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.
提出了型值點(diǎn)S型曲線加減速前瞻控制算法,先根據(jù)加工路徑的型值點(diǎn)實(shí)際情況,確定每一型值點(diǎn)處的最大銜接速度,然后采用S型曲線加減速控制,實(shí)現(xiàn)各路徑段之間進(jìn)給速度的快速銜接,從而達(dá)到高速高精的運(yùn)動(dòng)控制目的。
A conjunctive spot S-curve velocity look-ahead control method is applied in this system.
運(yùn)用了型值點(diǎn)S型曲線加減速前瞻控制算法,根據(jù)加工路徑的型值點(diǎn)的實(shí)際情況,確定每一型值點(diǎn)處的最大銜接速度,采用S型曲線加減速控制,實(shí)現(xiàn)各路徑段之間進(jìn)給速度的快速銜接,從而達(dá)到高速高精的運(yùn)動(dòng)控制目的。
Quantitative prediction of landslide using S-curve;
能夠反映滑坡如此運(yùn)動(dòng)過(guò)程的典型數(shù)學(xué)函數(shù)是Pearl曲線,本質(zhì)上此S型曲線與系統(tǒng)有阻尼的自由振動(dòng)微分方程是一致的,也與生物群體演化的蟲口方程一致,它們都共同反映了物質(zhì)運(yùn)動(dòng)的一般規(guī)律,因此可以用來(lái)預(yù)測(cè)滑坡運(yùn)動(dòng)過(guò)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.
根據(jù)S型曲線在超高過(guò)渡計(jì)算時(shí)遇到的具體情況進(jìn)行分析,提出了對(duì)"S型曲線"在兩反向回旋線銜接處進(jìn)行用斜脊式路拱設(shè)計(jì)的改進(jìn)方法。
The article show the method of design and calculation of S type curve in two familiar sight in high grade road design.
本文闡述了高等級(jí)公路線形設(shè)計(jì)中 ,在兩種常見情形下 ,應(yīng)用“曲線法”進(jìn)行 S型曲線的設(shè)計(jì)與計(jì)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.
根據(jù)S形曲線超高過(guò)渡的特點(diǎn)、類型確定超高過(guò)渡段中的特征斷面,提出S形曲線超高過(guò)渡分段處理的思路,并給出S型曲線超高過(guò)渡段上任意樁號(hào)處、橫斷面上任意點(diǎn)超高值的簡(jiǎn)單計(jì)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.
運(yùn)用熵理論和自催化原理對(duì)系統(tǒng)發(fā)展過(guò)程中普遍存在的 S型曲線的成因進(jìn)行了論述和證明 ,指出系統(tǒng)出現(xiàn) S型發(fā)展曲線是由系統(tǒng)的自催化機(jī)制和系統(tǒng)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.
結(jié)果表明:灰椋鳥雛鳥生長(zhǎng)發(fā)育分為三個(gè)時(shí)期,雛鳥生長(zhǎng)呈現(xiàn)“S”型曲線。