将系统进入闭环运行，利用过程PID控制自动调节达到稳定转速的目的。
Make the system start closed-loop running and use the process PID, control self-adjusting to achieve purpose of stable speed.
不像运行起来比它更稳定的直列六缸引擎或者极其流畅的V - 12引擎，卑微的四缸引擎会以一种比自身机轴转速高两倍的频率产生一上一下的振动。
Unlike the better balanced straight-six or even the ultra-smooth V-12 engine, the humble four-cylinder generates an up and down vibration with a frequency of twice the crankshaft's rotational speed.
流量均匀压力稳定，低转速时更为明显。
Flow of uniform pressure stability, low speed when the more apparent.
进一步分析表明，能耗不能降低的原因仍然是因为转速被稳定在最低转速下运行所致。
Further analysis shows that the reasons for reducing energy consumption can not continue because the speed was stable in operation due to the minimum speed.
磁悬浮飞轮转子在高转速下表现出的陀螺效应是影响系统稳定性的主要因素。
At high rotational speeds, the gyroscopic effect of flywheel rotor is the major factor that influences rotor stability.
采用变频无级调速、转速稳定、调速方便。
Frequency conversion and stepless speed regulation, thus ensuring steady speed and facilitating speed regulation.
针对系统的鲁棒稳定性、稳态精度以及抗干扰能力，进行了变负载、变电机转速实验。
And aiming at robust stability, steady state accuracy and capability of anti-jamming, we take the experiments of the variable speed and load.
船舶电站频率的稳定性主要取决于柴油机调速系统的转速响应特性。
The frequency stability of a ship power station is decided by the speed response characteristic of diesel engine speed regulation system.
船舶电力系统频率的稳定性主要取决于船舶电站柴油机调速系统的转速响应特性。
The frequency stability of a ship power system is determined by the speed response characteristic of the diesel engine speed regulation system in the ship power station.
一个完美的调整引擎将有稳定的怠速，收油门转速会上上下下都是不正确的。
A well-adjusted engine will have a stable idle and will not surge up and down after the throttle is closed.
本机采用大功率无刷电机，转速稳定，经久耐用。
The machine adopts high-power brushless motor, speed stability and durability.
通过试验验证了该校准盘系统的转速稳定性并证明线速精度均达到或优于设计参数的要求；
It is verified experimentally that both stability of rotating speed and accuracy of linear velocity of this calibrating disk system have achieved or exceeded the desire of designing parameters.
飞轮控制系统是个多回路系统，内回路为电压稳定回路，外回路在不同的工作模式下分别为电流回路和转速回路。
Flywheel control system has two closed loops, the inner is voltage stabilization loop, other is current loop or is speed loop in different mode.
指出在紊流状态下，动特性系数的迭代是正确计算轴承稳定极限转速值的关键。
At turbulent state, iteration of the dynamic coefficients is the key to correct calculating revolution values of stability limit of.
高转速的磁盘对磁头稳定性不利，但影响不大。
When the disk rotation speed increases the stability of magnetic head is slightly worsened.
在已知滑动轴承动力特性的八个系数的基础上，通过计算来预报转子轴承系统失稳转速及稳定裕度。
This paper based on the eight coefficients of sliding bearing dynamic properties, get by calculated to forecasted lose rotational speeds and stability extent of rotor bearing system.
在硬盘伺服信息写入的过程中要求磁碟转速要非常稳定。
During writing servo information on disk, the disk must rotate very stably.
同时利用变频调速自动控制粗苯冷却泵的转速，实现粗苯温度的稳定。
And using the frequency variable adjusting speed technique to control the speed of benzole cooling pump automatically, to achieve the temperature stability of the benzole.
在液力传动系统中，泵轮和涡轮的转矩及转速应保持稳定才能使系统正常运行。
In hydraulic transmission system, turning moment and rotational speeds of pump impellers and turbines have to be kept steady in order for the normal operation of the system.
结果表明，连续改变机床主轴转速时振动响应的最低点即为不发生颤振的稳定切削点。
The results show that the vibrational response varies regularly when the spindle speed is continuously changed from low to high.
该编码器可作为较高精度的位移、计数或转速传感器，输出稳定且环境适应性明显优于常规编码器。
The designed encoder is used as a sensor of displacement or counting or rotatory speed with better precision, steady_going output and applicability of environment.
极限切深试验表明，以稳定切削点所对应的主轴转速进行切削可以提高机床的切削效率。
The experiments to verify the limit cutting depth show that the cutting efficiency of machine tool can be improved by cutting at the spindle speed corresponding to the stable cutting point.
使用该方法计算临界转速，数值稳定性好，计算精度高，容易编制通用计算程序。
The method in this paper has better numerical stability, higher computation precision, and it is easy to develop a general computer program.
开发的程序可以计算转子各阶模态振型与临界转速，进行稳定性的分析。
The program can calculate modal shapes and critical speeds, analyze the stability of the rotor system.
仿真结果表明：新型观测器克服了传统方法存在的区域不稳定的缺点，能够在全速范围内准确辨识转速。
Simulation results show that new observer overcomes the disadvantage of the existence of the unstable regions and can identify speed accurately in full speed region.
同时，发动机转速的恒定也使液压泵输出排量稳定，进而保证了行走速度和振动频率的稳定，提高了压实质量。
At the same time, constant engine speed stabilizes output displacement of hydraulic pump and then stabilizes travel speed and vibratory frequency in turn, so that compaction quality is increased.
基于非线性控制系统的绝对稳定性定理，提出了一种新的通用异步电机转速自适应辨识方法。
A new general arithmetic to design speed estimation arithmetic of asynchronous motor based on the absolutely stability theorem of nonlinear system is introduced.
这为解决非直联水轮发电机组甩负荷时转速上升的计算和调节负荷时调节系统稳定性的分析等问题提供了一个重要依据。
Thus an important basic is provided for calculation of speed rise when load rejection and for analysis of regulation system stability when load regulation.
在离心铸管浇注过程中，扇形包翻转速度稳定与否是影响铸管成形质量的主要因素。
In the process of centrifugal casting, the stable overturn speed of the sector ladle is the main reason to influence the quality of casting pipes.
高转速的磁盘对磁头稳定性不利，但影响不大。
When the disk rotation speed increases, the stability of magnetic head is slightly worsened.
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