無擾動運動 的英文怎麼說
中文拼音 [wúrǎodòngyùndòng]
無擾動運動
英文
undisturbed motion- 無 : 無Ⅰ動詞(沒有) not have; there is not; be without Ⅱ名詞1 (沒有) nothing; nil 2 (姓氏) a surn...
- 擾 : Ⅰ動詞1 (擾亂; 攪擾) harass; trouble 2 (客套話 因受人款待而表示客氣) trespass on sb s hospital...
- 運 : Ⅰ動詞1 (物體位置不斷變化) move; revolve 2 (搬運; 運輸) carry; transport 3 (運用) use; wield...
- 擾動 : excitation; turbulent motion; turbulence; destabilization; [物理學] perturbation motion; [地質學]...
- 運動 : 運動[舊時用語] arrange things or get things done through pull
-
In undisturbed inertial motion, the angular momentum is constant.
在無擾動慣性運動中,角動量是恆定的。At linear stage, the theoretical growth rate for the rt instability in cylindrical and spherical geometries was enhanced ( or reduced ) due to the decrease ( or increase ) in the perturbation wavelength during an implosion ( or explosion ). even in the absence of an acceleration the perturbation could grow in the convergent geometries. the amplitude growth rate was proportional to the cube of the convergent ratio in spherical geometry and to the square of the convergent ratio in cylindrical geometry
在線性階段,已有的研究表明:一方面,在內爆(或外爆)過程中擾動波長變短(或變長) ,使得不穩定性的增長率變大(或變小) ;另一方面,即使不存在界面加速度,界面運動仍然可能導致擾動幅度的增加,柱幾何中擾動幅度的變化速率正比于界面收縮比的平方,球幾何中擾動幅度的變化速率正比于界面收縮比的三次方,並且擾動幅度的變化方式(增加或減少)只與初始時刻擾動幅度的增長速率(正或負)有關,而與界面的運動方向(向內或向外)無關。Russell ( [ 17 ] ) has showed that, a compact perturbation, generated from unitary operator groups in infinite - dimensional linear hilbert spaces, is unable to make the perturbed semigroup exponentially stable
Russell ( [ 17 ] )曾指出,無限維hilbert空間中的酉運算元群對生成的緊擾動不能使被擾動半群具有指數穩定性。In this paper, we discusse the stability of perturtation of m - p inverses of closed operator function and then the stability of least square solution of elliptic partial differential equations of second order with unbounded coefficients
本文討論了閉運算元的m - p廣義逆的擾動,並由此討論首項系數本質無界的二階散度型橢圓型微分方程的最小范數極小二乘解的穩定性So the sliding mode variable structure controller was discussed, which has strong robustness against the disturbance, and the chattering phenomenon inherited from vsc was taken advantage to regular valve vibration for the purpose of avoiding coagulation on it, while precision of level control can be almost unaffected. but for the reason of control limitation, especially the acceleration insufficiency, the continuous time quasi - sliding mode vsc for one class of controllable system, as the substitution of ideal sliding mode control system, which was impossible to implemented, was researched, including the three essentials, reaching condition in particular, and the chattering ex - pression was given. furthermore, the effect to quasi - sliding mode motion and chatter - ing expression by extent disturbance was also analyzed
由於控制量相對受限制,並且主要體現在控制量加速不足方面,無法實現理想的滑模變結構控制,因此本文研究了一類能控系統在這種情況下的連續系統準滑模變結構控制,包括變結構控制三要素,尤其是到達條件;並且針對塞棒掛渣問題,給出了該情況下抖振的表達式;魯棒性方面,分析了外界擾動對準滑模運動的影響,並且給出了外擾作用下抖振的表達式。We have successfully designed an experiment system for the no invasion blood pressure measurement with our own ip. in our research and develop task we have done a lot work to study foreign instrumen and design ideas. this experiment system is based on msp430 series mpu with excellent erformance and applies advanced digital signal process and intelligent technology. in hardware design, the following means were applied : after a lot of experment and fully knowing about the characteristic of the pulse wave signal, we have designed the accurate and credible circuit to collect the pulse wave signal ; power circuit, communicaion circuit, power drivers circuit have been disigned for the instrument. in software design, the following arithmetic were applied : 1
