s curve

A conjunctive spot S-curve velocity look-forward control profile is proposed, the maximal linkup speed at the conjunctive spot is determined by the actual conditions of the conjunctive spot on the process route at first.

提出了型值点S型曲线加减速前瞻控制算法,先根据加工路径的型值点实际情况,确定每一型值点处的最大衔接速度,然后采用S型曲线加减速控制,实现各路径段之间进给速度的快速衔接,从而达到高速高精的运动控制目的。

A conjunctive spot S-curve velocity look-ahead control method is applied in this system.

运用了型值点S型曲线加减速前瞻控制算法,根据加工路径的型值点的实际情况,确定每一型值点处的最大衔接速度,采用S型曲线加减速控制,实现各路径段之间进给速度的快速衔接,从而达到高速高精的运动控制目的。

Quantitative prediction of landslide using S-curve;

能够反映滑坡如此运动过程的典型数学函数是Pearl曲线,本质上此S型曲线与系统有阻尼的自由振动微分方程是一致的,也与生物群体演化的虫口方程一致,它们都共同反映了物质运动的一般规律,因此可以用来预测滑坡运动过程。

Through the analysis about superelevation calculation in middle of S type curve,The author brings forward the improvement method of oblique ridge road arch in convolution engagement of S type curve.

根据S型曲线在超高过渡计算时遇到的具体情况进行分析,提出了对"S型曲线"在两反向回旋线衔接处进行用斜脊式路拱设计的改进方法。

The article show the method of design and calculation of S type curve in two familiar sight in high grade road design.

本文阐述了高等级公路线形设计中 ,在两种常见情形下 ,应用“曲线法”进行 S型曲线的设计与计算。

The thought of defining characteristic section and dividing superelevation transition segment into several smaller segments according to the characteristics and types of S-type curve s superelevation transition segment is put forward.

根据S形曲线超高过渡的特点、类型确定超高过渡段中的特征断面,提出S形曲线超高过渡分段处理的思路,并给出S型曲线超高过渡段上任意桩号处、横断面上任意点超高值的简单计算公式。

Based on the principles of autocatalysis and the theory of entropy, this paper tries to discuss and attest the autocatalytic mechanism in systems which cause general S curve.

运用熵理论和自催化原理对系统发展过程中普遍存在的 S型曲线的成因进行了论述和证明 ,指出系统出现 S型发展曲线是由系统的自催化机制和系统的限制因素共同作用引取。

Results showed that the growth and development of White-Cheeked Starling′s nestlings was divided into three period, the nestlings growth presented the “S” type curve.

结果表明:灰椋鸟雏鸟生长发育分为三个时期,雏鸟生长呈现“S”型曲线。