航向調制 的英文怎麼說
中文拼音 [hángxiàngdiàozhì]
航向調制
英文
course modulation-
Disigning coolant channel on the firebox of liquid rocket engine to loxodrome ( equal - angle helix ) groove can improve firebox coolant capability greatly. because the width dimension of loxodrome groove is narrow and the depth is deep, some machining methods are incapable, such as end - milling or electrochemistry. according to the peculiarities, a cnc disk - cutter - milling method which is composed of five motion axes with four simultaneously interpolated ones is researched. because most firebox generatrix is composed of complex curves, it is very difficult to get cnc cutting program with manual means. in order to deal with the problem, the loxodrome mathematics model is studied, and an auto - programming software system is developed. the software system can generate cnc cutting program of loxodrome on many kinds of turned surface. the constriction - distension segment of firebox is the most representative workpiece. the sharp changing of its generatrix slope makes loxodrome milling difficult. with the theory analyzing and practice cutting experiment, some applied techniques, which include milling mode and direction, choosing cutter diameter and cutting start point setting, are developed. adopting the technology above, tens regular workpiece have been manufacturing. the two - year manufacture practice has confirmed the validity and feasibility of developed loxodrome coolant channel milling method. the developed technology is also worth to be referenced to other similar workpiece
將液體火箭發動機燃燒室的冷卻通道設計為斜航線（等傾角螺旋線）槽形，可以大幅度改善燃燒室的冷卻性能.斜航線冷卻槽的槽寬尺寸較小而槽深尺寸較大，所以無法使用棒銑刀銑削、電化學等加工方式.針對這些特點，提出了五軸控制、四軸聯動的數控片銑刀銑削加工方法.由於燃燒室外表面的母線輪廓復雜，手工編制數控加工程序難度大.為了解決數控加工程序的編制問題，研究了斜航線的數學模型，開發了自動編程軟體系統.使用該系統，可以生成多種母線輪廓回轉體外表面上的斜航線數控加工程序.燃燒室收斂-擴張段的母線斜率變化大，加工難度大，是斜航線冷卻通道加工的最典型工件.經過理論分析和實際切削實驗，研究了針對該類型工件的片銑刀直徑選擇、銑削方式和方向、刀具調整和起刀點的設置等多項實際的加工方案.採用上述的一系列技術，已經成功地加工了數十個合格工件.經過兩年多的實際生產過程應用，驗證了所開發的斜航線冷卻通道加工方法的正確性和可行性.這些加工技術的研製成功，對其他相似類型零件的加工亦具有參考意義The mission assignment between the multi - uav. to the multi - uav system, the main problem is the cooperative of multi - uav. this includes the coordination of the arrival time, the attacking direction and the tasks assignment
對多無人機系統來說，最主要的問題是各無人機之間的「協調」問題，即多架無人機的航路（包括時間和攻擊方向等的限制）和任務的協調。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。Cot1s i deri ng that t he exte ] - ioi - in t el - ference mai n1 y comes from t 11e sea fl o v l11elj i t i s un ( lel ' - i1 t el ", thi s nfr ) j { j1t i ; fi + lk, 7 : f } itft, ? } { t ! : i / cx pal7er veri fj ed t he st i ~ ol1g 1 ~ oi ) ust ness of th is fuxzy va1 - iilb1 e st l ' uctul ' c control method against the mode1 uncertainties and external disturhances, such as the variat ions of the sea current i s sdeed and direct ion, ancl it a1 so coinpared it se1f wi t. h the l > ji ) contl ~ o1 ler in comnlon use and the regu1ar variable structure contro11 er
論文分別討論了潛器縱向，橫向和航向三個子系統在不同條件下的控制問題，考慮到該潛器潛航時外界干擾主要來自海流，驗證了模糊變結構控制方法對模型參數時變及海流速度、方向變化的強魯棒性，同時將該控制器跟實際工程中常用的pid控制器和常規的變結構控制器的控制效果進行比較，並結合實際情況，將該控制器同縱傾調節相結合進行控制以更好地滿足實際工程的需要。Aimed at overcoming the shortage of basic fuzzy controller, a kind of two stage fuzzy controller with scaling factors self - regulating and fuzzy pi controller is presented. when it is used in course control system, system " s anti - disturbance and response speed are satisfied
針對基本模糊控制器的不足，提出一種帶模糊pi控制的參數自調整的雙級模糊控制器，應用於船舶航向控制系統時，系統的抗擾性和響應速度方面均獲得滿意效果。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
文中通過研究無人機縱向航跡跟蹤和橫側向協調轉彎的控制律使得無人機可以以下確的姿態沿預定的航跡飛行。Aerospace. fluid systems. clamp blocks for tube lines having axial alignment. design standard and qualification testing. metric series
航空航天.流體系統.具有軸向對準裝置的管路用可調節壓塊.設計標準和合格鑒定試驗.米制系列" being the local aviation sector coordinator, cad will ensure a safe and uninterrupted airport and air traffic control operation for hong kong during the rollover, " mr w y leung, assistant director of civil aviation ( technical and planning ) said during a press visit to cad s y2k coordination and control centre ( cad y2kccc ) and the hong kong china y2k air traffic management centre ( hkc y2k atmc ) today ( wednesday )
民航處助理處長梁煥然今日（星期三）向記者介紹該處的二千年數位問題協調及管制中心，和香港二千年數位問題航空交通管理中心時說：民航處作為本地航空界過渡千禧年的統籌機關，將確保香港國際機場和航空交通管理不會中斷運作和保持安全。分享友人