載波控制 的英文怎麼說
中文拼音 [zǎibōkòngzhì]
載波控制
英文
carrier control- 載 : 載Ⅰ名詞(年) year : 一年半載 six to twelve months; six months to a year; 三年五載 three to five ...
- 波 : Ⅰ名詞1 (波浪) wave 2 [物理學] (振動傳播的過程) wave 3 (意外變化) an unexpected turn of even...
- 控 : 動詞1 (告發;控告) accuse; charge 2 (控制) control; dominate 3 (使容器口兒朝下 讓裏面的液體慢...
- 制 : Ⅰ動詞1 (製造) make; manufacture 2 (擬訂; 規定) draw up; establish 3 (用強力約束; 限定; 管束...
- 載波 : signal carrier; carrier wave; carrier: 3路載波 three channel carrier載波傳輸 carrier transmission...
- 控制 : control; dominate; regulate; govern; manage; check; cybernate; manipulate; encraty; rule; rein; c...
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In order to eliminate the influence of the output filter capacitor current on the grid current, a novel control strategy for the grid - connected inverter in grid - tied and off - grid modes is proposed. the control strategy can also realize seamless transfer between grid - tied and off - gird modes. the grid - connected inverter can supply power to the critical load when the grid is off
本文針對傳統並網控制策略進網電流受輸出濾波電容電流影響的問題,提出了一種新的並網控制策略,該控制策略能基本消除輸出濾波電容對進網電流的影響,實現獨立與並網兩模式之間的無縫切換,對關鍵負載起不間斷供電的作用。The key technique include nip signal ' s generation, serial port 422 communication, control system data acquisition and processing, stationary wave ratio of antenna, sending and receiving signal ' s attenuation of antenna and so on
其關鍵技術包括nip信號產生, rs - 422串口通信,控制系統各模塊數據採集和處理,機載天線駐波比及收發信號衰減測量等。The smart rotor with active trailing edge is a new system for reducing the vibration which can adjust the air load of the blade to actively counteract the main harmonic of the force to the fuselage by controlling the deflection of the trailing edge
主動后緣附翼控制是一種較新的旋翼減振系統,它通過控制后緣附翼的偏轉,調節槳葉的氣動載荷,實現對機體激振力主要諧波分量的主動抵消。Electricity metering - data exchange for meter reading, tarif and load control - part 31 : use of local area networks on twisted pair with carrier signalling
電量計.抄表電費和負荷控制的數據交換.第31部分:帶有載波信號傳輸的雙絞線局域網的使用Electricity metering - data exchange for meter reading, tariff and load control - part 31 : use of local area networks on twisted pair with carrier signalling
電度表.計數器讀數稅控制和負載控制的數據交換.第31部分:帶有載波信令的雙扭線局域網的使用1 m 0. 5, the phase - shifted angle 6 is controlled in term of sine law which makes the magnitude of resonant voltage track a reference sine voltage, and the resonant voltage is rectified, filtered, inverted and then the better sine - voltage output is obtained, theoretical analysis and experimental results show that for the resistive load and inductive load, the switches of leading leg of the phase - shift - controlled circuit are always turned on at zvs, and ones of lagging leg are turned on at zvs ( < 0 ) or turned off at zcs ( ( > 0 ), moreover, all switches in the low - frequency inverter are always turned on and off at zvs, the measured circuit efficiency for rated load reaches up to 88 %
從功率單向流動角度出發,提出了一種lcc諧振型恆頻移相單相高頻鏈逆變電路拓撲,在調制系數0 . 1 m 0 . 5情況下,控制移相角按正弦規律變化,使諧振電壓脈沖列的幅值追蹤參考正弦電壓信號,經過整流、濾波、低頻逆變,從而獲得正弦度較好的輸出電壓。理論分析和實驗結果證明對于阻性負載或阻感性負載,移相全橋具有超前橋臂零電壓開通,滯后橋臂或者零電壓開通( _ 0 )或者零電流關斷( _ 0 )的軟開關特性,而低頻逆變器的各個開關均實現零電壓條件下的開通與關斷。The harmonic circulating current balancing is an important factor in the parallel operating control for it makes the units of the system to get. an equal power factor and makes foundation for the system to work stable and reliable
並聯電源系統的諧波環流均分控制是實現負載的失真功率均分,保證各並聯單元的輸出功率因數均衡,保證並聯系統穩定可靠工作的一個重要方面。Carrier intelligent control system of rotary vane coal feeder
葉輪給煤機載波智能控制系統In addition to the conventional techniques such as low sidelobe antennas and displaced phased center antenna ( dpca ), there has been great interest in space - time adaptive processing ( stap ) because it can suppress clutter effectively and improve the detection performance of airborne phased array radar evidently
除了採用低副瓣天線、偏置天線相位中心( dpca )等傳統雜波抑制技術,能夠有效提高機載相控陣雷達地雜波抑制能力和動目標檢測性能的空時二維自適應處理( stap )受到了廣泛關注。The leec biochip can be connected with pcb ( printed circuit board ), thus it can generate a moving electric field by changing time, scope and field intensity discretionarily under single chip processor ' s control. meanwhile it is probable to reduce driving voltage and decrease temperature greatly, and so increase resolution of dna separation
研究內容包括線性分散式電極陣列的理論設計,以普通載波片和有機高聚物pdms ( polydimethylsiloxane )為基本材料的晶元製作工藝, leec晶元和pcb板的連接方式,硬體控制系統的設計以及控制晶元工作的單片機程序編制等,此外還包括電化學檢測方法的研究。Skj ( jjw ) series of ac purifying regulated power supply, incorporating functions of regulation and auti - inter ference, designed and muters, xerox, video equipments, medical instrmments and other electr onicinstrmmerts and autocontrol systems for is wide vange of regulating, high precicion, quickacting, high effciency, small itcan restrain restrain sharp voltageand protect from moise of electric power net
