invariable line 中文意思是什麼

invariable line 解釋
不變線
  • invariable : adj. 無變化的；不變的；一律的。n. 【數學】不變量，常數。-bility, -ness n. 不變性。adv. -bly 不變地；永恆地；常常。
  • line : n 1 線；繩索；釣絲；測深度用繩，捲尺。 a fishing line 釣魚線。 be clever with rod and line 會釣魚...
  1. 4. adopt vector frequency converter motor for traction transmission, which can be controlled with invariable line speed

    4牽引傳動採用矢量變頻電機，實現恆定線速度控制。
  2. 3. the distance of metal wire and ground is smaller, the effective permeability leff, quality factor q and resonance frequency srf is also smaller ; the coil turns increases leff will increase, the q value and resonance frequency srf will drop ; the line width increases leff will drop, resonance frequency srf will increase and the q value is nearly invariable ; the via size, the pad layer size and thickness is little effect the effective permeability leff and resonance frequency srf but seriously influence q value

    3金屬導線離地的距離越小，有效電感值leff 、品質因子q 、自諧振頻率srf也越小;線圈圈數增加， leff增加， q值和自諧振頻率srf下降;線寬增加， leff下降自諧振頻率增大q值幾乎不變;通孔大小、覆蓋層的大小及厚度對有效電感值leff和自諧振頻率srf沒有多大影響，但對q值影響較大。
  3. The pmma ' s craze damage is observed on line in different temperature and invariable load, which show that the change pricks up with the increase of time and temperature. with the disposal of the image, we get a changing rule that the change of the sample of pmma ' s surface crazing damage density follow the change of time and stress. then the data from experiment is to match in non - linearity, pmma ' s density of crazing damage changing with time and stress is available

    對pmma在恆定荷載作用下，不同基溫下的pmma銀紋損傷進行了實時在線觀測，結果表明： pmma試件的銀紋隨持荷時間增加，而且隨著溫度的升高，可以加劇這種銀紋隨時間的變化；經圖像處理，得到了不同基溫下、不同應力水平下， pmma試件銀紋損傷面密度值；進而，對所得數據進行非線性擬合，得到pmma試件銀紋損傷密度隨時間演化規律，以及應力水平依賴性； 3
  4. Then a kind of fuzzy - smith control strategies for a large dead - time system is studied and improved. the simulation results show that the fuzzy - smith control method has some excellent performances, which is suitable for systems with deadtime - varying parameters. considering that the conventional fuzzy has a shortcoming of invariable fuzzy rules, an algorithm of adjustable fuzzy rules based on a single neural cell is proposed in this paper, which is used for modifying the fuzzy control query table on - line

    本文分析了模糊控制、神經網路和常規控制演算法存在的不足，研究了如何將各演算法的優勢互補，相互融合，形成復合的自適應智能控制演算法；針對大時滯系統的特點研究了fuzzy - smith控制演算法，並在前人基礎上做出了一定的改進研究，進一步提高了fuzzy - smith控制演算法的性能；又將常規pid與神經網路有機結合，研究了單神經元pid控制演算法：針對常規模糊控制不可調整模糊控制規則的局限，本文利用單神經元的自適應、自學習能力對模糊規則庫進行了間接在線自調整。
  5. Traditional protective relays have no or worse communication ability. their settings are gotten off - line and are invariable in operating. so they can not get the optimal protecting effect and can not satisfy selectivity, speediness and sensitivity of power system sometimes

    傳統繼電保護無通信能力或通信能力較差，均為孤立的保護，且其整定值均通過離線計算獲得，在運行中保持不變，無法使保護達到最佳保護效果，在靈敏性、選擇性與速動性方面甚至無法滿足電力系統對繼電保護的要求。
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