航向線 的英文怎麼說
中文拼音 [hángxiàngxiàn]
航向線
英文
heading line-
The course which will cut each meridian at the same angle is termed a rhumb line
與每一子午線相交成同一角度的航向叫恆向線。Bear away : to alter course away from the wind
航向下風:遠離風向改變航行路線。On account of the uncertainty existing in the nonlinear ship responded model, we design a dynamic adaptive ship steering controller by using adaptive backstepping. after deducing the update law of the unknown constant, we choose the controller gains to guarantee the closed loop system and the control signal global boundedness
由於船舶非線性響應模型中含有未知常參數的不確定項,因此採用自適應backstepping的方法,選擇參數自適應調節律,設計動態的船舶航向控制器,實現在線控制。A nonlinear ship steering controller is designed successfully. even considered the noises caused by wind, wave and current, the matlab simulation tracking error is almost zero. simulation results show that the presented algorithm is effective and robust
在存在舵機非線性和海浪干擾的情況下,分別跟蹤階躍響應及正弦曲線,航向跟蹤效果很好,幾乎無偏差跟蹤,且打舵小,具有較強的魯棒性。Based on the ship course control system, h wave filter using the linear wave model is designed and simulated through three aspects
3我們以船舶航向控制系統為基礎,採用線性海浪模型設計了一個h _海浪濾波器,並分三種情況對該濾波器進行了詳細的模擬。In the respect of neural networks control for non - linear and uncertain system, a review of some available control strategy is made. combining neural networks control and conventional control strategy supervised learning, no supervised learning and reinforcement learning neural networks self - studying and adaptive control systems for ship course control are proposed. the thesis studies particularly their characteristics
在非線性和不確定性系統的神經網路控制方面,論文總結了一些現有的神經網路自學習控制系統,然後將神經網路和常規控制(例如pid控制、自適應控制、內模控制等)結合起來,根據船舶操縱的特點,詳細研究和分析了有監督學習、無監督學習和再勵學習的船舶航向神經網路自學習型自適應控制系統。When submarine curves close the water surface, the course is affected by the quasi white noise disturbances. the close water control structure is same with that in deep water. the simulations show that the control effects are close to the ideal situations
由於在近水面航行時,航向所受到的主要是接近於白噪聲的干擾,所以採用了結構和水下相同的航向自動舵,由模擬曲線可看出控制效果比較理想。However, since the " line of sight " to the target is in motion, the missiles must develop a continuous lateral acceleration to stay on the beam
然而,由於目標瞄準線處于運動之中,所以導彈必須具有連續的橫向加速度才能保持正確的航向。In ship steering controller design, the nonlinear ship model should be written in siso strict feedback form. we start the recursive design with the system first state variable and continue with the second one. by introducing a change of coordinates, we choose lyapunov functions to stabilize the system and obtain the control law
在船舶航向控制方面,考慮船舶的穩態回轉非線性,應用backstepping方法設計:首先把系統化成單入單出的嚴格反饋控制形式(呈下三角結構) ,假設系統后一個狀態變量是前一個狀態變量的虛擬控制,通過適當的變量代換,在每一步構造李亞普諾夫函數,使前一子系統在虛擬控制下漸近穩定,逐步遞推出控制器控制規律,使整個系統在平衡點滿足一致漸近穩定性。Considering the shortcomings in the genetic algorithms, some improvements are proposed in order to elucidate its strong optimizing ability, genetic algorithms are used to optimize the pid parameters of ship autopilot. the comparison between the different simulation curves shows the validity of genetic algorithms in looking for the best parameters
本文首先用遺傳演算法來對船舶航向保持自動舵的pid控制參數進行在線優化,通過對用常規工程方法整定的pid控制和用遺傳演算法優化的pid控制的模擬曲線的比較,說明了遺傳演算法強的全局尋優能力。Firstly, while the nominal model is used, the filtering effect is very good. secondly, when the system model is n ' t definite, the filtered heading angle and rudder angle are steady in the error range. finally, when the complicated nonlinear wave model replaces the linear wave model, the filtering effect is also steady, and the estimate precision is high
