转速

The reference and echo signal were separately measured when the hard target was still, in positive rotation and negative rotation.

利用配合目标静止时测得参考信号与回波信号的关系可得参考信号的角度矫正因子为1.1949，使用该矫正因子测得硬目标在正转和反转时转速与真实转速之间的误差小于

Aimming at the fuel control requirement of micro-turbojet,the automobile's electric fuel pump with adaptable improvement is chosen as fuel-feed system.The performance of fuel pump and the technical difficulty of flux control as the speed of pump doesn't be measured are analyzed.Using Philips 83C552 MCU as the main control chip,the system adopts voltage negative feedback combined current compensation instead of rotation speed negative feedback and a PWM convertor to design the flux closed loop control system.

针对微型涡喷发动机的燃油控制要求，选用汽车用电动油泵进行适应性改进作为供油执行装置，详细分析了电动油泵的特性及泵转速无法测量情况下流量控制的技术难点，并以83C552单片机为核心，采用电压负反馈加电流补偿代替转速负反馈、电机通过PWM驱动的方法设计电动油泵流量闭环控制系统。

Simulation and test prove that this method can improve nutation stability caused by gyroscopic effects effectively.

仿真和实验结果表明，采用这种基于转速的增益预调交叉反馈的控制算法，能够有效地抑制磁悬浮飞轮转子陀螺效应所导致的章动失稳，所设计的磁悬浮飞轮原理样机能够稳定运行在其额定转速30000r／min。

In view of the effective results about the long term disaster weather prediction based on the vari- ation of the earth rotation in the recent 10 years,the authors try to explore the deep reason of major disaster weather with the relationship among the earth nutation,rotation and atmospheric change.

鉴于近10多年来运用地球转速的变化做长期灾害天气预测取得的较好效果，试图运用地球的章动、地球转速和大气变化的关系，探索重大灾害天气的深层次原因。

Describes the Dodge very abundant dynamic performance with an adjective summary, that is smooth this phrase without a doubt, although lets the person startled colorful lively performance in the slow-speed of revolution territory development, but after on expressway, 2.0 make it the motive to add on Dodge the very abundant component heavy 1,455 kg vehicle to be heavy, still had created certain burden to the vehicles, along with vehicle speed climbing, the acceleration strength which very abundant unfolds becomes slower gradually, but uses frequently in the people 80 to 100 km/h sectors, the acceleration time still held certain level, what but was a pity, when after the engine speed arrives at 4,000 rpm,, the noise which transmits by the engine compartment tends to be obvious, caused the trifle regarding comfortableness to decrease.

用一个形容词概括描述道奇酷博的动力特性，那毫无疑问就是平顺这个字眼虽然在中低转速域展现让人惊艳的轻快表现，但上了快速道路之后，2.0升发动机加上道奇酷博份量不轻的1，455 kg车重，仍然对车辆造成了一定的负担，随着车速的攀升，酷博所展现出的加速力道逐渐趋缓，不过在国人使用较频繁的80至100 km/h区间，加速性仍保有一定水平，但较为可惜的是，当发动机转速来到4，000 rpm后，由发动机室所传来的噪音渐趋明显，对于舒适性造成了些许减损。

In curve fitting, the speed-flow rate curve shows that the curve of 16mm pitch wheel is a line and that of 12mm pitch wheel is a down-winding curve, the speed-pressure curves of two pitches both are up-winding curves and in the resistance-flow rate curves the curve of 12mm one has lower slope than that of the 16mm one.

曲线拟合结果显示，在转速-流量曲线中，16mm螺距叶轮为一直线，12mm螺距的叶轮为一向下弯曲的曲线；转速-压力曲线显示两者都是向上弯曲的曲线；阻力-流量曲线显示12mm螺距的叶轮斜率较小。

This paper has discussed several primary algorithm of speed estimation and emphasized on the algorithm of speed estimate based on model reference adaptive system.

无速度传感器转速估计是现代交流传动研究的一个重要方向，本文探讨了两种主要的转速估计方法，即直接计算法和模型参考自适应的速度辨识方法。

The speed estimation without speed sensor is an important trend of modern AC drive. This thesis has probed several primary algorithm of speed estimation and analyzed emphatically the algorithm of speed estimate based on model reference adaptive system. The results of simulation prove its feasibility.

无速度传感器转速估计是现代交流传动研究的一个重要方向，本文在探讨了几种主要的转速估计方法之后，着重分析了基于模型参考自适应系统的速度辨识算法，并通过仿真证明了该方法的可行性。

Stirring speed can influence reaction of desulfurization with pyrolusite pulp.

对用空气配制的低含量SO〓烟气，当搅拌转速≤500r/min时，SO〓主要与MnO〓反应生成MnSO〓；当搅拌转速≥1000r/min时，溶解氧增多，SO〓主要在锰离子的催化作用下生成H〓SO〓。

For optimization parameters in structure and motion,the experimental method for the five-factor quadratics rotary orthogonal combination was adopted,and two evaluation indexes(mixing homogeneity and material powder) were applied in the experiment.

为了优化其结构与运动参数，采用二次回归正交旋转组合试验设计对5个试验因素进行了混合均匀度及物料细粉率作为指标的试验研究，得出了其结构与运动参数的合理组合，即揉搓转子转速宜取40~50 r/m in、剪切转子转速宜取55~65 r/m in，转子间隙宜取11~13 mm，齿杆角度宜取5~°10，°混合时间宜小于10 m in，充满系数不应小于0.1。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。