1、

Computer Simulation of Extravehicular Activity Based on Torque Ratio Optimization

基于力矩比优化的航天员舱外活动仿真

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2、

this paper analyses the feature of sugarcane mill gearing and proposes the method to ensure uniform distribution of power between two branches based upon the constant torque ratio of planet carrier and annular gear.

分析了一种甘蔗压榨机齿轮传动的特点,并提出基于行星架和齿圈转矩比为定值的保证功率二分支均匀的方法。

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3、

Through analysis, this article points out that how to handle the torque reserve, thrust reserve and speed reserve of the drill rig is the key for the improvement of the utilization ratio and reduction of designed head loss in the hydraulic system.

本文分析指出如何处理液压凿岩钻车的备用扭矩、备用推力和备用速度,是提高液压系统功率利用率,减少设计压力损失的关键。

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4、

The analysis indicates that tapping torque increases as net cutting time ratio increases, where net cutting time ratio influences the tapping torque more significantly.

结果表明,攻丝扭矩随净切削时间比的增加而增大,且对攻丝扭矩的影响最显著。

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5、

This paper presents the calculating method for stator and rotor harmonics unit leakage permeance, slot end and slot bottom pitch leakage reactance coefficient, starting torque, breakdown torque, and starting current in designing of motors with further pole ratio.

阐述远极比电机设计时定、转子谐波单位漏磁导、槽口、槽底节距漏抗系数、起动转矩、最大转矩、起动电流的计算方法。

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6、

It can power transmission, realize shifting and larger torque converter area, which also has reverse and empty gear shift, large shifting ratio, comfortable operation and small volume.

行星齿轮机构速比大、体积小、操纵容易、同时获得空档和倒档,加大变速器的变矩范围,可以实现变速和动力传动,因此在AT上被广泛的应用。

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7、

In this paper, according to the law of conservation of energy a new method is put forward that can simultaneously deduce the calculation formulas of transmission ratio and efficiency by solving torque equations of gear trains.

本文根据能量守恒定律,提出用新的力矩法,通过求解轮系的力矩方程组便能同时推导出传动比与效率的计算公式;同时,还能分析轮系中的功率流向。

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8、

And on the other hand, drill pipes with low strength and optimum pretensioned torque and proper bending strength ratio should be selected, upset drill pipe should be used between drill collar and drill stem, and corrosion control and drill tools detection should be strengthened.

另一方面在保证提升能力前提下优先选用低强度钻杆,使用最佳预紧扭矩,选择合适的弯曲强度比,在钻艇和钻杆之间使用加重钻杆,控制腐蚀以及加强钻具的探伤与检验。

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9、

A improved motor model is proposed by analyzing general inductive motor mathematics model. The model makes rotor current is linear with slip ratio and realizes linear relation between electromagnetism torque and rotation rate.

通过对一般化感应电机数学模型的分析,提出一种改进的电机模型,该模型使转子电流ir与转差率S呈线性变化,实现了电磁转矩和转速之间的线性关系。

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10、

Applying duty ratio control technology can effectively reduce the torque ripple.

将占空比控制技术用于直接转矩控制系统中可以有效地减小转矩脉动。

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11、

finally, a solution to restraining the harmonic current and ripple torque is suggested, ie a larger modulation frequency ratio of 3k is to be adopted, as it is used in spwm.

文中还提出了抑制谐波电流和脉动转矩的方法,如在SPWM生成中,采用较大的3的整数倍调制比。

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12、

the calculation of the planetary gear transmission ratio and torque and its power flow chart

行星齿轮变速器传动比和力矩计算与功率流图

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13、

permanent magnet synchronous motor ( pmsm) has many advantages, such as small torque pulsation, high torque/ inertia ratio and high efficiency, which make it hold the pivotal status in the modern alternating current motor.

永磁同步电机具有转矩脉动小、转矩/惯量比大、效率高等优点,在现代交流电机中占有举足轻重的地位。

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14、

formula for internal resistance ratio under a quick section-load, expressions on sectional flexural torque and shear force when rod bent are given.

给出了截面快速加载下的内阻比计算公式,以及杆件弯曲时截面弯矩、剪力的表达式。

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15、

The high ratio of torque per kilogram of active material seems to be very attractive.

比率高的扭矩,每公斤活性物质似乎是非常有吸引力.

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16、

The system's global characters are obtained under different input torque fluctuation, backlash, composite transmission error, exciting frequency and damping ratio.

得到了系统在不同的输入转矩波动、齿侧间隙、齿轮综合误差、激励频率和阻尼比参数下系统的全局特性。

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17、

More torque can be sent to the wheels in first gear than in fifth gear because first gear has a larger gear-ratio by which to multiply the torque.

一档变速传给车轮的转矩比五档传出的转矩大,因为一档变速有大的传动比,而大的降速比则加大了驱动力矩。

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18、

Firstly, the CNG engine torque control theory is introduced, and the relationship between the engine output torque and the three control parameters: the spark advance angle, the air-fuel ratio and the throttle opening, is derivated.

首先,研究天然气发动机转矩控制理论,推导点火提前角、空燃比和节气门开度三个控制参数与转矩之间的关系。

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19、

analysis results show that this kind of motor has high torque to capacity ratio.

分析结果表明该结构电机具有较高的转矩体积比.

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20、

The relationships among thrust coefficient, torque coefficient, power coefficient and blade top speed ratio of the blade s mentioned above are calculated by optimum Glauert method.

采用优化Glauert方法,对上述3种叶片的推力系数、扭矩系数、功率系数与叶尖速比之间的关系进行了计算。

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