This paper studies a ship heading control method based on nonlinear PID control unit.
本文对应用一种非线性PID控制器的船舶航向控制方法进行了研究。
In addition, the shortcomings of this method are shown so that the heading is definite.
此外，还指出了该方法目前存在的不足及今后的研究方向。
This paper proposes a method so that each of the navigation track error, speed error and heading error can be equivalent as an additive measurement noise.
本文提出了把航迹、航速和航向误差等效为附加的测量噪声的方法。
The practice demonstrates that the prediction to adverse geologic condition in front of the heading face by boring radar and BEAM electric method, especially to water-holding condition, is satisfied.
实践表明，采用钻孔雷达和BEAM电法探测技术对隧道掌子面前方的不良地质情况，尤其是含水情况具有较好的预测结果。
It is a new practical method to predict outburst danger according to gas emission law after shotfiring at coal heading faces.
根据煤巷掘进工作面放炮后的瓦斯涌出规律，预测工作面的突出危险性是一种新型实用的工作方法。
Aim at faultiness and oneness of the appraisal method of cold heading steel, this paper has proposed the cone forging method. It proves feasibility and gives the rudiment of the method.
鉴于冷镦钢的冷镦性能评价方法的单一性和不完善性，提出了锥锻方法，并从理论上证明了此种检验方法的可行性。
Through analysing the reason about three axis magnetic heading measured principle and error, a fast and effective method about compensation is brought forward.
通过对三轴磁航向测量原理及误差形成原因的分析，提出了一套快速有效的补偿办法。
The regularity of stress and strain of surrounding rock and support structure when using(3-heading) excavation method to construct double-arc tunnel is carried out by FEM numerical method.
应用有限元数值方法，对连拱隧道“三导洞法”施工时围岩和结构的受力、变形规律进行了分析。在两正洞拱部施工的时候，左右洞拱顶沉降约占最终沉降的70%。
To improve the accuracy and reduce the setting time for the initial alignment of marine attitude heading reference system(AHRS) under motion, a method of two-position alignment was presented.
为提高船用航姿系统的对准精度和对准速度，提出了摇摆条件下的两位置对准方案。
To improve the accuracy and reduce the setting time for the initial alignment of marine attitude heading reference system(AHRS) under motion, a method of two-position alignment was presented.
为提高船用航姿系统的对准精度和对准速度，提出了摇摆条件下的两位置对准方案。
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