基于多模型的捷聯(lián)紅外導引頭隔離度在線補償方法
發(fā)布時間：2018-12-21 14:59
【摘要】：以捷聯(lián)紅外導引頭的工程應用為研究背景,針對刻度尺誤差帶來的隔離度問題,提出一種基于多模型(multiple model,MM)的隔離度在線補償方法。建立了捷聯(lián)紅外導引頭隔離度模型,分析了隔離度對導彈制導系統(tǒng)穩(wěn)定性和制導精度的影響;對刻度尺誤差進行離散建模,采用基于MM的濾波算法,實時更新每個模型與真實值匹配的條件概率,得到刻度尺誤差的估計值,最后將當前時刻的刻度尺誤差估計值代入到制導回路進行在線補償。研究結果表明,捷聯(lián)導引頭隔離度的存在會削弱制導系統(tǒng)穩(wěn)定性、降低制導精度,特別在寄生回路正反饋時影響更為嚴重;所提出的基于MM的隔離度在線補償方法可較好地實時估計出作用于系統(tǒng)的刻度尺誤差,并有效實現(xiàn)了對刻度尺誤差引起的隔離度的在線抑制,具有較好的魯棒性和自適應性,達到了改善制導性能,提高制導精度的目的。
[Abstract]:Based on the engineering application of strapdown infrared seeker, an online isolation compensation method based on multiple models (multiple model,MM) is proposed to solve the isolation problem caused by scale error. The isolation degree model of strapdown infrared seeker is established, and the influence of isolation degree on the stability and guidance accuracy of missile guidance system is analyzed. The discrete modeling of scale error is carried out, and the conditional probability of matching each model with real value is updated in real time by using filter algorithm based on MM, and the estimated value of scale error is obtained. Finally, the error estimation of the scale at the current time is substituted into the guidance loop for online compensation. The results show that the existence of isolation degree of strapdown seeker will weaken the stability of guidance system and reduce the guidance accuracy, especially when the parasitic loop is positive feedback. The proposed online compensation method of isolation degree based on MM can estimate the scale error of the system in real time, and it can effectively suppress the isolation degree caused by the scale error. It has good robustness and adaptability. The aim of improving guidance performance and guidance precision is achieved.
【作者單位】： 北京理工大學宇航學院;北京電子工程總體研究所復雜產(chǎn)品智能制造系統(tǒng)技術國家重點實驗室;貴州大學電氣工程學院;北京航天新風機械設備有限責任公司;
【基金】：國家自然科學基金(61172182)資助課題
【分類號】：TJ765.333
[Abstract]:Based on the engineering application of strapdown infrared seeker, an online isolation compensation method based on multiple models (multiple model,MM) is proposed to solve the isolation problem caused by scale error. The isolation degree model of strapdown infrared seeker is established, and the influence of isolation degree on the stability and guidance accuracy of missile guidance system is analyzed. The discrete modeling of scale error is carried out, and the conditional probability of matching each model with real value is updated in real time by using filter algorithm based on MM, and the estimated value of scale error is obtained. Finally, the error estimation of the scale at the current time is substituted into the guidance loop for online compensation. The results show that the existence of isolation degree of strapdown seeker will weaken the stability of guidance system and reduce the guidance accuracy, especially when the parasitic loop is positive feedback. The proposed online compensation method of isolation degree based on MM can estimate the scale error of the system in real time, and it can effectively suppress the isolation degree caused by the scale error. It has good robustness and adaptability. The aim of improving guidance performance and guidance precision is achieved.
【作者單位】： 北京理工大學宇航學院;北京電子工程總體研究所復雜產(chǎn)品智能制造系統(tǒng)技術國家重點實驗室;貴州大學電氣工程學院;北京航天新風機械設備有限責任公司;
【基金】：國家自然科學基金(61172182)資助課題
【分類號】：TJ765.333
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