转环
- 与 转环 相关的网络例句 [注:此内容来源于网络,仅供参考]
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A method for carrying out transparent transmission service of elastic packet ring includes setting station table and interface table in RPR station of EPR, finalizing top ring retransmitting process based on MPLS countermark by matching MPLS countermark in service frame to station table to obtain MAC address of correlated EPR station according to topological retransmission table of station, finalizing bottom ring process based on MPLS countermark by matching MPLS countermark in service frame to interface table to obtain correlated local Ethernet interface number.
本发明公开了一种弹性分组环透传业务的方法及装置,方法包括:在每一个弹性分组环RPR站点中,建立一张具有MPLS标签与弹性分组环站点关联关系的站点表以及一张具有MPLS标签与本地以太网接口关联关系的接口表;通过将业务帧中的MPLS标签与所述站点表进行匹配获得关联的弹性分组环站点的MAC地址,并根据站点的拓扑转发表,完成基于MPLS标签的上环转发处理;通过将业务帧中的MPLS标签与所述接口表进行匹配获得关联的本地以太网接口号,完成基于MPLS标签的下环处理。
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ABSTRACT Aiming at problems of trans-vector controller in a vehicle-carried induction motor such as variable rotor and stator resistance following motor temperature, and their inductance varying with flux saturation degrees. Firstly, CSI and VSI are introduced, for CSI, it can hold the advantages both FOC and DTC using stator flux directional, PI parameter and simulation are also introduced. Secondly, equations of IM in the synchronous rotary frame and its static counterpart, as figuring in the saturation condition of magnetic field, are dealt in this paper and the simulation results are presented. Thereafter, the parameter designing of PI trans-vector controller is processed, which features the non-linear model. In practical realization, as neglecting the dynamical change of motor inductance, this paper employs online modification of inductance parameters, according to the flux saturation, then transforms the non-linear equations into linear ones, and so compacts the structure of controller. Thirdly, in view of the maximum torque output is extraordinary requisite when Electrical Vehicle start up, accelerate, and overtake, this paper issues the maximum torque when both inverter and battery capacity is corporeally definite. Fourthly, on-line differentiating and analyzing both rotor's time constants and its flux by using the expanding order reduction and discrete Kalman filter equation are fathomed, in order to realize high-performance trans-vector algorithm, and also the simulation results are presented. Fifthly, the close-loop regenerative brake system, when the EV's torque is set constant, is deduced; at the same time, unification of electric drive model and brake model is executed. Combined with maximum charge current demands, the mathematical model for online yielding torque as a demand.
本论文针对车载异步电机在矢量控制器所遇到的问题:定转子电阻随温度变化及随电机饱和程度变化的转子电感及定子电感而影响电机调速性能提出一套完整的解决方案:分析了电流型逆变器和电压型逆变器在实现矢量控制时控制器参数的计算,分析出对于电流型逆变器在采用定子磁场定向时,其性能同时具有矢量控制和直接转矩控制两者的优势,并对电压型逆变器在转子磁场定向下的模型进行了仿真研究;建立异步电机非线性模型,推导出考虑磁饱和时异步电机在同步旋转坐标系及静止坐标系下的方程,并做出了仿真结果,建立异步电机在非线性模型下的矢量控制调节器的PI参数设计,在实际应用中,若忽略电机电感的动态变化,可以根据当前的磁路饱和状态而在线修正电感参数,从而将非线性方程线性化,降低控制器的复杂度;考虑到电动汽车在起动和加速超车时需要电机有最大转矩输出,本文讨论在逆变器容量一定和电池供电能力有限的情况下电机最大转矩输出问题;推导了异步电机扩展降阶、离散卡尔曼滤波方程在线辨识转子时间常数和转子磁通,用于实现高性能的矢量控制算法,并给出了仿真结果;推导出了电动汽车恒转矩给定的闭环回馈制动系统,实现了电动控制模型和制动模型的统一,而且结合铅酸电池最大充电电流的要求,为制动转矩在线给定建立了数学模型;设计了基于双DSP系统的高性能矢量控制器软硬件框图,并以大量实验数据说明矢量控制在电动汽车应用的实际应用状况。
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The group disposed by Acetylspiramycin doesn"t show parallel results; The strip gray scale of exotoxin A decreased gradually with the increasing dosages of Azithromycin and Roxithromycin, which doesn"t show in group disposed by Acetylspiramycin and group PAO-JP2; The strip gray scale of lasR, detected by RT-PCR, decreased gradually with the increasing dosages of Azithromycin, which doesnt show in group PAO-JP2.Conclusions: There were obvious differences between PAO1 and PAO-JP2 in biology characteristics in vitro.
本研究发现大环内酯类药物在生物被膜培养过程中分别处理PAO1、PAO-JP2,结果提示大环内酯类药物(14、15元环)通过对QS系统的影响可有效抑制铜绿假单胞菌生物被膜的形成;通过QS系统有效抑制铜绿假单胞菌的毒力因子的产生,16元环的大环内酯类药物乙酰螺旋霉未见上述结论;lasR基因的反转录结果提示阿奇霉素可在转录水平抑制QS系统发挥其作用。
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The flux hysteresis controller was ignored in the constant torque region and an improved method was proposed to make the estimation of torque easier.The proper stator voltage space vector was selected based on the output of the torque hysteresis controller and the sector which the current rotor flux locates in.
