查询词典 Pi

By measuring the change of primary voltage of the transformer in several periods, PI controller adjusts the width of pulse so that flux imbalance of the transformer is limited in a reasonable scope.

通过检测变压器原边电压在几个周期内的变化量，利用PI调节器得出的控制量来适时的调整触发脉冲的宽度，把变压器直流偏磁限制在较小的范围之内。

Permanent Magnet Synchronous Motor has the feature of strong nonlinear, coupling and parameter time-varying. The Proportional and integral part of traditional PI controller is fixed and unable to meet high precision requirements of PMSM speed control.

永磁同步电机是具有强非线性、强耦合和参数时变特性的被控对象，传统PI 控制方法作为一种线性控制其比例、积分环节的参数固定不变，不能满足永磁同步电机对高精度的要求。

The detailed steady state process of OCC APF with both resistive load and nonlinear load is analyzed,based on which the physical meaning and steady condition of proportional part and integral part in PI controller are given.

在此基础上给出了 PI调节器中P和I环节的物理意义及其应满足的条件，发现可将其作用分开：I环节主导Um长期内较大的变动，用来反映负载大小的改变；P环节每个工频周期内对Um小范围调整，用来平衡每个工频周期内负载存在的谐波。

Then we study the simulation software PSAT, based on that take the second exploit towards the software and on the basis of MATLAB/SIMULINK we establish the intangible control drivers model then put it into the PSAT, comparing to the former PI control model, it increases the emulational precision.

对仿真软件PSAT进行了研究，在其基础上对软件进行了2次开发，在MATLAB／SIMULINK平台上建立了模糊控制的驾驶员模型，将其导入PSAT，相比原来的PI控制模型提高了仿真精度。

Regarding (6) type, when tradition Time variable t is two spatial vectors (+ psi 1i) and (- psi 2j) Crossed products v also is not 0, it (x1, x2, x3) differs 90 compared to on speed with the three-dimensional space in the space by the pure imaginary number attribute, I=e^I pi, therefore it Number space has in the physical property with the dot product constitution the difference, because Crossed products psi 1i (X psi 2j extremely small visible it is equal to zero under the conventional speed, but is very big in the object movement speed time, Crossed products psi 1i (X psi 2j in the physical quantity and for the quantum mechanics in may not to the easy quantity, its space and the conventional space is different, the performance is intrinsic or the interior space If the definition vector (+ psi 1i) and (- psi 2j) the dot product constitutes the three-dimensional space (x1, x2, x3) is exterior space, but the three-dimensional space which (+ psi 1i) and (- psi 2j) Crossed products constitutes by the vector is the internal space, contrasts its component

对于⑥式，传统时间量t为两个空间矢量(+ψ1i)与(-ψ2j)的叉积比上速度v且不为0，其与三维空间(x1，x2，x3)在空间上相差90度以纯虚数表征，I=e^Iπ，故其与点积构成的实空间有物理性质上的不同，因为在常规速率下叉积ψ1i(Xψ2j非常小可视其等于零，而在物体运动速率很大时，叉积ψ1i(Xψ2j之中物理量与则为量子力学中的不可对易量，其空间与常规空间不同，表现为一个内在或内部性空间。若定义矢量(+ψ1i)与(-ψ2j)点积所构成的三维空间(x1，x2，x3)为外部空间，而由矢量(+ψ1i)与(-ψ2j)叉积而构成的三维空间为内部空间，对比其分量

Sometime soon, I will start assigning ranges for calculating the quadrillionth (10^15th) bit of Pi.

很快我将开始分配对Pi的第10^15比特位的计算任务。

September 6, 1998- PiHex begins calculations of the quadrillionth bit of pi.

1998年九月6日- PiHex 开始 pi 的千万亿分之一位的计算。

The backyard has the *all rearing pond that self builds in person , has *all carp and the streeet cleaner (plain name inside: Pi, rake fish , the plain are from South America) being OK.

后院有个自己亲自修建的小鱼池，里面有小鲤鱼和清道夫（原名：琵耙鱼，原产自南美洲）即可。

She attained added recognizability from her roles as the diabolical Elena on ABC's "General Hospital" and from countless guest starring roles on such prime time shows as "Magnum PI","Love Boat","Taxi","Night Court","Mike Hammer","Remington Steele","Matt Houston","Barney Miller", and many others.

达到了，她说：可识别性，从她角色作为恶魔elena在美国广播公司的"总医院"，并从无数客户主演的角色，对这样的黄金时间显示为"马格兰丕"，"爱船"，"的士"，"夜间法庭"，"麦克锤"，"雷明顿斯蒂尔"，"亚光休斯敦"，"巴尼米勒"，以及其他许多人。

The trial demonstrated that PI-88 increased time to tumour recurrence by 76%.

试验表明PI-88使肿瘤复发时间延长了76%。

There had been a moment during the breakfast meeting, though, after the backslapping and the small talk and when all of us were seated, with Vice President Cheney eating his eggs Benedict impassively and Karl Rove at the far end of the table discreetly checking his BlackBerry, that I witnessed a different side of the man.

那次早餐会期间，在表示过关心和寒暄以后，我们所有人坐了下来，我注意观察了一下，副总统切尼面无表情地吃着班尼迪克蛋（Eggs benedict，源自美国，以英式松饼、火腿、水煮蛋以及荷兰酱组合而成），卡尔。罗夫在餐桌的远端谨慎地经常查看他的黑莓手机，我目睹了他所不为人知的一面。

Talk Undelete failed; someone else may have undeleted the page first.

Talk 无法删除选定的页面或图像（它可能已经被其他人删除了）。