等轉矩法 的英文怎麼說
中文拼音 [děngzhuǎnjǔfǎ]
等轉矩法
英文
torque identity method-
Aiming at permanent brushless dc motor in mini - bev ( battery electric vehicle ) with torque ripple and violent noise during low speed running, the fuzzy control method is combined with slide mode control method to suppress the influence due to un - modeling parameters, and to ensure the robustness in the process of reaching slide mode plane
摘要針對微型電動車用永磁無別電動機轉矩脈動大、低速運行時噪聲明顯等主要問題,採用模糊控制和滑模控制相結合的方法,克服了未建模參數的影響,保證了滑模到達階段的魯棒性,同時抑制了轉矩脈動。In this dissertation, through computer simulation, the problems of modeling, control and guidance of auvs are presented. the first part of this dissertation addresses the problem of dynamically modeling of auvs, and derives thrusters " two - dimension nonlinear dynamic model, which has axial flow speed and propeller rotational velocity as two state variables, voltage or current of motor as inputs, and thruster force and torque as output. the second part focuses on the nonlinear adaptive sliding mode control of auvs in diving plane and steering plane
本論文系統研究了自主式水下航行器的建模、非線性自適應滑模控制、以及深度調整和水平面導引方法等問題,具體成果和創新點如下1 、根據流體力學理論,建立了螺旋槳推進器的動態模型,它以螺旋槳來流速度v _ p和螺旋槳轉速n為狀態變量,以電機施加轉矩為輸入,螺旋槳推力t和轉矩q為輸出。This paper presents our research in actuating in - vivo micro - robot based on the capsule endoscope platform by the external power. while seeking secure driving method we take several factors into account, such as driving environment, power transmitting and consuming, motion requirement and controllability, and locating technique. we mainly deal with driving the capsule with spatial gradient magnetic field, so we employ combined electro - magnetic coils, including gradient coils and homogenous coils, which have rotational dof around a translatable patient bed, to compose a controllable uniform gradient which act on the permanent - magnet embedded robot, thereby get an appropriate spatial force and torque to fulfill the anticipant locomotion such as move, stop, pitch and yaw
基於驅動環境、能量供給和消耗、驅動動作要求及驅動安全性與可控性,定位方案等多方面考慮,尋求安全可靠的腸胃檢查微機器人的外部驅動控制方法,並著重研究直接利用外磁場磁力驅動微機器人:在微機器人內部嵌入永磁性體,利用體外的組合電磁線圈產生加載電流控制的驅動磁場,其中外部的電磁線圈由多組梯度線圈和勻場線圈組合構成,通過繞病床的旋轉以及病床的平移共同控制微機器人所在位置的磁場強度及梯度,作用於微機器人內嵌磁體以獲得空間意義上的必要驅動力和調整轉矩,從而有效地完成驅動動作要求。By constructing the geometrical model of a certain underground single arm type pantograph and applying the translation of pantograph - head balancing bar and the perpendicular displacement of pantograph in the direction of the movement of locomotive while raising pantograph as the objective which must satisfy the demands of locomotive ' s stable current collection, this paper applied the multi - objective optimization based on the genetic algorithms to design the pantograph mechanism
摘要在建立某地鐵單臂受電弓簡化幾何模型的基礎上,根據列車平穩受流對受電弓提出的各項要求,以受電弓升弓時機車前進方向上的縱向偏移量和弓頭平衡桿的平動為目標,以受電弓正常升弓所需升弓轉矩等為約束,運用基於遺傳演算法的多目標優化技術,對該型受電弓機構進行了優化,得到了使受電弓運動性能達到最優的幾何參數。For the bldcm which has a pseudo - sinusoidal back - emf waveform, this dissertation presents a svpwm control method using six discrete position signals for minimizing the torque ripple. the main aspects for the implementation of this method are analyzed, including the initial orientation of the voltage vector, reasonable choice of the impedance angle and the advance commutation angle, and estimation of the successive rotor positions
針對反電動勢類似正弦的準正弦波反電動勢無刷直流電動機,本文提出一種基於六個離散位置信號的自同步svpwm (電壓空間矢量法)控制方法,用以削弱電磁轉矩脈動,分析了實現這種方法的主要控制環節,包括起動時電壓空間矢量的初始定位,阻抗角與電流超前角的合理選擇以及連續轉子位置的估計等。Furthermore, this dissertation also gives a comprehensive analysis and comparison to the torque ripple factor, torque - current ratio and other aspects for pseudo - sinusoidal emf bldcm drived by 120 conduction mode, 180 conduction mode and self - synchronous svpwm mode respectively. the simulation and the experimental results indicate that self - synchronous svpwm method is more effective for minimizing the torque ripple without any expense of the torque - current ratio when the crest width of the back - emf waveform is less than 107 electrical angles
