查询词典 parafoil

Homing project research of parafoil system on optimal control was developed. And the characters of it were analyzed and summarized. To solve the optimal control problem, some methods about pre-solver analysis and treatment were put forward, such as moving equations translated into frame of wind and normalized.

在最优控制的求解中，提出了向风坐标系转化、无量纲化等解前分析的思想，简化了计算，方便了加权因子的选择，使目标点可达与不可达的翼伞系统归航轨迹最优控制问题得到了统一的求解。

The software includes ground monitoring and controlling software and parafoil control software.

软件则包括&地面测控软件&和&伞上控制软件&。

Simultaneously, several control strategies were brought forward in view of the basic flight properties of parafoil system.

仿真结果表明，建立的控制器和控制策略是可行的，两者结合能有效地提高翼伞系统的抗风性能和着陆精度。

And the study of parafoil inland lagged behind greatly.

国内对翼伞的研究与国外相比还有很大差距。

All those studies would be references and theoretical bases to design and working-process analyses of parafoil system.

利用最优控制原理对翼伞系统的归航问题进行了研究，并对其特点进行了分析和总结。

In parafoil system equipments for measurement and control are normally settled on recovery. In order to realize precise homing control of the system, the relative motion between recovery and parafoil was analyzed.

翼伞系统的测量及操纵设备通常安装在回收物上，为了实现翼伞系统的精确控制归航，分析了回收物和伞体之间的相对运动情况。

The results indicate that there is obvious relative motion in turning control of parafoil system, and crossover connection through multi-point can effectively restrain the relative motion.

研究结果表明，在转弯操纵时冀伞系统的两体间存在明显相对运动，但采用多点交叉连接可以使这种相对运动得到有效的抑制。

The rigid character of parafoil was analyzed. A position prediction method based on differential coefficient for parafoil control rope pulling course was put forward. The purpose was to improve airdrop precision.

通过翼伞系统的刚性特性出发，提出了一种基于微元分析的翼伞操纵绳拉动过程中的运动位置解算方法，有利于提高翼伞空投的精度。

The non-rigid jointed model of parafoil system was set up, containing added mass described in matrix form, with different value in different axis, and elasticity of gallus connected with recovery and straps connected with parafoil.

文中考虑了不同方向上附加质量的不同，以及吊带和连接带的弹性变形，建立了冀伞系统非刚性连接模型。

The improvements in the IAGA contained adding strengthen operator, improving evaluation index of premature, etc. Multi-phase homing project, making use of the flight properties of parafoil system in gliding and turning, was simple in control and facile in practice. Based on Frenet frame, the linear time-variable error equations of parafoil system were built.

基于Frenet坐标系推导和建立了翼伞系统线性时不变的误差方程，并运用&投影点&的思想来获得Frenet坐标系下偏差量的解析近似表达式，从而设计了用于翼伞系统航迹跟踪的传统PD控制器和增益调节型模糊PD控制器。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。