軟體方面進行了以下演算法研究: 1 .綜合試驗各種數字信號處理方法對波形進行平滑處理: 2 .採用lms自適應方法對脈搏波信號進行了降噪處理; 3 .應用微分閉值法提高了脈搏波信號的檢出率,有效識別了運動干擾引起的偽波信號; 4 .利用測振法基本原理並進行大量實驗的基礎上,提出了比較準確可行的收縮壓和舒張壓的識別演算法,使測振法在本無創血壓儀中得到了完整而充分的應用。The security of rfid technique is very high, and the environment adaptability is good. the influence of rain, snow, hail or dust on the rfid system is quit week, and it can operate in all weather. rfid system can wirelessly complete the automatic identification, tracking and management, therefore it has extensive application in the identification of high speed motional object
射頻識別技術具有極高的保密性,且其環境適應性強,受雨雪、冰雹、灰塵等影響小,可全天候工作,無線地、非接觸地完成自動識別、跟蹤與管理,抗干擾性強,因此被廣泛應用於對高速運動物體的識別中。When running in closed - loop system, the motor will be affect inevitably by load disturbance ? and disturbance due to variety of motor parameter, then the dynamic performance of closed - loop is affected
無刷直流電機閉環運行時,不可避免地要受到外部負載擾動和由於電機本身參數變化而產生的干擾。因此,電機閉環控制系統的動態性能就會受到影響。The result showed that sea encumber polypeptide have no obvious effect on body weight in mice, significantly prolong the time of loaded - swimming and rolling stick, strongly degrade the content of blood area nitrogen and increase the content of hepatic glycogen of post exercise mice, the study indicates that sea cucumber polypeptide has significant anti - fatigue effect
結果發現,海參肽對小鼠體重無顯著影響,能明顯延長小鼠的負重遊泳時間和轉棒時間,顯著降低運動后小鼠的血尿素氮含量,提高了肝糖原含量研究表明:海參肽具有明顯的擾疲勞功效。A mathematical model, computational method and some experimental results are presented for the hydrodynamic interacting forces and moments between two 3 - d bodies moving in an unbounded water domain. this work is stimulated by a study of the hydrodynamic interactions when a uuv approaching to a parent submarine
本論文給出了水下雙體運動流體動力干擾的數學模型、計算方法和試驗結果,目的在於研究水下無人平臺( uuv )接近母潛艇時的水動力干擾及其規律。Meanwhile, caused by the stochastic disturbances and measurement errors, monitoring model based on single measurement value of individual sampling time tends to lack credibility and stability, and can ' t reflect the overall phase - specific operation state
同時,由於各種隨機擾動的影響及測量誤差的存在,針對單一采樣時刻的過程測量值進行建模往往不能保證足夠的可靠性與穩定性,無法實時反映過程時段整體運行情況。Results obtained demonstrate that, due to the existence of zero - correlation - zone ( zcz ) of the go sequences, near ideal performance can still be achieved even when high speed radio environment is encountered. in addition, obvious interference mitigation as well as significant performance improvement can still be observed when the relative shifts of spreading sequences exceed zcz
研究表明,由於廣義正交序列零相關區( zcz )的存在,即使處于高速運動無線環境,仍然可以取得近似理想性能,即使序列偏移超出了零相關區,仍然對干擾有明顯的抑制作用,顯著提高系統性能。Finally, the motion stability of the flexible deployable truss mentioned before was analyzed. according to the definition of motion stability, the simulation results under the conditions of different initial attitude angle velocities and pulse torque function indicate that the deployment motion of flexible truss under these initial distortions was steady. the drive angle velocity of deployment
