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exciter n.1.刺激者;刺激物。2.【電學】勵磁機;【無線電】激...

exciting

The steady state and transient characteristics of the aceg system are simulated , the harmonics of the emf and stator current and rotor current as well as mc ' s input current are researched . the operation characteristics of aceg with mc as an exciter are compared to those of aceg with ac - dc - ac converter and cycloconverter as an exciter . the results in this thesis will be helpful to the design of the aceg excitation control system 利用所建模型,對交流勵磁發電機系統的穩態調節特性、暫態特性進行了仿真研究;仿真研究了發電機定、轉子電流和感應電勢及變頻器輸入電流波形,并作了相應的諧波分析;與交-直-交變頻器和交-交變頻器作勵磁電源時發電機的運行特性進行了對比分析。

In the study of rotor system , sources of self - exciter vibration ( e . g . , asymmetric bearing stiffness and non - asymmetic clearance in labyrinth seals ) have been identified and extensively analyzed by investigators . however , the rotor dynamic forces due to clearance in turbines and compressors have received little attention 在對轉子系統的研究中,人們關注更多的是對系統中多種自激振動源(不對稱軸承剛度、迷宮密封中的非軸對稱間隙等)的分析、識別和研究,但對于渦輪機和壓縮機中由于非軸對稱間隙而導致的轉子動態力,人們卻很少關注。

This paper theoretically analyses the armature current and magnetomotive force in ac exciter of brushless synchronous machine with rotating rectifier . under the normal or fault conditions of rotating rectifier , the mathematical expressions of the armature current , the m . m . f and induced electromotive force are approached 本文通過對旋轉整流器在正常與故障狀態下的交流勵磁機電樞電流和電樞電勢作了初步的理論分析,推導出旋轉整流器在正常與故障狀態下電樞電流、空間諧波合成磁勢及其感應電勢的數學表達式。

The design of the controller is simple , because the effect of the exciter and the complex relation with system are included in the measurable disturbance . the harmfulness to the generator stability of water hammer effect is overcome by the gahc with the proper function 該方法將勵磁調節器的影響和與系統的耦合關系包含在可測擾動變量中,使得控制器的設計只與本地發電機及其調速系統的參數有關, gahc是一種設計簡單、安裝方便的分散控制器。

Abstract : the problem is given for the normal circuit of the double exci ter and the trubogenerator for heat giving . the circuit of the double exciter is discusse d and the new circuit of double exciters is given which can be used on the trubo genator for heat giving 文摘:提出相位復式勵磁裝置與供熱為主的汽輪發電機常規接線配裝存在的問題,從研究改進“相復勵”接線方式入手,以滿足供熱式汽輪發電機勵磁的需要,推薦使用改進的新型接線方式

According to this situation we decide to establish a power company to generate electricity and sell it . the main business of the company is to develop small hydroelectric power plant , and transform dc exciter generator that is put into use before 1980 針對這種情況,我們準備在四川樂山成立一家以電力生產為主的發電公司,主要經營小水電開發及八十年代以前投產發電的具有直流勵磁機的發電機組改造,可以獲得較高而且穩定的投資收益。

Firstly , the voltage sample signals from ac exciter stator coil were de - noised and filtered by means of decomposition of the wavelet function . secondly , the character frequency region of the rotating rectifier fault was selected clearly with wavelet package decomposition and reconstruction 先對交流勵磁機定子磁極線圈電壓采樣信號進行消噪濾波,再通過小波包分解和重構進行特征頻率提取,建立了表征旋轉整流器故障的特征向量。

Because the reality modes of structure mostly are vertical direction arch truss vibration , so model vibrations in outer plane are restricted in analysis . in experiment , the front three modes of vertical directions are achieved through vibration exciter in the structure 由于結構實際振型是以豎直方向的桁架振動為主,因此在分析時將模型平面外振動進行了約束,試驗中通過對結構進行激振,利用共振曲線測得結構豎直方向前三階振型。

The auxiliary modulating signals of the current controller at the rectifier and the extinction angle controller at the inverter , and the reference voltage of exciter are chosen to be control variables . then the all - state feedback linear optimal controller is designed 以直流系統整流側電流控制器的輔助調節信號、逆變側關斷角控制器的輔助調節信號以及勵磁系統參考電壓作為控制變量,設計了系統的全狀態反饋線性最優控制器。

Also have due to illness , the result of parasitism of bug enroach on , “ exciter “ disturbed the normal dissension of plant cell , and cause a cell cannot proper motion pilot breaks up , at this moment pathological changes also can appear tumor 也有因病、蟲侵害寄生的結果, “刺激物”擾亂了植物細胞的正常分裂,而造成細胞無法自行控制的分裂,這時病變也會出現腫瘤。

6 . a new method that adopt small exciter emulation to the dual - shaker vibration system and research the numerical electric current phase synchronous controller , thus 6 .提出采用小型激振器模擬并聯雙振動臺進行數字式電流相位同步控制器試驗研究的方法,從而降低同步控制器在研制階段的試驗成本,并且避免同步控制器的不確定性給振動臺造成損傷。

This paper deal with three - loop control system for synchronouns motor , stator current loop , var - current loop , exciter current loop . how to monitoring synchronizing error , and using 80196kc to control exciter 本文討論了三環控制的同步電動機勵磁系統,即定子電流環,無功電流環和勵磁電流環。以及同步電動機失步檢測及以80196kc進行控制的方法。

In the process , aiming at the rare bearing oscilation lift in 600mw magnetizing exciter , the several conclusions given by the expert system are examined , diagnosed and treated 對較為少見的600mw勵磁機軸承振動爬升故障,在長期工作經驗的基礎上,逐一排查“專家系統”判斷出的多種結論,成功地進行了分析診斷和處理,確保了設備的安全運行。

When a generator which has dc exciter use controllable thyristor to replace the dc exciter , we may use the space where the dc exciter was placed before to install a vice generator 所謂加裝同軸副發電機就是在拆除同軸勵磁機后的主軸空間裝特制的副發電機。目前這項技術已比較成熟,一些技術難題也已攻克。

Interferon is human body gets virus or double stranded the exciting generation immunity of rna exciter is respondent , by the cell synthesis reachs excretive gens protein kind 干擾素是人體受到病毒或雙股rna刺激物的刺激產生免疫應答,由細胞合成及分泌的一族蛋白質類。

The exciter system of traditional dc exciter has some weaknesses , whose commutators and carbon brushes often need examining , repairing and maintaining timely 對傳統直流勵磁機的勵磁系統而言,其帶有滑動接觸部分的換向器和炭刷等薄弱環節,需要定時檢修與維護。

Power system exciter was designed using the control theory of uncertain systems to enhance the stability and reliability of power systems in different operational states 為了提高電力系統在各種工況下的穩定性和可靠性,采用不確定性控制理論設計了勵磁控制器。

This screen makes use of a motor to drive directly with an eccentric block vibration exciter for easy adjustment of vibration force 該篩機采用電動機直接傳動,偏心塊激振器可方便調整激振力。該篩面具有特有的二次高頻振動使物料不易粘在篩網上。

The vibration is produced by an exciter with four shafts which have eccentric mass . it can transport large lump material in short and long distance 水平振動式輸送機是一種慣性振動輸送機,適用于對不規則塊狀物料進行長、短距離輸送。