“風(fēng)云二號”衛(wèi)星噪聲試驗(yàn)高頻段控制問題研究

High frequency control of acoustic test of FY-2 satellite

摘要: 文章對“風(fēng)云二號” 04衛(wèi)星噪聲試驗(yàn)進(jìn)行了回顧,，其聲譜控制未能完全滿足試驗(yàn)大綱要求的原因主要有硬件配置,、控制系統(tǒng)參數(shù)設(shè)置等方面,。經(jīng)過理論分析和調(diào)試檢驗(yàn)，決定從3個方面來解決,，即：高頻電氣換能器EPT-200作為必須參試的設(shè)備,；試驗(yàn)過程中電氣換能器的工作介質(zhì)（液氮汽化并升溫后的氮?dú)猓毫Σ荒芴?；控制參?shù)可根據(jù)試驗(yàn)前調(diào)試的情況作適當(dāng)?shù)男拚Ｗ罱K圓滿完成了該型號05衛(wèi)星以及06衛(wèi)星的噪聲試驗(yàn),。

Abstract: The high frequency sound pressure level (SPL) fails to achieve the required spectrum of acoustic test of FY-2(04) satellite, due to hardware configuration, control system settings, and other factors. A theoretical analysis shows that the following three measures are in order, namely, high-frequency electropneumatic transducer EPT-200 should be used; N2 flow rate or pressure should be high enough; the control system parameters should be adjusted according to pre-tests. The acoustic tests of FY-2(05) and FY-2(06) satellites are finally completed.