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connatural adj.1.生來的,固有的(to)。2.同性質的,同種[...

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Across the rigid - flexible coupling dynamic analysis , we acquired the coupled effects between the three - dimensional attitude motion of the satellite and the flexible vibration of the antenna ' s supporting beam , and got the dynamic behaviors of the system . and we found the change pattern of the antenna ' s structure parameters , which decide the system ' s connatural characteristic and its dynamic response 通過對衛星?天線形成的剛柔耦合系統進行動力學分析,獲得了衛星的剛體運動與天線的彈性振動之間的耦合影響規律及其真實的動力學行為,得到了天線結構參數對衛星?天線系統的固有特性及其動力學響應的影響規律,為衛星姿態控制和天線結構優化設計奠定了基礎。

The thesis is devoted to exploiting a permanent magnet synchronous machine ( pmsm ) for the parallel hybrid electric vehicle ( phev ) . three parts are included as follows : at first , in the electromotor state , the current control strategies of pmsm are determined . giving the elementary method for solving the contradiction between enhancing the pmsm ' s flux - weakening capability in the electromotor state and reducing the pmsm ' s connatural adjustment ratio in the dynamotor state 本課題的研究工作主要圍繞開發一臺并聯式混合動力電動汽車( phev )用永磁同步電機( pmsm )展開,所作的工作主要包括以下幾個部分:首先,確立了phev用pmsm電動機運行狀態時的電流控制策略,針對pmsm在電動機運行狀態時提高弱磁擴速能力和在發電機運行狀態時減小固有電壓調整率的相互矛盾,提出了初步的解決方法。

For increasing the effective material peak - value power ( empvp ) , solving the contradiction between enhancing the pmsm ' s flux - weakening capability in the electromotor state and reducing the pmsm ' s connatural adjustment ratio in the dynamotor state and improving the efficiency of the pmsm , some solving method are taken as follows : the influence of length / diameter ratio to the empvp is analyzed , and the optimum size of length and diameter is chosen 主要是從提高電機的有效材料峰值功率、解決pmsm提高電動機運行狀態時的弱磁擴速能力和減小發電機運行狀態時的電壓調整率之間的矛盾及提高電機的效率著手,分析了長徑比、氣隙長度對有效材料峰值功率的影響,并確定了它們的最佳尺寸。

We acquired the system ' s dynamic response when the satellite attitude was adjusted and the mode of the antenna . then modal analysis and dynamic analysis have been done to the satellite - antenna system by using the finite element analysis ( fea ) software of ansys . through the analysis we got the system ' s connatural characteristic , the amplitude - frequency characteristic of harmonic response , the power spectrum density of random vibration response , the maximal amplitude and resuming time of impact response 其次借助ansys有限元分析軟件,對系統進行了模態分析和動力學響應分析,獲得了不同天線結構參數下的衛星?天線系統的固有特性,簡諧響應的幅頻特性,隨機振動響應的功率譜密度,以及沖擊響應的最大幅值和恢復時間等。

If the numerical value line resonance frequency plus some shaft connatural frequency of generator is equal to operation frequency , it brings about coupling resonance between generator and system , which maybe results in shaft rupture of synchronous generators 當線路電氣諧振頻率與同步電機的軸系某一固有振蕩頻率近似互補于電網工頻時,將導致機電系統的耦合振蕩,嚴重的會造成同步發電機大軸的扭斷。

But with the coming of the communication age , the disadvantage of the traditional scm was discovered because of its connatural structure defect . its speed , scale and performance ca n ' t meet more and more requirements of the users 然而,隨著信息時代的到來,傳統單片機固有的結構缺陷,使其呈現出諸多弊端,其速度、規模、性能等指標越來越難以滿足用戶需求。

Comparing with other famous think factories and museums , its growth is in a stable and firm course although it is of connatural shortages accompanied with insufficiencies of postnatal supply 與國際著名科技館和其他博物館相比,它先天有些不足,后天也常缺乏營養,但是它成長的步伐卻是堅實而有力的。

Because of the connatural characteristics of virtual enterprise in product design and development process , quantity management theories , technique and method are faced with many new requests 由于虛擬企業產品設計和開發所固有的特點,必然會對質量管理理論、技術和方法提出新的要求。

For its connatural limitation , the synchronous precision is not high , its use is limited , so that the problem of high synchronous precision is not solved 由于同步閥固有的缺陷,其同步精度不高,使用范圍也受到限制,無法解決液壓同步系統中高精度控制問題。

The preponderance complementarity of the two modes will greatly improve human connatural function and develop medical high - tech 結論:兩種模式優勢互補,將使人體固有機能和人類生物醫學高科技都得到極致性的發揮。