首先,模擬是在名義模型的情況下進行的,此時h _濾波器的濾波效果很好;其次,我們在系統模型具有攝動的情況下進行模擬,此時經h _濾波器濾波后的航向輸出和舵令輸出基本能夠達到穩定;最後,我們採用較復雜的非線性海浪模型代替線性海浪模型進行模擬, h _濾波器的濾波效果也是比較穩定的,並且估計精度較高。With the help of simulink, fuzzy logic box provided by matlab, s - functions are written in c and m files. the output plots of heading and rudder angle can be obtained. the experiments are performed to test the disturbance rejection properties of the fuzzy model reference adaptive control compared with fuzzy control
利用matlab提供的simulink動態模擬環境,模糊邏輯工具箱及s -函數,將模型參考模糊自適應控制運用於船舶操舵系統,觀察航向及舵角輸出曲線,然後考慮風、浪及其它隨機干擾,分析系統的抗干擾性。In the end of the paper, the lqt based on ga is applied to design the flight control system of rss uavs. the intensive simulation verified the validity of our research
最後,應用基於遺傳演算法的線性二次型跟蹤器技術對放寬航向靜穩定性無人機的飛行控制系統進行設計,試驗結果驗證了研究成果的有效性。So the motion of ship is a coupling, non - linear process with large disturbance. the paper designs a rudder / fin joint control system based on the non - linear motion model of ship, which has nice performance on attenuating the rolling as well as controlling the direction of the ship
可見船舶的運動本質上是耦合非線性、大幹擾的過程,本文基於船舶的非線性運動模型進行舵鰭聯合控制系統的設計,在控制航向的同時,達到較高的減搖效果。Aiming at the control feature of large ship, the authors designed a 2 - rank derivative multi - step neural network predictive model and the algorithm of the large delay ship ' s course, and presented a fuzzy control autopilot scheme based on the model with rbf neural network and fcmac controller, it solved problems of model online identification and controller online design in traditional adaptive control, so that the high precision output follow - up control of large ship with large delay and uncertain nonlinear features can be realized
摘要針對大型船舶控制特性,設計了船舶航向的神經網路二階導數多步預測模型及其辨識和預測演算法,提出基於徑向基函數神經網路多步預測模型和模糊小腦模型關節神經網路控制器的大時滯船舶航向模糊控制自動舵方案,解決傳統自適應控制中模型的在線辨識和控制器的在線設計問題,以達到對具有大時滯、不確定非線性特性的大型船舶實現高精度輸出跟蹤控制。In hydrographic sweeping survey, considering that the surveyed route in design project description is a longer route which is composed of to geodetic coordinates, methods of mercator projection, utm ( universal transverse mercator ) projection and gauss - kruger projection were adopted to eliminate the direction deviation of sweeping survey, and conform to the conventional ay of sweeping survey as well
摘要在海道掃測工作中,考慮到設計任務書中的掃測航路是由兩點大地坐標組成的較長路線,利用墨卡托投影和utm投影及高斯克呂格投影方式既能消除掃測航向的偏差,又能符合常規掃測方法。The course keeping and the course tracking are well. through observing, analyzing and comparing the simulated curves with damping and those without damping, the roll reduction can reach 25 % or so
運用simulink工具箱得出加風、浪后系統的輸出曲線,通過觀察,可以看到舵角在有效范圍內變化,航向跟蹤和保持得很好。The method to correct the declination error of uav geomagnetic heading with gps and igrf is proposed, by means of which the true heading of the craft can be obtained with magnetic sensor in global scope
提出了基於gps ( globalpositionsystem )和igrf ( internationalgeomagneticreferencefield )的無人機磁航向地磁偏角修正方案,使無人機能夠在全球范圍內利用磁傳感器獲得子午線航向。Direction finding ( df ) equipment a vhf radio station which generates a bearing line on the radar display when an aircraft transmits. it facilitates air traffic controllers to identify aircraft operating within his area of jurisdiction
它可在飛機發出通訊訊號時,在雷達屏幕上顯示出該飛機的方向線,以協助航空交通管制員確認其所管制范圍內之飛機。The design of ship course intelligent controller based on fnn of non - linear system
船舶航向非線性系統的模糊神經網路智能控制器設計分享友人