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- On the basis of AT89C2051 chip,a software method is put forward for the sensorless trapezoidal BEMF BLDCM in the open-loop start-up control. 针对具有梯形反电势波形的无位置传感器无刷直流电机(BLDCM)的开环起动控制;提出一种基于AT 89 C2051芯片的软件实现方法.
- trapezoidal BEMF 梯形反电动势
- Rats of group C were exposed to BEMF, 1 h /d. C组暴露于BEMF治疗 ,1h/d ,1次 /d。
- Trapezoidal no volume! It is a planar graph! ! ! 梯形没有体积！它是一个平面图形！！！
- Beijing’s wonton skin Why is trapezoid? 北京的馄饨皮为何是梯形的?
- A double trapezoidal specimen will generate shear debonding. 双梯形的试样将产生切变脱胶现象。
- Low pass filter is used to filter PWM frequency on the BEMF signal. 通常使用低通滤波器来滤除PWM波对反电动势的影响。
- A trapezoid is a quadrilateral with two parallel sides. 梯形是具有两平行边的四边形。
- For making fine turning and trapezoid threading turning tools. 制造精车刀和螺纹车刀。
- I can't tell if that object is a parallelogram or a trapezoid. 那个物体是什麽形状？那样东西是什麽形状？
- EM group rats were exposed to bionics electromagnetic fields (BEMF) ,lh /d. EM组：BEMF照射，1次/日，1h/d；
- There are different mechanisms of therapeutic effect of BEMF and estrogens. 与雌激素的治疗作用存在不同机制。
- The amplitude of the BEMF is proportional to the angular velocity of the rotor. 反电动势的大小与转子的转动速度成比例。
- A common window is typically rectangular, but this window is trapezoidal. 一般窗户都是长方形的，这扇窗户是梯形的。
- The sound box is trapezoid in shape, and decorated with ethnic motifs. 木制音箱呈梯形上面饰有具有民族色彩图案，
- The equation of deformation for the case of a trapezoid bar is given. 梯形杆件的形变方程.
- The line that joins the midpoints of the nonparallel sides of a trapezoid. 中线梯形非平行两边的中点连线
- The data showed that after exposure of ovx-induced osteoporosis rats to BEMF for 10 weeks, the % Tb. 治疗10周后;EM组大鼠%25Tb.
- Firstly, the dissertation presents principles of commutation torque in the condition of ideal BEMF waveform. 本文首先分析了影响理想的方波型无刷直流电机换相转矩脉动的因素，包括：调制方式，直流侧电压，重叠换相角等。
- BEMF stimulation exposure elevated serum BGP and ALP concentrations of OVX rats. 血清BGP升高，高于Sham组、E组，有非常显著差异(P<0.;01)，与OVX组无显著性差异(P>0