對準正弦波反電動勢無刷直流電動機在120導通方式、 180導通方式和自同步svpwm三種控制方式下的轉矩脈動系數、轉矩電流比等方面進行了全面的分析與比較,模擬研究和實驗結果表明,當反電動勢的平頂寬度小於107電角時,採用自同步svpwm控制方法可以在不損失轉矩電流比的基礎上,更有效地抑制電磁轉矩脈動。Linear induction motor is an important kind of machines which have some merits such as simple structure, low cost, durability, convenience for maintenance etc. the subject of this thesis is to study a big circular ring linear induction motor, and the major works in this thesis are summarized as follows : ( 1 ) considering the effects of the finite length of primary core, one - dimension analytical solution for the air gap field is cited in this paper. based on it, the single layer winding magnetic field is studied. considering whole - pitched and short - pitched winding configuration with odd poles and half - fulled slots in both ends, the double - layer winding magnetic field is analyzed, respectively
本文對大圓環直線感應電機進行了深入細致研究,內容包括: ( 1 )本文採用有限長行波面電流作用於有限長鐵芯上的模型,引用了氣隙磁場一維解,研究了單層繞組磁場,奇數極半填槽雙層繞組在採用整距和短距時磁場的分析、比較,簡單介紹了二維解; ( 2 )用有限元軟體ansoft對大圓環直線感應電機空載氣隙磁場進行了靜態分析,並分析了結果; ( 3 )用軟體進行了額定電壓下的瞬態分析,得到了轉矩,位移,轉速隨時間變化曲線圖,利用單極性霍爾元件測定轉速並與軟體計算結果進行了比較,採用等效電路法計算了堵轉時的最大電磁力並做實驗進行了驗證,由實驗測得了三相電流波形,並與計算結果進行了比較,對其不對稱性進行了定性分析。Secondly, the math model of the high - speed pm generator with a shielding is deduced. the method of how to analyze the electromagnetic field of the generator is introduced. and with the help of a kind of fem software, the parameters of a model machine are calculated and simulated, including the electromagnetic field, no - load voltage, single - side magnetic force, loaded torque and axial force
其次,對轉子帶防護罩的高速永磁發電機數學模型進行了推導,介紹了利用有限元法對電機磁場進行分析的方法,並運用有限元軟體對一臺樣機的參數進行了模擬,包括電機磁場分析、空載電壓波形、單邊磁拉力、負載轉矩以及軸向力等方面的內容。In the simulation work, one 1. 5kw and one 18kw induction motors ? control system were simulated and two simplified control scheme were proposed. when developing the program in tms320f240 dsp, this paper solved two practical problems : the finite - length effect and dc bias effect. finally, sensorless control system based on adaptive filter theory are tested on the platform of 1. 5kw induction motor, the results show that the scheme ? performance is good
在模擬過程中,針對1 . 5kw和18kw異步電機進行了模擬,並在此基礎上提出兩種簡化控制方式;在tms320f240的具體編程過程中,分別對自適應濾波器的有限字長效應、直流偏置效應等非理想因素進行了修正和補償;最後,在1 . 5kw微型異步電機上進行了轉矩閉環無速度傳感器實驗,實驗結果表明了演算法完全可以達到預期的目標。In direct torque control system, speed sensors are usually used to survey the speed of motor, but speed sensors have many disadvantages, such as inconvenient fixing and maintenance, inaccurate precision. at present it is an efficient and feasible method to estimate speed by using software instead of hardware
以往在直接轉矩控制系統中採用速度傳感器檢測速度信號,由於測速裝置具有安裝不便、維修困難、測量精度差等缺點,因而採用軟體代替硬體檢測設備辨識速度,即進行無速度傳感器的設計,不失為一種有效可行的速度辨識方法。The basic working principles and characteristics of srm will be described firstly in this paper, as well as its developing survey and researching directions. and then the srd system will be separated into several function parts to be introduced respectively in details : ( 1 ) to analyze the basic characteristics of the srm including electromagnetism, current and torque of every angle field of the rotor based on the subsection - linearized inductance characteristics of stator windings and several idealized supposes. ( 2 ) how to design and realize the h - bridge converter, and the method to use it ; ( 3 ) how to design and realize the controller based on dsp ( tms320f240 ) and the control strategies, as well as the program ; ( 4 ) to introduce the monitor program running in a pc, which is programmed by delphi
本文首先介紹了srm的基本工作原理和特點以及srd系統發展概況和研究方向,然後以srd的功能構成為線索分部分進行介紹: ( 1 ) srm的特性及控制策略分析,在電感分段線性化等簡化條件下分析得出了各個轉子位置角度區間的電磁、電流和轉矩特性並分析了控制策略; ( 2 )分析設計了h橋式功率變換器的設計和工程實現的方法,並設計了基於這種功率變換器的換相邏輯; ( 3 )分析設計了以dsp為核心的控制器以及控制方法,並介紹了該控制器的軟硬體實現; ( 4 )介紹了如何用delphi編制實現上位機監控程序。The speed sensorless techniques for dtc system are very fascinating and challenging subjects recently, they are received wide attention in the literature. some brief description is provided. the proposed approaches are based on speed model of dtc, motor reference adaptive control, the instantaneous reactive power of motor and the extended kalman filter
