本文選題：差分進(jìn)化算法 + 周期內(nèi)多載波微放電��； 參考：《中國(guó)空間科學(xué)技術(shù)》2017年02期

【摘要】：微放電是空間微波部件設(shè)計(jì)所必須考慮的失效效應(yīng)之一,隨著空間寬帶多載波模式的廣泛采用,多載波條件下微波部件微放電問題引起廣泛關(guān)注。針對(duì)周期內(nèi)多載波微放電等效功率計(jì)算所采用傳統(tǒng)經(jīng)驗(yàn)公式的不足,提出了一種基于修正差分進(jìn)化算法的確定周期內(nèi)多載波微放電等效功率的全局優(yōu)化方法。該方法通過對(duì)多載波合成信號(hào)功率特性進(jìn)行分析,推導(dǎo)獲得了20個(gè)電子渡越時(shí)間內(nèi)信號(hào)能量的表達(dá)式,采用二次插值法進(jìn)行局部搜索,采用修正差分進(jìn)化算法進(jìn)行全局優(yōu)化,從而高效、準(zhǔn)確獲得全局最優(yōu)解。以幅度相等、頻率間隔相等的多載波信號(hào)為例,進(jìn)行了等效功率的確定,與經(jīng)驗(yàn)公式的預(yù)測(cè)結(jié)果相當(dāng),驗(yàn)證了所提出方法的有效性;同時(shí),對(duì)幅度不同、頻率間隔不等的多載波信號(hào)進(jìn)行了處理,獲得了能夠指導(dǎo)微波部件微放電設(shè)計(jì)的最壞狀態(tài)及其等效功率。所提出方法不僅適用于幅度不同、頻率間隔不等的多載波信號(hào)情況,并且能夠提供微放電最壞狀態(tài)時(shí)的相位分布,為多載波微放電實(shí)驗(yàn)驗(yàn)證提供相位輸入。所提出方法相比傳統(tǒng)的基于經(jīng)驗(yàn)公式的方法具有明顯優(yōu)勢(shì),為空間寬帶多載波工作微波部件微放電設(shè)計(jì)提供有效依據(jù),在衛(wèi)星轉(zhuǎn)發(fā)器多載波微放電分析及設(shè)計(jì)中具有價(jià)值。
[Abstract]:Microdischarge is one of the failure effects that must be considered in the design of space microwave components. With the wide use of spatial broadband multicarrier mode, the micro-discharge of microwave components under multi-carrier conditions has attracted wide attention. A global optimization method for determining the equivalent power of multicarrier micro-discharge within a period is proposed based on modified differential evolutionary algorithm (modified differential evolutionary algorithm) to overcome the shortcomings of the traditional empirical formula used in the calculation of the equivalent power of multi-carrier micro-discharge within a period. By analyzing the power characteristics of multi-carrier synthesizer signal, the expression of signal energy in 20 electron transit time is derived, the local search is carried out by quadratic interpolation method, and the global optimization is carried out by modified differential evolution algorithm. Therefore, the global optimal solution is obtained efficiently and accurately. Taking the multicarrier signal with equal amplitude and equal frequency interval as an example, the equivalent power is determined, which is equivalent to the prediction result of the empirical formula, which verifies the validity of the proposed method, and at the same time, the amplitude is different. The multi-carrier signals with different frequency intervals are processed to obtain the worst state and equivalent power which can guide the design of micro-discharge of microwave components. The proposed method is not only suitable for multi-carrier signals with different amplitude and different frequency intervals, but also can provide phase distribution in the worst state of micro-discharge and provide phase input for verification of multi-carrier micro-discharge experiments. Compared with the traditional method based on empirical formula, the proposed method has obvious advantages, which provides an effective basis for the design of microdischarge of space wideband multi-carrier operating microwave components, and is valuable in the analysis and design of multi-carrier micro-discharge of satellite transponders.
【作者單位】： 西安交通大學(xué)電子物理與器件教育部重點(diǎn)實(shí)驗(yàn)室;中國(guó)空間技術(shù)研究院西安分院空間微波技術(shù)重點(diǎn)實(shí)驗(yàn)室;浙江大學(xué)應(yīng)用電磁波研究實(shí)驗(yàn)室;
【基金】：國(guó)家自然科學(xué)基金(U1537211,11675278,51675421) 空間微波技術(shù)重點(diǎn)實(shí)驗(yàn)室基金重點(diǎn)項(xiàng)目(9140C530101150C53011)
【分類號(hào)】：O46;TP18
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本文編號(hào)：1905330