variable-torque motor 中文意思是什麼
variable-torque motor
解釋
可變轉矩電動機-
The strategy of direct torque control is one of the variable frequency speed control scheme, which was developed in 1985 by prof. depenbrock and which was one of high performance control of induction motor drives after vector control
1985年德國學者depenbrock提出了異步電動機的直接轉矩控制（ directtorquecontrol ）變頻調速思想， dtc是繼矢量控制之後發展起來的一種高性能交流調速技術。 -
The study has completed the design of two - phase inverter and made up of the two - phase inverter - motor system for experimental use it is a variable frequency adjustable speed system with a open - loop control of rotational speed, which consists of voltage - controlled oscillator circulating assign device inverter circuit and two - phase induction motor a accurate mathematical model is set based on the whole system, and simulator program of dynamic and steady condition is established, which is used to calculate the dynamic and steady performance by kron and symmetrical coordinate converter by simulator calculation and experimental research with specific parameter of the system, a comparison is made between predicted and experimental characteristics, experimental measurements are shown to compare closely with corresponding theoretical result it is compared with some variable frequency adjus table speed system comprising inverter and single - phase induction motor from the system efficiency torque pulsation and the effect of two - phase inverter capacitance based on the conclusion, harmonic cancellation pulse width modulation control of a two - phase inverter - fed induction - motor drive system is researched, which cancelled the low harmonic and improve the system performance
通過對電機的kron變換和對稱分量變換，建立了系統較精確的數學模型，編制了系統動態及穩態運行的模擬計算程序分別計算系統的動態和穩態性能。通過對系統的具體參數進行了模擬運算和實驗研究，實驗和模擬結果進行比較，說明實驗和理論較為一致，並從系統效率、轉矩脈動及兩相逆變器電容的影響等方面與各種逆變器和單相異步電動機組成的變頻調速系統加以比較。在此基礎上，對兩相逆變器供電-異步電動機系統使用諧波抑制pwm控制進行了研究，由於減少了低次諧波，改善了系統性能。 -
The results of the experiment show this creative ac variable frequency speed - governing experiment system can realize the load relationship of direct electromagnetic torque between the motor group, get the continuous control process easily for the reaction load and potential energy load during four quadrant, achieve the total availability of the regenerate energy at any kind of load, and the system consumed power make up under 30 % of actual load power at any kind of load
該方案研究獲得的實驗結果表明：這種具有創新特色的交流變頻調速實驗系統可實現電動機組之間直接電磁轉矩方式的負載關系，可方便地獲得電動機在反應或位能負載特性下四象限運行的連續控制過程，並實現了任意負載方式下再生能量的全部回饋利用，任意負載下系統消耗功率僅占電動機實際負載功率的30 %以下。 -
A variable - speed dtc pmsm system is set up to verify the dtc theory in pmsm, that is to control the toque by controlling the torque angle of motor if the stator flux linkage keeps constant. this paper points out the function of the space voltage vector by which the torque angle can be changed according to the need of torque of the motor
主要作了以下開創性的工作：系統地闡述了永磁同步電機直接轉矩控制理論，發展了原有的控制理論，明確了空間電壓零矢量在控制系統中的重要作用? ?保持電機轉矩輸出，減小轉矩脈動，據此提出了包括零矢量的新型控制方法。 -
It is indicated that, when a two - speed motor is used for driving oil transfer pump, the motor with the characteristic of torque reduction on square rotary speed should be chosen ; the working economy of the variable speed pump is restricted by the characteristic curves of pipeline resistance, and its speed control range is restricted by the pipeline resistance characteristic curve, the pressure head needed by the system and the working characteristic of the pump ; when several pumps work in parallel, the pump with better performance should be changed into speed - variable pump
指出雙速電動機用於輸油泵的調速時，應選用轉矩按轉速平方降低特性的電動機；調速泵的運行經濟性受到管路阻力特性曲線的限制，其調速范圍受到管路阻力特性曲線、系統所需揚程和泵運行特性的限制；在母管制系統中把部分定速泵改為調速泵時，應將性能較高的定速泵改為調速泵。 -
Taking core loss into account has important effect to improve the torque performance of the motors " field oriented control. in this paper, the transient mathematical model of the asynchronous motor with core loss is setup. the method is proposed that minimizes the loss in a variable speed and torque at the synchronous rotating coordinate
在對損耗分析的基礎上，建立了考慮鐵損時異步電機的動態數學模型，推導出在同步旋轉坐標系下變速、變轉矩時使電機功率損耗最小的方法，並且結合矢量變換提出了基於快速轉子磁場定向的矢量控制。 -
But at present variable frequency control sets mainly the given frequency on the ground of the status of oil well, and makes the beam unit extract oil by the given frequency. consequently, the output feature of motor is still hard, and ca n ' t adjust the output torque of motor according to the load feature of beam unit
但是，目前抽油機變頻控制主要還是根據油井狀況來設定給定頻率，使抽油機電機按給定頻率來抽油，電機的輸出特性比較硬，而且還不能根據抽油機的負載特性來調節電機的輸出轉矩，有時還存在著發電狀態等問題。 -
Based on the torque - speed characteristic curve of induction motors, analyses were done on changes in slip with an variation in frequency when an induction motor drives different kinds of loads, including those with constant torque, constant - maximum torque, variable torque ( except fans and pumps ) and constant power, as well as fans and pumps, the formulas to calculate the slip and the speed under different frequencies and loads were presented
摘要以異步電動機機械特性曲線為基礎，分析了變頻調速異步電動機在拖動恆轉矩負載、恆最大轉矩負載、變轉矩（非風機和泵類）負載、恆功率負載以及風機和泵類負載時，轉差率隨頻率變化的規律。 -
Abstract in this paper the phase commutation and current curves of brushless motor variable - speed system are studied. according to the results that the pulsating torque is influenced greatly by the ratio of the direct current supply voltage and the electromotive force of the motor, an approach to reduce the pulsating torque is presented
本文通過對無換向器電動機模型的換相過程和電流波形的研究，得到換相轉矩波動受直流電源電壓和電動機電動勢幅值的比（ u / e ）的影響較大的結論並獲取了最佳u / e ，同時通過模擬研究了電流波形，提出了減小轉矩脈動的控制策略。 -
First in this paper, the control methods of electric actuators was studied and analyzed. the retangcle - wave permanent magnet brush - less motor is used for servo - motor, the reason of its torque ripple and the way to eliminating or suppession is analyzed and elaborated. in order to achieved wide - speed range, the method of variable structure control ( vss ) was used.,
論文分析了飛機電力作動系統的基本要求，選用方波直流無刷電機作為執行電機，採用重疊換向法、變結構控制策略和轉速、電流雙閉環pid控制方案，很好地解決了其固有的低速轉矩脈動現象，達到調速范圍寬、轉矩脈動小的設計要求。
分享友人