最后，利用设计的PID控制器实现纵向姿态的跟踪控制，达到直升机纵向稳定控制的目的。
Finally, we use the designed PID controller to realize the longitudinal attitude tracking control of the helicopter.
文中通过研究无人机纵向航迹跟踪和横侧向协调转弯的控制律使得无人机可以以下确的姿态沿预定的航迹飞行。
The UAV can fly along the scheduled fight path with correct attitude by the research of the control law of portrait flight track and transverse coordinated turn.
但小水线面双体船的纵向运动和高速情况下的垂荡运动直接影响其在海上的运动姿态，进而影响船的运动稳定性。
But in the SWATH ship longitudinal motion and the high speed situation hangs swings the movement to affect it directly in the Marine movement posture, then affects the ship the movement stability.
其次，利用线性卡尔曼滤波器对其纵向运动姿态进行估计，依据LQG性能指标构造了最优控制规律。
Then the pose of longitudinal motion is estimated by linear Kalman filter. Finally, an optimal control rule is constructed by LQG performance index.
采用姿态稳定技术后远程火箭弹的横向散布得到有效改善，但纵向散布仍然较大，需要进一步对射程进行修正。
Although attitude stabilization technology reduces the lateral dispersion of long-range rockets effectively, their range dispersion is still not satisfactory.
基于随机控制理论，针对全浸式水翼艇的多变量随机控制方法进行探讨，并着重分析水翼艇的纵向运动姿态的随机最优控制。
In this paper, based on the theories of stochastic control, we make a study of multivariable stochastic control methods of hydrofoil and emphasize on the analysis of longitudinal motion of it.
采用经滤波处理的姿态反馈角度对中位点各参数进行连续调节，实现过渡状态下对姿态在纵向和横向上的倾斜补偿。
The attitude feedback processed by a filter was used to adjust continuously the parameters of the reference point, and the lean along the longitudinal and lateral direction are compensated.
采用经滤波处理的姿态反馈角度对中位点各参数进行连续调节，实现过渡状态下对姿态在纵向和横向上的倾斜补偿。
The attitude feedback processed by a filter was used to adjust continuously the parameters of the reference point, and the lean along the longitudinal and lateral direction are compensated.
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