查询词典 gimbals

The control technique of reaction wheel in the two-axis gimbals mechanism on the satellite is researched.

中国科学院西安光学精密机械研究所光电技术研究室，西安710119 [2]中国科学院研究生院，北京100039

From the experiment and analysis, it can be seen that friction limits realization of high accuracy electro-hydraulic position servo system, movement of any gimbal brings disturbance moment to servo system of other gimbals and the disturbance moment causes error, and, resolution ratio error and setting error of feedback measurement element are directly added to servo system output.

通过实验和仿真可以看出，摩擦阻碍了转台电液位置伺服系统商精度控制的实现，任何一个框架的运动都会对其余框架的伺服驱动系统产生干扰力矩并引起伺服系统误差，反馈测量元件的分辨率误差和安装误差直接反映在伺服系统输出上，对伺服系统的精度有直接影响。

Three-axis hydraulic simulator is a complex multiple-input-multiple-out nonlinear system. Its inner and outer gimbals are directly driven by a set of hydraulic servo system respectively, and its middle gimbal is directly driven by dual hydraulic motors servo system. The performance of hydraulic control system is very important to the simulator's.

液压三轴仿真转台是一个多输入多输出的复杂非线性系统，其内框和外框各由一套电液位置伺服系统直接驱动，中框由双液压马达伺服系统直接同步驱动，相应的液压控制系统的性能对转台的性能有着十分重要的影响。

The dynamical equations for a two-gimbal dynamically tuned gyro scope with mass unbalance in both the rotor and the gimbals are put forward as a development based on ideal suspension.

本文给出了转子和平衡环质量不平衡的双平衡环挠性陀螺的动力学方程，推广了理想情况下的陀螺动力学方程。

The oxalis-like diaphragm can not only improve the displacement by decoupling the sensing diaphragm but also enhance the capability of sound source localization with the optimum design of the central gimbals structure.

这种仿酢浆草的振膜能够经由减少感测振膜之间的交互影响来改善其位移量，并且能够利用中央平衡环结构的最佳化设计来提升音源定位的能力。

The impact proof mass on the gyros performance is discussed on the basis of microgyro dynamic equation and several important parameters in the design of micromechanical vibrating gyros, including equivalent moment of inertia constraint conditions in the inner and outer gimbals, sensitivity, etc .

根据陀螺的动力学方程，从陀螺设计中的重要参数——内、外框架组件的等惯量约束条件和振动灵敏度等角度，探讨了检测质量对陀螺性能的影响，为微机械框架振动陀螺的设计提供了理论依据。

Simulating also shows that coupling between gimbals and missile body is strong, which need take effect measures to isolate. While cross coupling between outer gimbal and inner gimbal is weak, which can be ignored in practice.

在此基础上，对框架动力学耦合特性进行了数值仿真，结果表明：弹体对框架的耦合较强，需要进行弹体解耦，而框架之间的交叉耦合相对较弱，实际设计时可以忽略。

Emphasis is placed on analyzing the influences of friction characteristics on hydraulic motor, dynamic coupling between gimbals, resolution ratio error and setting error of feedback measurement element on accuracy of electro-hydraulic position servo system for a certain simulation turntable.

针对具体的仿真转台电液位置伺服系统，着重分析了液压马达摩擦非线性、框架间动力学耦合、反馈测量元件的分辨率误差和安装误差对转台电液位置伺服系统精度的影响。

It is proved through the experimentation that adopting these technique can obviously improve the control precision of the reaction wheel's velocity and obviously minish the angle momentum output of the two-axis gimbals mechanism on the satellite.

结合反作用轮的控制模型，在双闭环控制结构上，加入了前馈控制和死区电压补偿。通过实验证明，采用这些技术，可以显著提高反作用轮转速的控制精度，大幅度减少星载二维转台的角动量输出。

A hybrid self-adaptive control approach is proposed for the structure of inner gimbal in direction tracking.This approach designs a self-adaptive controller by combining the discrete control and continuous control.The coupling between gimbals and the acceleration interference are converted to unmodeled dynamics of object.

针对方位跟踪通道中的内框架系统结构，提出了应用一种混合自适应控制方法，该方法在设计自适应控制器时采用离散与连续相结合的方法，并将耦合作用和加速度干扰转换为对象的未建模动态进行处理。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。