系列進精密凈化電源是當今國際上普遍採用的現代電源調節技術,配以大容量濾波器與集成化控制系統構成;它具有如下特點:可靠性好、效率高、優良的動(瞬)態,體積小、重量輕、噪音低、負載適應能力強;適用於對電源要求較高的儀器或設備。This waveform library not only contains those typical radar signals like single - carrier frequency signal, encoded signal, lfm etc, but also include many hybrid modulated signals, like fsk / psk signal, fsk / ppm signal, psk / ppm signal, pseudo - random fsk / psk signal, etc. we use visual c + + 6. 0 to implement this software program, this makes it easy in control operation and provides a nice human - machine interactive interface
波形庫中既包含了傳統的雷達波形,如單載頻脈沖信號、 lfm 、編碼信號等,又包括了復合調制波形,如fsk / psk信號、 fsk / ppm信號、 psk / ppm信號、偽隨機fsk / psk信號等。採用vc編程實現,使其具有友好的人機界面和靈活的控制操作。The potential applications of amr include both civil and military communication, especially non - cooperative communications and communication confrontation, such as identifying signals, supervising signals, distinguishing interference, electronic confrontation, analyzing military threat, etc. on the basis of our analysis to the existing research on feature abstraction, the related feature abstraction methods are optimized in this paper, resulting several effective methods such as the feature abstraction based on transformation domain, stepped voltage level analysis, normalized carrier - free spectral energy analysis, squared signal and fourth powered signal analysis, etc. both the decision theory based on recognition algorithms and the artificial neural network ( ann ) based on recognition algorithms is analyzed, and the former is selected as it is more appropriate for this research
調制類型的自動識別廣泛應用於民用通信與軍用通信,尤其是對于非合作性通信、通信對抗,比如:信號確認、信號監控、干擾辨識、電子對抗、軟體無線電、電子救援、通信對抗、軍事威脅分析等。本論文在分析現有研究的基礎上,借鑒了已有的特徵提取方法,對相關調制類型特徵提取方法進行了優化,使用了一些有效的方法,如基於變換域特徵提取方法、梯層電平分析方法、剔除載波后的歸一化頻域能量分析方法、信號平方后的頻譜分析方法、信號四次方后的頻譜分析方法等。通過對基於決策理論和基於人工神經網路兩種識別演算法進行分析,本論文選擇了較適合的基於決策理論的識別演算法。The ground moving target detection ( gmti / gmtd ) is an important function of the battlefield awareness radar and fighter ' s fire - control radar. in the gmti / gmtd the ground clutter will do strong harm to the detection and stap can be used to suppress the clutter
戰場感知雷達和機載火控雷達的地面慢速目標檢測功能也受到地雜波的制約,可以利用空時二維自適應處理提高抑制雜波的能力。An intelligent home control design based on power line carrier communication
基於電力線載波的智能家居控制技術This paper mainly focuses on the noise limiting by means of the direct sequence spread spectrum ( dsss ) and the analysis of the transmission performance of the plc and some digital modulation technology. the contents of the paper is as follows : 1 ) the technical feasibility is proved after simulating noise limiting principle of dsss by means of systemview, the simulation software ; 2 ) a kind of band pass filter ( bpf ) is realized according to the requirement of filter and the principle of butterworth approximation, which satisfies the index of performance of dsss. 3 ) the low voltage plc system includes the sc1128, the specific modulation / demodulation ic, the bpf filter and other circuit components, furthermore, the control function of system is realized by means of the personal computer and the microcontroller
本課題在對低壓電力線的傳輸特性和數字調制技術進行分析的基礎上,將通信理論中的直接序列擴頻技術( dsss )用於解決低壓電力線通信的干擾問題,主要研究內容如下: ( 1 )用通信模擬軟體systemview對dsss技術的通信和抗干擾原理進行模擬分析,分別對時域和頻域下採用dsss技術前後接收信號的頻譜進行分析,驗證dsss技術在本系統中的可行性; ( 2 )由dsss技術對濾波系統的要求,根據濾波理論分析了巴特沃思型濾波器的逼近原理並設計了合適的濾波電路; ( 3 )用調制解調晶元sc1128和自行設計的濾波器加之輔助外圍電路,構造出低壓電力線載波通信系統,並採用atmel公司的單片機設計了接收和發射電路的微控制器; ( 4 )分別對採取抗干擾措施前後輸入和輸出信號進行對比實驗,並對結果進行分析,驗證了dsss技術對干擾信號的抑制作用。Pwm converter has low efficiency at light loads and high amplitude harmonic. on the other hand, the control circuit and filter for pfm are much complex
Pwm調制模式的spic在輕載下效率較低,控制脈沖諧波峰值較大; pfm控制電路較為復雜,后續濾波器設計困難。In airborne synthetic aperture radar ( sar ), antenna stabilization platform is used to isolate antenna pointing, which is stabilized through controlling the platform axis ' rotation, from the vehicle ' s varying attitude and dynamical vibration
摘要機載合成孔徑雷達中,天線穩定平臺用於隔離載機的姿態變化和機械振動對天線指向的影響,並通過伺服系統控制平臺支承軸的轉動穩定波束指向。Controlled carrier modulation
可控載波調制The thesis tries to solve the problems in two ways : carrier wave modulation control methods and deadbeat control methods as well as some theoretic problems discussed
本文從載波調制控制和無差拍控制兩個方面進行了嘗試,並對一些理論問題進行了一些探討。分享友人