發(fā)布時間：2017-12-28 17:31

  本文關(guān)鍵詞：考慮安裝偏差的聯(lián)合執(zhí)行機(jī)構(gòu)自適應(yīng)控制算法　出處：《哈爾濱工業(yè)大學(xué)學(xué)報》2016年11期 　論文類型：期刊論文

  更多相關(guān)文章： 控制力矩陀螺 飛輪 安裝偏差 控制精度 自適應(yīng)控制

【摘要】：為滿足衛(wèi)星機(jī)動過程中成像的需求,采用聯(lián)合控制力矩陀螺和飛輪作為執(zhí)行機(jī)構(gòu)提供大且精確的控制力矩,但其安裝的偏差會降低衛(wèi)星姿態(tài)控制精度,基于設(shè)計自適應(yīng)控制律處理這一問題.在攜帶變速控制力矩陀螺衛(wèi)星通用模型的基礎(chǔ)上,建立考慮安裝偏差的聯(lián)合執(zhí)行機(jī)構(gòu)控制模型.基于修正羅德里格參數(shù)描述的姿態(tài)運(yùn)動學(xué),設(shè)計多輸入多輸出自適應(yīng)跟蹤控制律估計執(zhí)行機(jī)構(gòu)的安裝偏差與衛(wèi)星轉(zhuǎn)動慣量,并進(jìn)行控制補(bǔ)償以提高姿態(tài)控制精度.采用平滑映射避免控制律出現(xiàn)奇異現(xiàn)象而導(dǎo)致的無法執(zhí)行,并基于Lyapunov原理分析了控制系統(tǒng)穩(wěn)定性.數(shù)學(xué)對比仿真結(jié)果表明,該控制方法能夠有效的實現(xiàn)衛(wèi)星快速機(jī)動過程中的高精度控制,可提高2個數(shù)量級的跟蹤控制精度.
[Abstract]:In order to meet the requirements in the process of mobile satellite imaging, using a combination of control moment gyro and flywheel as actuator to provide control torque and accurate, but the installation deviation will reduce the accuracy of satellite attitude control, control law to deal with this issue. Based on the design of adaptive transmission control in articles based on the general model of moment gyroscope satellite. Considering the joint actuator installation deviation control model. The modified Rodrigo attitude kinematics based on Parameterized Design of multi input multi output adaptive tracking control law enforcement agencies estimate installation deviation and satellite inertia, control and compensation to improve the accuracy of attitude control. By mapping avoid singularity phenomenon and control law can not lead to based on the principle of Lyapunov implementation, and analyzes the stability of the control system. The mathematical simulation results show that this method can control. The high precision control in the process of satellite fast maneuver can be achieved effectively, which can improve the tracking control precision of 2 orders of magnitude.
【作者單位】： 哈爾濱工業(yè)大學(xué)衛(wèi)星技術(shù)研究所;北京空間飛行器總體設(shè)計部;
【分類號】：V448.2
【正文快照】： 現(xiàn)代航天器的功能需求對衛(wèi)星的大角度快速機(jī)動能力提出更高的要求,以提高衛(wèi)星獲取信息的能力,這個能力不僅體現(xiàn)在獲取信息的快速性上[1],還體現(xiàn)在信息獲取的多樣性上(如立體成像,拼接成像等)[2-3].在一些非沿跡成像[4]、地面動目標(biāo)跟蹤這些工作模式在衛(wèi)星快速機(jī)動的基礎(chǔ)上,還，

本文編號：1346781