yawing motion 中文意思是什麼
yawing motion
解釋
偏航運動-
Thirdly, based on the thought of motion - based ambiguity resolution, a bi - satellite attitude determination method using non - planar baselines is developed making full use of the satellites ’ geostationary property. focused on movement mode demands, the dissertation brings forward a method by large angle yawing movement accompanied with small angle pitch vibration to efficiently solve the rank deficiency problem of vehicle planar motion
再次，在基於運動解模糊的思想基礎上，充分利用北斗衛星對地靜止的特性，提出了一種非共面基線的雙星定姿方法，並重點分析了對運動特性的要求，提出通過伴隨小幅俯仰擾動的大角度偏航運動方式來有效解決載體平面運動的觀測矩陣秩虧問題。 -
This paper studies optimal helicopter flight operations in the event one - engine failure. a three - dimensional point mass with a yawing motion of uh - 60a has been used to study rto and cto from an elevated heliport or from a heliport, a first order dynamic of the oei contingency power is considered. flight after engine failure are formulated as nonlinear optimal control problems
雙發及多發直升機單發失效后，直升機飛行所需要的功率由剩餘發動機提供，而在某些需要大功率的飛行狀態時，如起飛狀態、著陸狀態等，剩餘發動機提供的功率可能滿足不了，這就需要對剩餘發動機的可用功率進行合理利用。 -
The problem is then fed to a nonlinear programming routine to solve for all parameters. the flight dynamics model with yawing motion of uh - 60a is given, scale factors of state variables and control variables are applied based on the consideration of algorithm convergence. then, the optimization of trajectories is expressed as optimal control problem with a performance index constrained by helicopter performance limits, faa regulation and so on
首先，建立帶偏航運動的直升機點質量模型，然後對狀態變量和控制變量進行無量綱處理，因為狀態變量和控制變量量值相差較大，這使得優化演算法收斂效果變差，所以需要選擇適當的縮放因子，最後把直升機單臺發動機停車后的飛行軌跡表示成一個最優控制問題，即在考慮直升機性能限制和far規范后，指定一個優化性能指標，選擇合適的路徑約束，然後再解最優控制問題。
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