产生。

We have something to do in the new stage.

在这段崭新的时期中，我们有一些要做的。

The difference between tourism decision-making under uncertainty and risky tourism decision-making is indistinctive.

其中不确定性旅游决策和风险旅游决策的界线比较模糊，两者的区分是相对的。