perturbance n.＝perturbation.
n. ＝perturbation. “satellite perturbance motion“ 中文翻譯： 衛星攝動運動“perturbatio“ 中文翻譯： 攝動“perturb“ 中文翻譯： vt. 1.擾亂；攪亂；使混亂[慌張]；使不安。 2.【天文學】使攝動。 adj. -ative “perturbation“ 中文翻譯： n. 1.慌張，動搖；混亂。 2.狼狽，不安，焦慮。 3.引起不安[混亂]的事物；引起動搖的原因。 4.【天文學】攝動；【物理學】微擾。 adj. -al “perturabation“ 中文翻譯： 微擾擾動“perturbation action“ 中文翻譯： 擾動酌“perturabance“ 中文翻譯： 擾動，攝動“perturbation analysis“ 中文翻譯： 故障記錄分析; 擾動分析; 攝動分析“pertunmaa“ 中文翻譯： 佩爾頓馬“perturbation approximation“ 中文翻譯： 微擾近似“pertunkari“ 中文翻譯： 佩爾通卡里
perturbation |
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In the positioning servo - system , which generally is configured by the d . c . pulse width modulator ( pwm ) velocity governing system and position servo - loop , the parameter perturbance of pwm velocity loop really exist by reason of such as the load behavior ; power voltage supply ; operating setting value , etc . 1 , 2 ， and it cannot be ignored . by using the identification technique to form the mathematical model of the system , authors have confirmed the facts . therefore , to design the discrete sliding mode controller ( dsmc ) of the positioning servo - system , the perturbed parameters value bounds of the pwm velocity loop , which is as the controlled plant of position servo - loop , should be accounted . consequently , the design principle of dsmc for accounting system with parameter perturbance is proposed by the authors . the proposed method can ensure the stability of system with parameter perturbance and the behavior of non - overshoot , fast precise positioning . in order to reveal the effects of the design method , the comparative research work is done by the authors . also , it has been tested in an industrial experiment , the results proved it is satisfactory 由直流脈寬調速系統( pwm )和位置環構成的定位系統中，速度環的參數隨負載特性；電網電壓；給定工況而攝動是不容忽視的.作者通過系統辨識建模也證實了這一事實1 , 2 .因此在設計位置環的離散滑模控制時，必須針對速度環(即位置環的控制對象)的參數攝動范圍采用“對象參數攝動離散滑模控制器的設計方法” ，以確保系統在參數攝動時的穩定性和快速、無超調、準確定位的優良動態品質.為剖析該設計方法的控制效果，本文作了對比性研究，并將該設計方法用于工業試驗中，取得了滿意的結果 |
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In term of the probability of communication system and perturbance theory , the model of the effect of srs to error bit ratio in communication system is established . through the way numerical of simulation , limitations to srs to error bit ration of communication system and input optical power , the number of channel etc are discussed . the obtained conclusion has definitely reference value to the design of practical communication 根據數字通信系統幾率的特性和微擾理論，建立了受激喇曼散射對通信系統誤碼率影響的理論模型，并通過數值模擬討論了受激喇曼散射對系統誤碼率、最大輸入功率和信道數等的限制，獲得了一些對實際光通信系統設計有參考價值的結論。 |
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Finally , convergent geometry had an important effect on the perturbance coupling between the interfaces of the finite fluid . the attenuation factor of perturbance coupling from the outer interface in was greater than the one from the inner out 本文研究表明：收縮幾何效應對有限厚度流體的界面之間的擾動耦合有重要影響，柱和球幾何中擾動耦合從外界面到內界面的衰減因子大于從內界面到外界面的情況。 |
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The rotary vibration influence on the transmitted light intensity ' s perturbance of the glan taylor prism 泰勒棱鏡透射光強擾動影響的研究 |
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Satellite perturbance motion 衛星攝動運動 |