發(fā)布時(shí)間：2018-05-08 06:54

  本文選題：高超聲速飛行器 + 容錯(cuò)控制��； 參考：《天津大學(xué)學(xué)報(bào)(自然科學(xué)與工程技術(shù)版)》2017年05期

【摘要】：針對輸入飽和下高超聲速飛行器發(fā)生執(zhí)行機(jī)構(gòu)損傷故障并存在參數(shù)不確定的情況,提出了一種基于Nussbaum增益技術(shù)的模糊自適應(yīng)動(dòng)態(tài)面容錯(cuò)控制策略.對于飛行器的高度和速度子通道,分別設(shè)計(jì)了動(dòng)態(tài)面和動(dòng)態(tài)逆控制器.利用雙曲正切函數(shù)逼近飛行器的輸入飽和特性,并基于中值定理將其轉(zhuǎn)化為控制輸入的仿射形式.對于損傷故障和參數(shù)不確定導(dǎo)致的控制增益未知問題,通過引入Nussbaum增益技術(shù)既保證控制系統(tǒng)穩(wěn)定,又可以避免控制器奇異問題.通過設(shè)計(jì)模糊自適應(yīng)系統(tǒng),在線逼近包含不確定參數(shù)與飽和逼近誤差的未知函數(shù)項(xiàng),且引入范數(shù)估計(jì)思想,使得每個(gè)模糊系統(tǒng)僅包含一個(gè)自適應(yīng)參數(shù),以減小計(jì)算量.穩(wěn)定性分析證明了閉環(huán)控制系統(tǒng)的半全局一致最終有界性,仿真結(jié)果驗(yàn)證了該容錯(cuò)控制算法的有效性.
[Abstract]:In this paper, a fuzzy adaptive dynamic face tolerance control strategy based on Nussbaum gain technology is proposed for the damage failure of the actuator and the uncertainty of the parameters in the hypersonic vehicle under input saturation. The dynamic face and the dynamic inverse controller are designed for the altitude and velocity subchannel of the aircraft. The tangent function approximated the input saturation characteristic of the aircraft and transformed it into an affine form of control input based on the median theorem. For the unknown control gain caused by the damage and parameter uncertainty, the Nussbaum gain technique was introduced to ensure the stability of the control system and avoid the singular problem of the controller. The fuzzy self is designed by the design of fuzzy self. The adaptive system approximates the unknown function terms including the uncertain parameters and the saturation approximation error, and introduces the norm estimation idea, which makes each fuzzy system contain only one adaptive parameter to reduce the amount of calculation. The stability analysis proves the semi global ultimate boundedness of the closed-loop control system, and the simulation results verify the fault tolerance control. The effectiveness of the algorithm.

【作者單位】： 天津市過程檢測與控制重點(diǎn)實(shí)驗(yàn)室天津大學(xué)電氣自動(dòng)化與信息工程學(xué)院;天津工業(yè)大學(xué)電氣工程與自動(dòng)化學(xué)院;
【基金】：天津市自然科學(xué)基金資助項(xiàng)目(12JCZDJC30300) 天津市過程檢測與控制重點(diǎn)實(shí)驗(yàn)室開放課題基金資助項(xiàng)目(TKLPMC-201613) 國家留學(xué)基金資助項(xiàng)目~~
【分類號】：V27;V328
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本文編號：1860403