無速度傳感器調速系統是直接轉矩控制研究領域內一個非常熱門的研究方向,本文介紹了無速度傳感技術的發展歷史及目前的研究狀況,分別利用直接轉矩控制的轉速模型方法,模型參考自適應方法、電機定子反電動勢以及擴展的卡爾曼濾波器等方法設計了無速度傳感器系統,對于其數學模型和系統構成作了比較詳細的推導。Specific issues examined are : compensation for the variation of the stator resistance, the offset error of the dc bus voltage, the voltage error generated by the forward voltage drop the dead time of the switches, improvement of the steady state performance, and the speed sensorless control for the pmsm dtc drive system are of major concern in this thesis
定子電阻變化,直流母線電壓漂移,開關器件反向相電壓降、逆變器死區時間引起的電壓誤差的補償,提高系統穩態運行性能以及永磁同步電機直接轉矩控制的無速度傳感器運行方案等問題都是本文研究的重點。轉矩的快速響應是直接轉矩控制演算法的一個卓越的性能。In real robotic manipulators there are many constraints such as max torque of motor, rotation angle of joint, difference in length of the working time span. these constraints are not in accordance with the assumption of iterative learning algorithm and so bring difficulties to the application of it
但是,機械手在現實工作中存在很多的限制,比如:電機最大轉矩的限制、關節轉角的限制、工作時間區間不等長等,這些不滿足迭代學習演算法標準前提假設的現實情況,給迭代學習演算法的應用帶來了一定的困難。Chapter four discussed the software design of control system in detail, including main program, closed loop program and interrupted subprogram, and study the program of the torque control soft - start emphatically
第四章中,詳細介紹了控制系統的軟體設計,包括主程序,閉環計算程序和中斷服務子程序等的設計與流程,並著重介紹了轉矩起動軟體實現方法。The exact design methods of switched - current filters are summarized, such as the director synthesis of z - plane, euler mapping, state variable analysis, matrix decomposition, and signal - flow - graph simulation of the lc and switched capacitor prototypes. at the same time, a modified left decomposition matrix method is proposed to overcome the usual problems of large silicon area, high sensitivity and component spreads by minimizing the input circuits. examples of switched - current low - pass, high - pass and band - pass filters are given to verify the feasibility of these methods
總結分析了實現高精度開關電流濾波器設計的各種實用方法,包括z域綜合法、歐拉映射法、模擬無源lc網路和開關電容網路的狀態變量法、矩陣分解法和信號流圖轉置法,並對左分解法加以整理改進,提出一種更為簡潔的設計結構,通過減化輸入電路克服一般電路中存在的佔用矽片面積大、靈敏度高等問題。According to the relationship of the angle of the maximum torque and the q axis, the reluctance torque for salient pmsm is made full use of and the sator current amplitude is reduced by a large percentage, so that the system robustness is greatly increased. at the speed loop, this paper presents a single value model algorithmic control strategy which is the simplied form of normal model algorithmic control and has less computation work than the latter, so the real - time performance is very good
對于嵌入式pmsm ,根據在電流幅值一定的條件下最大輸出轉矩與(為等效電流矢量和q軸之間的相位角)之間的關系,將磁阻轉矩轉換為輸出轉矩從而提高了輸出轉矩,改善了系統的控制性能;在速度環採用單步模型演算法控制,其計算量比較少,提高了系統的實時性和魯棒性。Theoretical and experiment researches of transmission mechanism and control strategy of the cvt have been carried out under the project ( 59835160 ) financed by national natural science foundation which includes follow content : 1 ) the kinematic relation of the metal pushing v - belt type transmission is analyzed. the relation among oil pressure of pulley cylinder, transmission ratio and input torque under load condition is studied. optimal design method for metal pushing v - belt type continuously variable transmission is put forward
本文在國家自然科學基金重點項目(資助號: 59835160 )資助下,對金屬帶式無級變速傳動系統的傳動機理、匹配及控制策略等進行了系統深入的理論分析和實驗研究,具體研究內容如下: 1 )系統地分析了金屬帶無級變速傳動的基本運動規律,研究了在負載狀態下,帶輪油缸壓力與速比和輸入轉矩的關系,提出了對金屬帶式無級變速傳動系統進行優化設計的方法。Due to 12 / 8 poles doubly salient permanent magnet motor, planar finite element method ( fea ) is applied to analyze the magnetic field inside the motor. and a series of static characteristics are investigated, such as field distribution, air gap magnetic density, field flux, inductance, static torque
針對12 / 8極永磁式雙凸極電機,採用二維平面有限元法對電機內磁場進行分析計算,研究了電機磁場分佈、氣隙磁密、繞組磁鏈、繞組電感、靜態轉矩等一系列電機靜態特性。Second, the math model of the switched reluctance motor ( srm ) is established and its static performance is analyzed by two methods, which are the equivalent magnetic network method and the nonlinear magnetic parameter method ; the actual current and torque waveforms are given in the control of apc and ccc
其次,採用等效磁網路法和非線性磁參數法分別建立了開關磁阻電機的數學模型,對開關磁阻電機的穩態性能進行了分析,得出角度位置控制和斬波控制方式下的開關磁阻電機的電流波形及轉矩脈動波形,並對兩種方法進行了比較分析。分享友人