准确迅速地反应了发动机转速波动规律。
The microcomputer system exactly and rapidly shows the ratio of fluctuation of speed.
负荷相同时，转速波动率的大小与转速没有单调变化关系。
However, when the load is same, the fluctuation ratio is independent to the mean engine speed.
转矩与转速波动的频率相等，波动的幅值随转子绕组故障严重程度增加而增加；
Simulation and computation results show that the rotor winding faults will cause electromagnetic torque and rotating speed to fluctuate;
采用电压负反馈法，控制主要由供电电网产生电源电压波动而引起的储纬器电机转速波动。
By means of negative feedback, the motor's speed fluctuation of the device, caused mainly by voltage fluctuation of power supply, can be controlled.
计算结果表明，这种控制方法简单可行，压缩机转速波动较小，且有着较好的稳定性和抗干扰能力。
The results show that the fluctuation of compressor's rotating speed is small using this control method, and it has robustness.
为了可靠运行，必须降低转速的波动，即必须有效抑制负载转矩脉动和电机电磁转矩脉动带来的转速波动。
In order to have a reliable operation, must reduce the speed fluctuation, namely must effectively restrain the load torque ripple and motor electromagnetic torque ripple of speed fluctuation bring.
利用瞬态曲轴转速波动进行时域分析可在低速时诊断出单缸熄火，在高速时由于波动的复杂性就难以做到。
The single cylinder misfire can be also done by the frequency spectrum analysis of rotating speed fluctuation at both low and high speeds, but it can not be determined which cylinder is misfired.
基于曲轴转速波动法，通过对发动机58齿转速信号进行分析，计算发动机每缸失火粗暴度来判断是否失火。
Based on the method of engine crank speed fluctuation, the 58X speed sensor signal is analyzed by the input capture.
大小涡轮相继增压系统上、下行切换试验结果表明，阀门切换过程中发动机转速波动范围随着负荷的升高而增大。
The experimental results of upwards and downwards switching processes showed that the fluctuation range of engine speed increased as the load increased in the valve switching process.
分析了高速滚动轴承在转速波动这一非平稳状态下的运行状态，研究了转速波动对轴承运转性能和失效模式的影响。
The performance of high speed rolling bearing was studied under unstable conditions of rotation speed fluctuation, and the failure modes of the bearing were analyzed under such conditions.
研究结果表明：扭矩波动、转速波动、HC排放值和HC升高率都受空燃比的影响，并且它们的变化趋势具有较好的一致性；
Test results show that fluctuation of torque output and engine speed, HC emission and its rise ratio are all affected by excess air ratio.
实验结果表明，该电机具有良好的稳定性，利用频率自动跟踪技术对电机转速进行闭环控制，可以将其转速波动稳定在3%之内。
Results show that the motor has good stability. The speed fluctuation is controlled within 3% by the frequency automatic tracking technique.
长期以来，透平机一直使用传统的机械调速系统来控制其转速，卡涩、液压系统渗漏及转速波动范围大等均属其不可克服的缺陷。
It is a long time since the traditional mechanismic speed governing system has been used for control the speed of turbine. It has so much defects as choke, leakage, wide velocity perturbation.
根据往复式内燃机工作的本质特征，选择了与传统时间域及频率域不同的曲轴角度域及频率域，对汽车发动机的瞬时转速波动进行了划分。
According to the basic characteristics of internal combustion engines, crank Angle domain and its frequency domain were chosen, and engine momentary speed fluctuations were divided.
用算符分解算法(AOM)研究了扭矩波动和时变啮合刚度对拍击门槛转速的影响。
A-operator method (AOM) is used to study the influence of the torque fluctuation and time-varying meshing stiffness on rattling threshold speed of the gear system.
低速端的扭矩波动对系统拍击门槛转速影响较小，而高速端的扭矩波动对拍击门槛转速影响较大；
The torque fluctuation on the higher speed shaft influences the rattling threshold speed more greatly than on the lower speed shaft.
从最低转速到最高转速，伺服电机都能平滑运转，转矩波动小。
From the lowest to the highest speed, speed servo motor can smooth running, torque ripple is small.
因此，新型转子泵可以采用较普通转子泵更高的工作转速、更多的齿数，并获得更大的流量、更小的波动和更小的磨损。
So, this new type of cycloidal pump is capable of operating with higher rotation speed and more teeth, higher specific flow rate, less flow fluctuation and wear.
其中驻波超声波电机具有驱动和控制电路简单，转速平稳，波动较小等突出优点。
Standing wave ultrasonic motors have many outstanding features for simple drive and control circuit, stationary speed of rotation, smaller undulation, etc.
考虑电动机转速的波动，建立了系统的等效驱动力学模型。
Taking account of motor rotating speed fluctuations, a system equivalent mechanical model is established.
本文论述的是根据台架试验及模拟计算结果得出的多缸发动机进气系统内压力波动与充气效率-转速特性的关系。
Presented in this paper is the relationship between intake pressure wave actions and the general volumetric efficiency speed characteristics of multi cylinder engines.
振幅、相位、进动角速度在过临界后的波动频率随转速增加而增加。
The minimum and maximum of amplitude fluctuation correspond with the minimum of precession speed after the critical point on the response curve.
摘要抽油机中载荷变化大，易引起电动机转速和转矩的波动。
This paper mainly focuses on the fluctuation of velocity and torque of the electromotor because of the variational load in the pumping unit equipment.
通常双缸单作用活塞泵的恒转速运行会导致管路流量波动，使之在恒流量场合较少应用。
In general, a double cylinder single acting piston pumps rotates at a constant speed, this results in considerable fluctuation in the flow curve.
从最低转速到最高转速，伺服电机都能平滑运转，转矩波动小。
From the lowest speed to the highest speed, servo motor can smooth running, torque ripple is small.
当恒星画出的椭圆彼此间绕转速率差异甚大时，星系不会出现波动结构。
When stars' ellipses rotate at widely different speeds, the galaxy has no wave structure.
负载压力波动、加载转矩和转速的波动，主要影响系统的稳态性能。
While the load pressure fluctuation, the load torque fluctuation and the rotational speed fluctuation mainly affect the steady performance of the system.
若调节稳压螺杆的转速，则可完全补偿主螺杆压力和产率的波动。
If the screw speed of parallel pressure stabilization apparatus is varied corresponding to the pressure fluctuation, the pressure and output fluctuation of extrusion can be fully compensated.
简要介绍了它的系统结构、功能与工作原理，并对该调速器进行900余小时多工况配机试验，主要包括起动试验、调速性能试验、转速稳定性试验和耐背压波动试验。
Experiments of over 900 hours matching diesel were done in factory, covering the speed governor's start, speed performance, speed stability, and speed fluctuating with back pressure.
简要介绍了它的系统结构、功能与工作原理，并对该调速器进行900余小时多工况配机试验，主要包括起动试验、调速性能试验、转速稳定性试验和耐背压波动试验。
Experiments of over 900 hours matching diesel were done in factory, covering the speed governor's start, speed performance, speed stability, and speed fluctuating with back pressure.
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