直角濾波器 的英文怎麼說
中文拼音 [zhíjiǎolǜbōqì]
直角濾波器
英文
right-angle filter- 直 : Ⅰ形容詞1 (成直線的; 硬挺的) straight; stiff 2 (跟地面垂直的; 從上到下的; 從前到后的) erect; v...
- 角 : 角Ⅰ名詞1 (牛、羊、 鹿等頭上長出的堅硬的東西) horn 2 (古時軍中吹的樂器) bugle; horn 3 (形狀像...
- 濾 : 動詞(除去液體雜質) filter; strain
- 波 : Ⅰ名詞1 (波浪) wave 2 [物理學] (振動傳播的過程) wave 3 (意外變化) an unexpected turn of even...
- 器 : 名詞1. (器具) implement; utensil; ware 2. (器官) organ 3. (度量; 才能) capacity; talent 4. (姓氏) a surname
- 濾波器 : [電子學] electric filter; (electric) wave filter; filter
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Traditional inertial mechanized - platform uses velocities to damp the system attitude to improve the precision of attitude, when the system acceleration is small. referring to the idea, this paper designeda damp kalman filter in strap - down attitude heading reference system ( ahrs ). the new method makes use of 3 - d accelerometer ' s measurements to estimate the system attitude, which is measured to compensate attitude errors. because the acceleration affected the precision of fiher directly, the fuzzy adaptive system was presented. the fuzzy logic inputs are three accelerations and the output is to control the measurement noise covariance matrix. simulations and experimental results prove that the damp algorithm can damp most of schuler oscillation and foucauh oscillation, so that to assure the filter convergence and efficiently improve the precision of strap - down ahrs
在系統機動性不強的情況下,傳統的平臺內阻尼演算法將系統本身的速度信息通過阻尼網路加到系統中,達到提高姿態角精度的目的.將這種平臺內阻尼的思想引入到捷聯慣性航姿系統中,在系統加速度較小的情況下,利用加速度計的輸出估計系統姿態角,通過卡爾曼濾波的形式補償系統姿態誤差.由於加速度的大小直接影響濾波器精度,本文設計了模糊自適應卡爾曼濾波演算法,根據三軸加速度計的輸出調整內阻尼量測誤差方差陣,從而避免了濾波器的發散.模擬和實驗驗證,內阻尼演算法可明顯抑制舒勒周期振蕩和傅科周期振蕩,避免了系統姿態漂移,有效提高了捷聯慣性航姿系統的精度Because the ins error equation is unstable, some initial states error will cause error floating and error accumulating, if the filter observations were only position error, kalman filter will converge very slowly, and some states error ( such as yaw error ) will be great. since the milemeter altimeter and piloting could only output position information, this paper put forward a method, firstly estimateing states and then kalman filtering, to improve filtering effect. simulation proved that this method could effectively reduce the system states error, quicken filtering convergence and improve filtering precision
由於慣導系統( lsins )的誤差方程是發散的,某些初始狀態的誤差會引起誤差的漂移和積累,當觀測量只有位置誤差時,卡爾曼濾波的收斂速度很慢,某些狀態(如方位角)誤差很大,而以上除慣導外的其它導航傳感器直接提供的只是位置信息,為了改善濾波器性能,本文根據里程計等傳感器的特點,提出了首先對狀態做出估計,然後在狀態估計的基礎上,進行卡爾曼濾波的方法。Five programs have been developed with the subroutines mentioned above. these programs are used to analyze rectangular waveguide inductive iris filters, rectangular waveguide e - plane metal - insert filters, h - plane rectangular waveguide right corners, h - plane rectangular waveguide t - junctions and waveguide diplexers, respectively
論文利用矩形波導平面不連續性模式分析的這些子程序,編寫了5個程序,分別用來分析矩形波導電感膜片濾波器,矩形波導e面金屬插片濾波器, h面矩形波導直角彎頭, h面矩形波導t形結和矩形波導雙工器。
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