根據無擾運動的穩定性定義,通過對衛星在不同初始姿態角速度下及受到力矩脈沖作用下展開時衛星的姿態角速度的影響的比較,說明在這兩種初始擾動下桁架的展開運動的穩定性情況;對不同驅動角速度下桁架展開的模擬結果比較得到該桁架的失穩條件。The method of change partial differential equation into ordinary differential equation is classified, the bifurcation and chaos in nonlinear schrodinger system is detected and the effectiveness of controlling chaos of buckling beam with parametric perturbation method is studied in details. chapter 7 is the summary and conclusion of the dissertation
第六章總結歸納了將非線性偏微分方程轉化為常微分方程的變換法,研究了一維無界區域上非線性薛定諤方程的分岔和混沌性質,解析地研究了用參數周期擾動法控制屈曲梁的混沌運動的效果。During unit startup and load is lower than 15 %, drum level is controlled by feedwater control valve, feedwater pump remains at minimum safety speed ; when load is between 15 % and 25 %, feedwater control valve is closing at fixed speed determined by function module, main motor - operated - valve is opened automatically, control mode of drum level is transferred to feedwater pump automatically and bumplessly ; when load is between 25 % and 50 %, control valve is closed fully, and main motor - operated - valve is open fully, drum level is controlled by one pump ; when load is more than 50 %, first pump is kept in operation, second pump is putting into operation automatically and
在機組啟動、沖轉及機組並網至15 %負荷階段,給水泵維持在最低安全轉速下運行,汽包水位由低負荷給水調節閥自動控制; 15 %至25 %負荷階段,給水調節閥由函數模塊按照一定的速率自動平滑關閉,主給水電動門自動打開,汽包水位控制方式自動無擾切換為給水泵自動控制;負荷在25 %至50 %階段時,給水調節閥已完全關閉,主給水電動門已完全打開,水位控制已全由單臺給水泵承擔;負荷大於50 %后,在第一臺給水泵運行的同時,第二臺給水泵自動無擾投入。The simulation results show that the fcmac controller outperforms the classic pid controller in control accuracy as well as robusticity
模擬結果表明: fcmac控制器無論在運動控制精度還是魯棒性方面都較pd控制更優,同時抗擾動能力也達到了工程要求。Simulation result indicated that predictive filter of the dynamics model may be followed the attitude movement, if disturbance moment is time variable and large relative to gradient moment of gravity, and predictive filter based kinematics is suitable if there is no information about dynamics
在有較大時變干擾力矩情況下基於動力學模型的預測濾波演算法能夠很好地跟蹤姿態變化,而在對系統模型一無所知,系統動態不高的條件下利用基於運動學的預測濾波演算法可以得到較好的姿態估計。The unbounded perturbation of a hille - yosida operator and the wellposedness for a class of abstract boundary value problems
運算元的無界擾動與一類抽象邊值問題的適定性Future wireless communication systems trend to provide multi - services to mobile users. cdma technique is adopted by the 3rd generation mobile communication systems due to its flexibility in supporting multi - services. how to keep qos of heterogeneous services and utilize the scarce radio spectrum resources is challenging for 3rd generation mobile communication systems in this thesis we developed a radio resource allocation framework for wireless code division access ( cdma ) networks that support multi - class traffic with different data rates and bit error rate requirements. we proposed a new resource allocation scheme using joint adaptive power control and mmse multiuser receiver in multipath fading system
為移動用戶提供多種業務服務是未來無線通信網路的主要發展方向。由於cdma技術具有靈活支持多種業務的優點,因而被第三代移動通信系統所采納。如何在惡劣的無線傳播環境里以及用戶運動且相互干擾的情況下為為各類業務提供qos保證,同時充分利用珍貴的無線頻譜資源,是基於cdma技術的第三代蜂窩通信系統必須致力解決的問題。So it is fit for the moving or vibrating objects that may be hot or soft
由於非接觸的特點,對被測對象無任何干擾,因此非常適合熱的、軟的和運動的被測對象。分享友人