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黃河科技學(xué)院畢業(yè)設(shè)計(jì)說明書 第 IV 頁
高低角俯仰限制電路的設(shè)計(jì)
摘 要
雷達(dá)俯仰控制是指雷達(dá)根據(jù)工作模式、量程、載機(jī)高度和目標(biāo)距離,自動(dòng)設(shè)置俯仰角度或由操作員設(shè)置俯仰角度。機(jī)載雷達(dá)天線俯仰控制通常只采用手動(dòng)方式,而機(jī)載雷達(dá)的天線俯仰控制有自動(dòng)、手動(dòng)和高度帶設(shè)置三種方式,自動(dòng)控制是指雷達(dá)系統(tǒng)根據(jù)操作員選定的工作模式、量程,自動(dòng)設(shè)置天線俯仰角;手動(dòng)控制是指雷達(dá)操作員可以根據(jù)實(shí)際探測需求,人工設(shè)置天線的俯仰角;高度帶設(shè)置是指根據(jù)載機(jī)高度和目標(biāo)距離,系統(tǒng)自動(dòng)設(shè)置天線俯仰角。
本課題是研究炮瞄雷達(dá)天線高低角工作范圍為-15—95度,當(dāng)轉(zhuǎn)到接近最高和最低極限位置時(shí),該電路自動(dòng)去掉天線驅(qū)動(dòng)電機(jī)上的控制電壓,并使天線很快被制動(dòng),防止機(jī)械和電機(jī)過荷損壞,起到保護(hù)作用。
關(guān)鍵詞: 雷達(dá)天線,俯仰機(jī)構(gòu),限制電路
The design of high and low angle pitch limit circuit
Author:He Yangyang
Tutor: Wang Fei
Abstract
Functions of the pitch and lift mechanism of radar antenna is introduced and the type and characteristics of the present mechanisms are summarized in this paper.A new type of electron mechanical servo drivemechanism is introduced which is based on the planar mechanism principle.The operation principle and operation process of this new mechanism are described.The design process is also introduced,including the program selection,the dynamic analysis and the corresponding calculations etc.The former approach includes the proper choice of reliable radar components and subsystems, and also the incorporation of the necessary redundancy in radar subsystems.
The reliability of solid-state devices is usually much higher than that of vacuum-tube devices. As a result, a tube transmitter is usually one of the least reliable radar subsystems, and use of solid-state transmitters gives considerable improvement in radar reliability, permitting the manufacture of maintenancefree radars
Keywords:radar antenna ,pitch mechanism ,limit circuit
目 錄
1緒論 …………………………………………………………………………………… 1
1.1 課題的背景及目的 ………………………………………………………………. 1
1.2 國內(nèi)外發(fā)展?fàn)顩r …………………………………………………………………. 1
1.3 課題研究內(nèi)容及要求 ……………………………………………………………. 2
2雷達(dá)俯仰機(jī)構(gòu)的設(shè)計(jì)參考 …………………………………………………………… 3
2.1 新型機(jī)構(gòu)的原理與結(jié)構(gòu)方案 …………………………………………………… 4
2.2 機(jī)構(gòu)載荷分析 …………………………………………………………………… 6
2.3 舉升機(jī)構(gòu)設(shè)計(jì) …………………………………………………………………… 7
2.4 俯仰機(jī)構(gòu)設(shè)計(jì) …………………………………………………………………… 8
2.5 機(jī)構(gòu)動(dòng)態(tài)穩(wěn)定性設(shè)計(jì) …………………………………………………………… 10
3雷達(dá)俯仰機(jī)構(gòu)電機(jī)的控制 ………………………………………………………….. 11
3.1 系統(tǒng)組成 ……………………………………………………………………….... 11
3.2 上位機(jī)單元 ……………………………………………………………………… 11
3.3 主單片機(jī)單元 …………………………………………………………………… 12
3.4 從單片機(jī)單元 …………………………………………………………………… 12
3.5 執(zhí)行單元 ………………………………………………………………………… 13
4 雷達(dá)俯仰部分的設(shè)計(jì)方案 …………………………………………………………... 14
5 高低角俯仰限制電路 ………………………………………………………………... 16
6 緩沖裝置 ……………………………………………………………………………... 19
6.1 分析計(jì)算和設(shè)計(jì) ………………………………………………………………… 19
6.2 設(shè)計(jì) ………………………………………………………………........................ 19
結(jié)論 …………………………………………………………………………………….. 22
致謝 ……………………………………………………………………………………... 23
參考文獻(xiàn) ………………………………………………………………………………... 25