寬頻角振動(dòng)地面模擬試驗(yàn)設(shè)備的研制
Development of a ground facility for simulating wide-band angular vibration
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摘要: 為了解并減小探月著陸系統(tǒng)之敏感器容易受到寬頻角振動(dòng)影響的任務(wù)風(fēng)險(xiǎn)，有必要進(jìn)行寬頻角振動(dòng)地面模擬試驗(yàn),。文章首先提出了寬頻角振動(dòng)的振動(dòng)轉(zhuǎn)換結(jié)構(gòu)和測(cè)量方法,，在此基礎(chǔ)上完成了試驗(yàn)設(shè)備的研制，之后針對(duì)探月著陸系統(tǒng)成像敏感器遭遇的角振動(dòng)環(huán)境進(jìn)行了地面模擬測(cè)試,。測(cè)試結(jié)果表明：該試驗(yàn)設(shè)備的寬頻角振動(dòng)模擬頻率范圍為0~2000 Hz,，控制精度達(dá)到±15%（2σ），同時(shí)還可模擬包括平移和轉(zhuǎn)動(dòng)在內(nèi)的著陸系統(tǒng)剛體運(yùn)動(dòng),。該設(shè)備已用于敏感器在角振動(dòng)環(huán)境下的地面模擬試驗(yàn)驗(yàn)證,。Abstract: To mitigate the task risks of the lunar and deep-space landers caused by the wide··band vibrations of its optics and microwave sensors, the ground simulation test is necessary. In this paper, firstly, a vibration transform structure and a measurement method are proposed and a ground facility for simulating the wide-band angular vibration simulation is developed. With regard to the angular vibration environment for the imaging sensor used for the moon lander, a meas. urement test is carried out. The results show that the simulator can have angular vibrations in a frequency range of 0 to 2000Hz, with a control precision of: ±15%, and the rotational and translational speeds can be also set tO the required values of the lander. The facility has been implemented for validating the performance of optic sensors in the angular vibration environment.
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