trajectory control

So maneuver reentry trajectory design problem was transferred into the more complex optimum control problem with terminal constraints and inner state constraints.

这就增加了内点约束，从而使机动再入弹道设计问题成为具有内点约束和终端约束更复杂的最优控制问题。

In addition, the sliding line is extended to a full sliding trajectory control incorporating acceleration, constant speed, and deceleration segments.

并且，将单段滑模线控制扩展成包括加速段、恒速段和减速段的完全滑动轨迹控制。

Drilling operation in this well was faced with many big challenges, mainly including low ROP, thread gluing of drill collar, drilling tool breaking, large formation dip, enlargement of well deviation, as well as difficult well trajectory control.

该井施工难度大，主要表现在机械钻速缓慢、易出现钻铤粘扣、断钻具，地层倾角大井斜上升问题突出，井身轨迹控制困难。

Based on the characteristic, this paper designs an intelligent straight trajectory control system.

本文根据伸缩臂高空作业车的运动特性，研究并设计出一种智能直线轨迹控制系统。

A new spray paint robots control system model and a new Trajectory planning arithmetic.

提出了一种新的喷涂机械人控制系统模式及一种新的轨迹规划算法.

The welding robot kinematics analysis is achieved, coordinate transformation matrix using D-H method is built, and direct solution and inverse solution of the kinematics equation are deduced, which the foundation for the robot motion planning and trajectory control is established.

对设计的焊接机器人进行了运动学分析，用D-H法建立了坐标变换矩阵，推算出了运动方程的正、逆解，为机器人运动规划和轨迹控制奠定了基础。

Research on Motion Trajectory Control of 3 DOF Ultrasonic Motor with Single Stator

单定子三自由度超声电机运动轨迹控制的研究

Platform AI has made a great progress in the aspects of loose surface layer detecting, hole trajectory control, raising well-drilling effeciency by new technology, reducing costs etc.

AI平台在疏松表层造斜，井眼轨迹控制，应用钻井新工艺、新技术提高钻井效率，降低昂贵的海上钻井成本等方面，取得了长足进步。

The problems of trajectory tracking control and vibration suppression of a rigid flexible manipulator are discussed.

讨论刚柔性耦合机械臂轨迹跟踪控制和振动抑制问题.

Laser terminal guided projectile, a kind of artillery precisely guided shell, which combines laser technology with electronics and flying control technologies, can guide the shell by laser signal in the terminal stage of the trajectory to track and attack the point target accurately.

激光末制导炮弹是炮兵用于远战的一种精确制导炮弹。它集激光技术、电子技术、飞行控制技术于一体，在飞行弹道末段依靠激光信号引导，能准确地跟踪并攻击点状目标。

Finally, the control law of trajectory tracking is presented based on a control Lyapunov function.

基于控制李亚普诺夫函数推导出了轨迹跟踪的控制律.

Then above the typical terrain and under the disturbance the terrain following system is simulated. The result shows the flight control system can withstand the disturbance and track the optimal trajectory.

在典型地形情况下进行地形跟随仿真，并且为了真实模拟地形跟随，在控制通道加入风扰动，结果表明该飞控系统能够很好的抵抗风扰动，紧紧跟随最优轨迹飞行。

The method of energy-state is used to simplify the dimension of the traditional point-mass motion model, and the theory of optimal control is used for the trajectory optimization. The global optimization has been achieved with a genetic algorithm program in Matlab.

用能量状态概念简化飞机运动模型，应用最优控制理论进行飞机飞行性能的优化，使用遗传算法进行全局寻优，继而生成最优节油飞行轨迹，并通过Matlab程序进行仿真。

Then, use two methods to make the simulation. The result shows that the trajectory prediction method based on parameter identification with high generality, rapidity and accuracy can provide a basis for ballistic deflection correction and trajectory control.

结果表明，基于参数辨识的弹道预报具有通用性、快速性和准确性，可以为弹道修正及弹道控制提供基础。

Study Preview Tracking Control of Object Trajectory Based On Harmony Error

基于协调误差的目标轨迹预见跟踪控制的研究

The three-dimensional trajectory control problem for an airship with parameter uncertainties and external disturbances was considered.

研究了在系统存在不确定性或外界干扰的情况下飞艇的三维航迹控制问题。

Research on Motion Trajectory Control Technology of Teaching Robot with 4-DOF

四自由度教学型机器人运动轨迹控制技术研究

The general condition of this well was presented, based on the analysis to such problems as thin target zone, uncertain geological condition, high friction and torque, and difficulties for trajectory control.

介绍了建平1井的概况，分析了目的层薄、地质情况不确定、摩阻和扭矩大、井眼轨迹不易控制等技术难题。

Accurate prediction of BHA deflecting capacity is very important for precise well trajectory control.

预测下部钻具组合(BHA)的造斜能力对准确控制井眼轨迹十分重要.

Spacecraft reentry trajectory optimization is a kind of optimal control problem.

飞行器再入轨迹优化是一类最优控制问题.