转速

One of the controllers is the speed controller.

一个模糊控制器用于控制电动机的转速，提高转速控制的鲁棒性。

By so doing, switching loss is reduced and the utilization ratio of busbar voltage is increased. The relevant software was designed to meet the needs of high speed cone winder.

针对可能出现的过调制情况给出了两种针对高转速和低转速的调变方法，降低了开关损耗，提高了直流母线电压的利用率。

In order to find a way of spark timing intellectual control on automotive gasoline engine,the relation between a CS492Q gasoline engine performance and the spark advance angle is obtained by engine bench test,and a fuzzy controller which controls spark timing is proposed.

为探索车用汽油机点火智能控制的有效方法，对 CS492 Q汽油机进行台架实验，在得到汽油机性能与点火提前角关系的基础上，以汽油机曲轴转速变化量和转速相对于点火提前角增量的变化率为模糊输入量，点火提前角增量为模糊输出量，建立模糊控制器，对汽油机点火正时进行模糊控制仿真。

NJWGY3665 bacterial strain is inoculated in a glucose nutrient culture medium to carry out the slant culture, the culture temperature is 28 to 37 DEG C and the culture time is 2 to 6 days;(2) seed culture: a spore which is cultured on a slant is produced into a single-spore suspension by using sterile water, which is also inoculated in a seed culture medium for culture, the temperature is 28 to 32 DEG C, the rotational speed is 200rpm and the culture lasts for 2 to 6 days;(3) fermentation culture: the seed liquid is inoculated in a fermentation culture medium for culture, the temperature is controlled at 28 to 37 DEG C, the pH is controlled at 6.0 to 9.0, the rotational speed is 180 to 220rpm, the fermentation lasts for 5 to 9 days, so as to obtain the Streptomyces sp., methanol or ethanol is used for the extraction and separation of mycelium through the method of centrifugal separation, then the resin method is adopted for carrying out refining, so as to obtain the peptide antibiotics enramycin.

NJWGY3665菌种接到葡萄糖营养培养基中，进行斜面培养，培养温度28-37℃，培养时间2-6天；(2)种子培养：用无菌水将斜面上培养的孢子制成单孢子悬液，并接种到种子培养基中培养，温度为28～32℃，转速为200rpm，培养2-6天；(3)发酵培养：将种子液接种到发酵培养基中培养，温度控制在28-37℃，pH控制在6.0-9.0，转速180-220rpm，发酵5-9天，得到链霉菌，采用离心分离的方法将菌丝体用甲醇或乙醇进行提取分离，再采用树脂方法进行精制，获得多肽类抗生素安来霉素。

In pumping high-viscosity oil, with the increase of the shaft speed, the efficiency of the pump at the optimum operating point is improved, and the flow rate and hoisting height at the optimum efficiency point rises, therefore the rated speed of the viscous oil pump should be remarkably higher than that of the water pump.

输送高粘油时，随着泵轴转速的提高，离心泵最优工况点的效率提高，最佳效率点的流量和扬程也相应提高，因此，输送粘油用的泵的设计转速必须比水泵有较大幅度的提高。

Based on the nonlinear dynamical model of the rotor-bearing system with rub-impact and pedestal looseness, the system periodic motion and its stability were studied in unbalance-rotating speed plane and rotor/stator clearance- rotating speed plane, and the effect of parameters on the system was analyzed and tested by the experiment.

以含有松动和碰摩耦合故障的转子轴承系统为研究对象，对松动碰摩耦合故障转子的周期运动稳定性及其失稳规律进行了研究，得到了系统在不平衡量-转速、碰摩间隙-转速等参数域内的分岔集，分析了这些参数对系统周期运动稳定性的影响，并用试验加以验证。

Based on the nonlinear dynamical model of the rotor-bearing system with rub-impact fault, the stability of the periodic motion of the system in unbalance-rotating speed plane and rotor/stator clearance- rotating speed plane were studied by the continuation-shooting algorithm. The system periodic motion and its stability were obtained. An experimental setup was developed to investigate nonlinear vibration characteristics of such rotor bearing system.

根据碰摩转子轴承系统的非线性动力学模型，利用延拓打靶算法，在碰摩转子轴承系统不平衡量-转速和碰摩间隙-转速参数域内，研究系统的周期运动及其分岔失稳等动力学行为，得到了系统周期运动的稳定性及失稳规律；建立了研究转子轴承系统碰摩故障的实验装置，通过实验，研究了转子系统碰摩故障的非线性振动的特征。

To regulate the spindle speed to the stable region can not only make the cutting process stable and achieve excellent workpiece surface, but also improve the metal removal rate by enlarging the cutting depth . The experiment results show that the limit cutting depth can be greatly improved.

将机床主轴转速调整到稳定区工作不但可以使切削过程稳定，获得优良的加工表面，而且可以通过进一步增大切削深度提高机床切削效率，本文对优控主轴转速下机床切削系统的极限切削深度进行了试验考证。

These consist of a beautiful analogue rev-counter, red-lined at 13 500rpm, and a big shift light that never came on while I was riding the bike despite revving it almost into the red a couple of times.

这些包括一个美丽的模拟转速柜台，红色的内衬， 13 500rpm ，和一个大的转变出发，从未上，而我是骑自行车，尽管转速几乎变成红色了几次。

The controlling method of glass fiber content in pelletizing of thermoplastics reinforced plastics was pointed out.

探索了双螺杆挤出机螺杆转速、加料机转速及玻璃纤维加入股数与玻破纤加入量的内在关系，提出了热塑性增强塑料在造粒过程中控制玻纤含量的方法。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