rotational speed

Take into consideration of the timing of gear shift when the vehicle running on the road, the thesis formulates the rotational speed controlling scheme of the variable frequency motor on the testing bench.

结合车辆在路面行驶时的换档时机，制定了测试台架上变频电机转速的控制方案。

Design of Rotational Speed Control System for Single Crystal Furnace Crucible

单晶炉坩埚旋转速度控制系统设计

The system motion turns to quasi-period from equilibrium, and this is true for cracked-rotor at the cracked rotor oil film critical instability rotational speed.

裂纹转子在油膜临界失稳时的系统运动亦为拟周期运动。

But work, bigger, allowed temperature limit rotational speed is low.

但工作时，温升较大，允许极限转速较低。

The experiments show that the reaction rate k can be significantly improved by increasing the rotational speed in the impinging streams reactor. The reaction rate constant k was significantly higher than that in the stirred reactor at the geometric proportion effective power.

实验表明，增加转速可以显著提高反应速率k，在等比有效功率下，浸没循环撞击流反应器中的化学反应速率常数k明显高于搅拌釜反应器。

As a new technique of manufacture, high-speed machining has developed just more than ten years, besides rotational speed, setting accuracy of feed unit and response ability of control system of high-speed NC machine tools all need to be improved correspondingly.

高速加工是近十年来发展起来的一种先进制造技术，高速加工的数控机床除了提高机床主轴的转速外，还必须相应地提高机床的进给速度、进给定位精度和控制系统的响应速度。

After increasing the impedance, the big machine volute inlet pressure, the greatest rotational speed rises, the surge tank highest swell surpass the design value, which does not favor the big machine security steady operation.

在增大阻抗后，大机的蜗壳进口压力、最大转速上升、调压井最高涌浪都超过设计值，不利于大机的安全稳定运行。

The rotational speed improvement of the three-parameter battery tester was outlined.

来文介绍了三参数电池测电机转速的改进上作。

Thus, Calculating the critical rotational speed of the helix ditching machine.

由此，推导出立轴柱形变螺距螺旋开沟机的临界转速。

After increasing the impedance, the big machine volute inlet pressure, the greatest rotational speed rises, the surge tank highest swell surpass the design value, which does not favor the big machine security steady operation.

在增大阻抗后，大机的蜗壳进口压力、最大转速上升、调压井最高涌浪都超过设计值，不利于大机的安全稳定运行。

Then through the modal analysis get output axis of frequency and vibration model, analyzes whether it is to produce resonance, ask out of output axis limit rotational speed and working speed compare.

然后通过模态分析得到输出轴的频率和振型，分析其是否产生共振变形，求出输出轴的极限转速和工作转速做比较。

Water pump and cooling fan of traditional cars are usually driven by the engine through V belt, which is intertwined between crankshaft pulley and water pump pulley. Therefore, the rotational speed of water pump is in proportional relationship with the engine speed.

而传统汽车的水泵和散热风扇一般由发动机曲轴通过V带传动，传动带环绕在曲轴带轮与水泵带轮之间，因此水泵转速与发动机转速成比例关系。

But one but the rotational speed falls, also will be unable to start!

但是一但转速掉下来的时候, 也会死火!

Hardware and Software Design on Automate Control for The Rotational Speed of Metering-Device's Axle

排种器转速自动检测的硬件及软件设计

The standard samples of the metals and non-metals are separated by an eddy-current separator, and a separation efficiency of 95% can be obtained when the operation factors, mainly feeding speed, rotor speed and belt rotational speed, are proper.

利用涡电流分选机对铜、铝和塑料的标准样进行了分选，通过调节进料速度、转子速度和皮带转速，可以得到分选效率达到95%以上。

Rotational Speed Test of High Spinning Projectile Based on Magnetic Coil Sensor

基于线圈式地磁传感器的高速旋转弹转速测试

After the kinematic law of an original component with constant rotational speed was determined, the kinematic law of a servomotor was worked out by computing the time when the mechanism passes its adjacent track points.

在确定恒转速原动件运动规律基础上，计算机构经过相临轨迹点的时间，给出了伺服电机的运动规律。

Completing detail design of analog control circuits for rotational speed of dc motor, power driver circuit board and multifunction-integrated control circuit board were developed.

完成电动机转速的模拟电路控制方案的详细设计。开发出电动机功率驱动板、集成多种实验电路的一体化控制板。

The testing algorithm was given, and the anti interference algorithm for the ignition signal testing and the method to control rotational speed and testing sequence were mainly elaborated.

文中介绍了测试算法，着重介绍了转速控制、顺序控制的实现方法和点火信号测试软件抗干扰算法。

The effects of five adjusting parameters of valve timing, admission valve clearance, emission valve clearance, rotational speed, load rate are interacted.

配气相位、进气门间隙、排气门间隙、转速、负荷五个调整参数之间是相互影响的。

The paper introduces a new method of measuring rotational speed on electromotor with singlechip microcomputer, characterized as wide-range& high precision of rotational speed measuring.

本文介绍了一种应用单片机技术测量电机转速的新方法，具有测速范围宽（25～25000rev／min）和测量精度高（相对误差＜10（-5））等特点。

Hydraulic loading system with secondary regulation is designed based on secondary regulation technique including two parts, rotational speed control and torque control, which are connected stiffly and coupled heavily with each other.

次级调节液压加载实验台是基于次级调节原理设计而成的，它主要包括转速控制和扭矩控制两个组成部分，两者之间刚性连接，存在着严重的耦合现象。

Base on these data, the author established regressive equation, summarized and analyzed the influence of the high rotational speed and different compress cell on the test pump.

对这些实验数据建立回归方程，总结分析不同的高转速和不同增压单元对多相流输送的影响。

The experimental results show that the vibrations and impacts become larger and drop duration time lasts longer with the increase of initial rotational speed, and then whirling motion is more likely to happen.

试验结果表明：初始转速越高，转子跌落后保护轴承受到的振动冲击越大，跌落持续时间越长，越容易出现涡动现象。

Introduced in the design how to uses the thermocouple sensor to carry on the survey for the temperature, and how to uses the frequency changer to control the electrical machinery rotational speed.

在设计中介绍了如何使用热电偶传感器对温度进行测量，如何使用变频器控制电机转速。

PLC writes to converters the control words and rotational speed set value, at the same time read the status words and the real values of the rotational speed from the converters.

PLC向变频器写入控制字和转速设定值、并读取变频器的状态字和转速实际值。

Rotational Speed improvement of the Three-Parameter Battery Tester

三参数电池测电机转速的改进

The flow and mixing characteristics of mono-sized particles in the double cone blender are analyzed. And the effect of rotational speed of blender and loading mode on mixing is investigated.

分析了双锥型混合器内均一粒径颗粒的流动和混合特性，模拟了混合器旋转速度和装料方式对混合特性的影响；并研究了填充率对非等粒径二元颗粒体系混合效果的影响。

The test result showed that it could decrease the rotational speed between the drive part and the driven part when clutch was locked, and improve the shift quality of AMT with control of the fuel stop valve.

试验结果表明，换挡过程中通过控制断油电磁阀，可以减小离合器接合时主、被动部分的转速差，显著改善了AMT的换挡品质。

Batch mixing tank with agitator's rotational speed is adjustable, which can prevent slurry from depositing and blocking.

批混罐带搅拌器，转速可调，可防止泥浆沉积、结块。