摘 要:针对无刷直流电机直接转矩控制中磁链观测困难、控制复杂等问题,提出了一种应用于无刷直流电机二二导通方式下的新型直接转矩控制方法:在电机基频以下调速时,略去了常规的磁链观测控制环节,改进了转矩计算方法,通过转矩滞环控制选择所施加的空间电压矢量。
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A new brushless DC motor DTC scheme was studied to solve those problems associated with direct torque controlof brushless DC motor,such as difficulty to control flux and complexity to estimate torque.The flux hysteresis controller was ignored in the constant torque region and an improved method was proposed to make the estimation of torque easier.The proper stator voltage space vector was selected based on the output of the torque hysteresis controller and the sector which the current rotor flux locates in.
摘 要:针对无刷直流电机直接转矩控制中磁链观测困难、控制复杂等问题,提出了一种应用于无刷直流电机二二导通方式下的新型直接转矩控制方法:在电机基频以下调速时,略去了常规的磁链观测控制环节,改进了转矩计算方法,通过转矩滞环控制选择所施加的空间电压矢量。
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1,After transfected the mutated mtDNA of colorectal carcinoma,the mtDNA D-loop region of the transfected cells displays new mutation points.2,The external source pieces of the mutated mtDNA can integrate to nuclear genome after transfection.3,There's no differences in apoptosis between combinations after transfected the mutation of mtDNA in NIH3T3 and LST cells.4,The mutated mtDNA may affect the action mechanism of occurrence and development in colorectal carcinoma through affecting its mtDNA mutation or integrating exogenetic mtDNA to its nuclear which may cause the abnormal expression of oncogene or anti-oncogene.
(1)转染突变的大肠癌细胞mtDNA后转染细胞的mtDNA均可发生多处的突变位点。(2)通过转染后突变的外源性的mtDNA可以整合到核基因组内。(3)突变的mtDNA转染LST细胞及NIH3T3细胞后,不影响转染细胞的凋亡改变。(4)mtDNA的突变可能通过影响体细胞mtDNA的突变和通过外源性mtDNA在核内的整合从而影响癌基因或抑癌基因的表达异常,从而参与肿瘤的发生发展。线粒体DNA;D―环区;突变;质粒;pcDNA3.1;转染
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The DTC system with the rectifier using space vector modulation was studied.A novel input power factor closed-loop control method using hysterias controller was proposed in order to reduce torque ripple based on the analysis of torque ripple.
对整流环节采用空间矢量调制时的直接转矩控制系统进行了仿真研究,在分析转矩脉动的基础上给出了一种输入功率因数滞环比较的闭环控制方法。
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Demolition 1.1 The demolition of lifting mechanism 1.1.1 demolition handle pin, handle, fork rod pin, fork rod, valve pin, valve stem and stem nut locking pin; 1.2 regulate the demolition of ring 1.2.1 unloaded ring and nozzle ring adjustment screw, recording the number of alveolar nozzle ring nozzle ring used to turn to the right (anti-clockwise direction) until the stent in contact with the valve flap, recording the number of rotating shafts of the methods.
拆卸 1.1 提升机构的拆卸 1.1.1 拆手柄销、手柄、叉杆销、叉杆、阀销、阀杆锁紧销及阀杆螺母; 1.2 调节环的拆卸 1.2.1 卸下调节环和喷咀环的固定螺丝,记录喷咀环的齿槽数采用将喷咀环向右转(反时针方向直至与阀瓣支架相接触,记录所旋转的槽数的方法来实现。
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An auxiliary power motor with improved structure includes wheel shell, rotor ring, stator plate, central wheel axle and control circuit.
一种改良结构的辅助动力马达,包括轮壳、转子环、定子盘、中心轮轴及一控制电路,转子环的内环面埋设磁铁,定子盘周围固设环形矽钢片,其外环面具有多个T形齿牙,其齿数为非转子环磁铁数的公倍数,矽钢片设有三相星形线圈绕组,且于定子盘电机最佳启动角度处设有霍耳元件组;借此将定子盘固设于中心轮轴,令轮壳夹设住转子环并套设于中心轮轴两侧,当转子环旋转时,即可降低磁极间的钝齿转矩,令电动车行进更加顺畅无噪音。
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Because of the fact, the bearing capacity of the whole drive cannot be developed well enough. To improve the performances of the load-capacity, transmission efficiency, and reliability of mechanical drive, we originally developed some designs of the double crank ring-plate-type cycloid planetary drive. The new-type drive keeps all the natural advantages, which is of multi-tooth mesh, small mesh angle, and hardened tooth flank of gears. Moreover, The drive does not need the special output unit as the ring-plate-type drive does, so that the rigidity of the output shaft becomes much higher. Since the tumbler bearing is placed outside the cycloidal gear, the size of the bearing is no longer restricted to any extent.
为大幅度提高其承载能力、传动效率和可靠性诸指标,我们创新研究出来的多种结构双曲柄环板式针摆行星传动,其特点是不仅保留着原摆线针轮行星减速器同时啮合齿数多,总法向力与总圆周力间夹角小,摆线轮与针轮齿均为硬齿面等本质上的优点;而且又具有环板式传动省去输出机构且输出轴刚性好,转臂轴承移至行星轮外,从而传递的转矩可以成倍提高的优点。
- 推荐网络例句
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Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.
在对危险的南部地区访问时,他斥责什叶派民兵领导人对中央集权的挑衅行为。
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In fact,I've got him on the satellite mobile right now.
实际上 我们已接通卫星可视电话了
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The enrich the peopling of Deng Xiaoping of century great person thought, it is the main component in system of theory of Deng Xiaoping economy, it is a when our country economy builds basic task important facet.
世纪伟人邓小平的富民思想,是邓小平经济理论体系中的重要组成部分,是我国经济建设根本任务的一个重要方面。