英语人>网络例句>静止 相关的搜索结果
网络例句

静止

与 静止 相关的网络例句 [注:此内容来源于网络,仅供参考]

In some cells it goes far enough to inactivate a nearby gene, but in others it does not.

它与在端粒上重复的C1-3A成键,并且也与抑制HML和HMR所需要的顺式运动—静止成分成键。

One who declines contriving for success, not behaves inactively, has more chance to win.

一个有修为的人,即使在静止状态,也能影响到他人,这种影响的效果,其实就是无为而治。

You must pick up indistinct and motionless objects, as well as moving ones.

你既要能看清运动中的物体,也要能辨别静止和模糊的物体。

You must pick up indistinct and motionless objects, as well asmoving ones.

你既要能看清运动中的物体,也要能辨别静止和模糊的物体。

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。

Afterwards, we propose a new constant coefficients measurement method in dynamic equation of robot manipulators, this measurement method includes three groups of experiments: group one, let each joint of robot manipulator keep static to measure the constant coefficients in gravity term of dynamic equation and Coulomb frictional torque, group two: let only one joint of robot manipulator move at a constant velocity to measure the viscous frictional coefficient and constant coefficients in effective inertia of dynamic equation, group three: let only one joint of robot manipulator move at constant acceleration at a time to measure constant coefficients in Coriolis and centrifugal term and coupling inertia of dynamic equation.

让操作器单个关节恒速运动,在对驱动系统中传动机构,减速装置和电感系数综合考虑的基础上,这组实验对粘滞摩擦系数及有效惯量中常数系数进行测量。这种测量方法只要求旋转关节的驱动电机施加恒定电压,回转关节驱动电机施加正弦波电压。3。让操作器单个关节恒加速运动,这组实验测量动力学方程中哥氏力、离心力项和耦合惯量项中的常数系数,这种测量方法只要求单个关节匀加速运动,而其它各关节保持静止,这种测量方法虽然要求关节匀加速运动,但不必进行关节角加速度检测,而只需进行关节角位移和角速度检测即可,输入量直接给定为输入电压。

Simulation results show that the mean square error of initial yaw alignment is about 0.159°.

静止基座的初始对准仿真结果表明,航向失准角估计误差均方差为0.159°。

It elaborates Instantaneous Reactive Power Theory and DSP technology, expounds digital SVC design.

讨论了瞬时无功功率理论和DSP数字控制技术,在此基础上探讨了数字化SVC静止补偿装置的设计。

Two types of CCD image sensors used in still photography (full frame CCDimage sensors and interline transfer CCD image sensors), three types of color image capTure (3-CCD, one CCD wilh c6lor filter array and one monochrome CCD with color filter wheel ) are introduced.

介绍了两种静止摄影用CCD(即全帧CCD和内线转移CCD)、三种彩色影像俘获方式(即三片CCD、带彩色滤色镜阵列的彩色CCD和带彩色转轮的单色CCD

Taking the overall design of JG6120 interurban coach as an example, the preliminary evaluation of the bus load distribution, dynamical performance, economical efficiency, brake performance, steering controllability, and slide performance are carried out. It is the first time to put forward the idea of evaluating the bus performance with KBE; a new calculation method of the bus roll stability angle and a new calculation formula of the bus sliding time and distance are raised too.

以为重庆金冠开发的JG6120长途客车总体设计为例,开展了对载荷分配、动力性、经济性、制动性、操纵稳定性和滑行性的预评价研究,提出了KBE技术在客车总体设计性能评价中的应用,提出了客车静止在横向坡道上的最大侧倾稳定角的新算法,提出了计算客车滑行时间、滑行距离的新公式。

第27/100页 首页 < ... 23 24 25 26 27 28 29 30 31 ... > 尾页
推荐网络例句

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47:5 法老对约瑟说,你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法,同时,采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。

Hey Big Raven, The individual lies dont matter anymore - its ALL a tissue of lies in support of...

嘿大乌鸦,个别谎言的事不要再-其所有的组织的谎言,在支持。