The soil reclamation has different effect upon soil unit weight and water 土壤開墾對土壤容重和水分狀況也有不同程度的擾動作用。
Also , considering the disturbance action of solid grain to boundary layer , disturbance factor is cited 又考慮到固體顆粒對邊界層的擾動作用,引入了擾動因子。
The optimal control problem is considered for bilinear systems affected by external persistent disturbances 摘要研究具有外界持續(xù)擾動作用下雙線性系統(tǒng)的最優(yōu)控制問題。
By using the approach , the original optimal control problem of bilinear systems with disturbances is transformed into a sequence of nonhomogeneous linear two - point boundary value ( tpbv ) problems 利用該算法可將在擾動作用下雙線性系統(tǒng)的最優(yōu)控制問題轉(zhuǎn)化為求解一組線性非齊次兩點(diǎn)邊值序列問題。
Air flow under strong wind condition in autumn - winter season is seriously perturbed by topography . the perturbation displays as a horizontal vortex covering whole city of beijing and part of mountain area in northwest 秋冬季大風(fēng)天氣的流動受地形的動力擾動作用明顯,擾動表現(xiàn)為水平渦旋形態(tài),其影響范圍包括北京城區(qū)及西北部山地。
The analytical solution indicate that , the disturbance has a important influence on the behavior of structured soft clay , and , with the increasing of disturbance degree , and strain is added , but the dissipation of pore pressure is decelerated 計(jì)算分析表明,擾動作用對結(jié)構(gòu)性土的固結(jié)性狀有顯著影響:擾動度越大,變形越大,孔隙水壓力消散越緩慢。
When the psb amplitude is weak , a series of hair - pin vortex will be formed . the formation , diffusion , breakup of the front edge of hair - pin vortex and the break of the head of hair - pin vortex lead to the first instability and form the slug structure 在一定幅值的psb弱擾動作用下,圓管流動中出現(xiàn)一系列發(fā)卡渦,發(fā)卡渦前緣處環(huán)形渦的形成、擴(kuò)散和破裂以及發(fā)卡渦頭部的破碎導(dǎo)致了流動的第一次失穩(wěn),產(chǎn)生塞流結(jié)構(gòu)。
Due to information ' s disturb effects on the enterprise decision and the business process , as well as the different influences of tod and toc , this paper suggests the use of mutual mode in the tod and toc can support enterprise decision accurately and effectively 基于信息在企業(yè)決策與業(yè)務(wù)流程中的擾動作用,以及決策論與約束論對企業(yè)決策的不同影響,提出采用決策論與約束論互動方式,有效、高速、準(zhǔn)確的支持企業(yè)決策。
The simulations show that the vsc strategy is robust against external disturbances and model perturbation as long as the control parameters are selected properly . in comparison with the pid controllers , the vsc also enables a satisfactory dynamic performance to be achieved in terms of variation in the depth of cut 結(jié)果表明,當(dāng)趨近律參數(shù)選擇合適時,采用變結(jié)構(gòu)控制的主軸系統(tǒng)在外擾動作用下具有良好性能,其動態(tài)穩(wěn)定性及對系統(tǒng)自身特性變化的適應(yīng)能力明顯強(qiáng)于pid控制器。
The problem of local parameter optimization in low synchronization bunch _ rank speed - control system has been researched in this paper . the paper analyzed the problems existing in trational double closed _ loop bunch _ rank speed - control system , and pointed out the influence on performance of system caused by nonlinear parameter with timing variety . added a local mit self _ adaptive controller to double _ closed loop bunch _ rank speed - control system . the results of computer imitating indicated that under same disturbance the performance of system has been improved obviously . 5figs . , 1tab . , 4refs 對低同步串級調(diào)速系統(tǒng)中局部參數(shù)最優(yōu)化問題進(jìn)行了分析研究.從理論上分析了傳統(tǒng)的雙閉環(huán)串級調(diào)速系統(tǒng)中存在的問題,指出了系統(tǒng)中非線性時變參數(shù)對系統(tǒng)性能的影響.在雙閉環(huán)串級調(diào)速系統(tǒng)中增加局部mit自適應(yīng)規(guī)則.計(jì)算機(jī)仿真結(jié)果表明:在相同的擾動作用下,系統(tǒng)的性能得到明顯改善.圖5 ,表1 ,參4