variation n. 1.變化,變動(dòng)。 2.變量,變度,偏差。 3.【語言】語尾變化;變體,異體;【數(shù)學(xué)】變分,協(xié)變;順列;【生物學(xué)】變異,演變,變種;【音樂】變奏曲;【天文學(xué)】變差;(月的)二均差;【物理學(xué)】磁差。 a principle without variation 不變的方針[原則]。 be capable of variation 可能變化。 be liable to variation 容易變化。 These prices are subject to variation. 上列價(jià)格可能變更。 adj. -al
The method based on arx entity driving and the realization of parametric variation design 實(shí)體驅(qū)動(dòng)的方法及參數(shù)化變動(dòng)設(shè)計(jì)的實(shí)現(xiàn)
First analyze the affect of the parameters range of signal source 、 the error and the parametric variation on sorting result , finally constitute a model to produce the signal data and form the pdw 分析了信號(hào)源各參數(shù)的范圍、誤差、參數(shù)的變化、測(cè)量的精度以及對(duì)分選結(jié)果的影響。
A solution of linear nonhomogenous differential equations has been found out on the basis of using the idea of parametric variation and an integral of the linear homogenous differential equation ' s parameter solutions 摘要利用參數(shù)變動(dòng)法的思想,通過已知滿足初始條件的齊線性方程(組)含參量特解,給出了非齊線性方程(組)特解的一般積分表示。
What ’ s more , this paper takes the effect of crown wall rock and mid - board foundation reinforced parametric variation on tunnel structure stress and stability into account grounded on building typical section model of i wall - rock sector 另外,本文還通過建立類圍巖地段隧道典型斷面模型,分別考慮拱頂圍巖和中墻地基加固參數(shù)的變化對(duì)隧道結(jié)構(gòu)受力和穩(wěn)定性的影響。
Simulation shows that the control scheme is adaptive to parametric variations and external disturbances , and the stepping motor with the proposed controller not only has a high controlling accuracy , but also possesses the characteristic of fast response with no overshoot 仿真結(jié)果表明:所得閉環(huán)系統(tǒng)對(duì)電動(dòng)機(jī)運(yùn)行參數(shù)的變化和負(fù)載干擾有良好自適應(yīng)性,而且調(diào)節(jié)精度高,動(dòng)態(tài)響應(yīng)快,無超調(diào)。
Under different conditions , for example , with variable additional resists or system parameters , the system applies the variable structure controller to adjust the speed system with train . the results of simulation show the variable structure control can achieve a fast response , high stability under parametric variations and disturbances , with no overshoot . additionally , it has stability for the adjustment speed of atcs and provides the comfortable speed , for the travelers , and improves the system performance 采用變結(jié)構(gòu)理論分析在不同情況下,如附加阻力變化,系統(tǒng)參數(shù)變化等,仿真滑模變結(jié)構(gòu)控制器控制的列車自動(dòng)調(diào)速控制系統(tǒng),仿真結(jié)果表明,滑模變結(jié)構(gòu)控制的列車自動(dòng)調(diào)速控制系統(tǒng)能實(shí)現(xiàn)速度響應(yīng)快、無超調(diào),系統(tǒng)對(duì)參數(shù)的攝動(dòng)和外部干擾不敏感,實(shí)現(xiàn)列車自動(dòng)控制系統(tǒng)的速度調(diào)節(jié)的穩(wěn)定性,保證旅客的舒適,改善了系統(tǒng)性能。