發(fā)布時(shí)間：2018-05-24 18:46

  本文選題：動(dòng)圈式 + 直線力馬達(dá)��； 參考：《蘭州理工大學(xué)》2012年碩士論文

【摘要】：電液伺服控制系統(tǒng)綜合了電氣和液壓兩方面的優(yōu)點(diǎn)，具有控制精度高、響應(yīng)速度快、信號(hào)處理靈活、輸出功率大、結(jié)構(gòu)緊湊、重量輕等優(yōu)點(diǎn)。目前的液壓伺服系統(tǒng)中，以力反饋雙噴嘴擋板兩級(jí)電液伺服閥和直接位置內(nèi)反饋兩級(jí)滑閥式電液伺服閥應(yīng)用較廣。比起力反饋雙噴嘴擋板兩級(jí)電液伺服閥來(lái)說(shuō)，內(nèi)反饋兩級(jí)滑閥式電液伺服閥結(jié)構(gòu)簡(jiǎn)單，加工精度相對(duì)低，對(duì)油的清潔度要求不高，因而工作可靠。但因?yàn)橹苯游恢脙?nèi)反饋兩級(jí)滑閥式電液伺服閥的動(dòng)圈式直線力馬達(dá)的質(zhì)量比較大，影響了閥的固有頻率和動(dòng)態(tài)性能，導(dǎo)致其性能較差，頻寬一般為30-70Hz，只能用于要求不高的場(chǎng)合。 本文對(duì)電液伺服控制系統(tǒng)中的直接位置內(nèi)反饋兩級(jí)電液伺服閥內(nèi)的動(dòng)圈式直線力馬達(dá)進(jìn)行改進(jìn)，通過(guò)對(duì)傳統(tǒng)動(dòng)圈式直線力馬達(dá)的永磁體放置方法及其永磁體磁化方向進(jìn)行分析，發(fā)現(xiàn)磁力線分布不均勻，磁通密度低，，而且與線圈電流方向不垂直。在現(xiàn)有的技術(shù)基礎(chǔ)上，本文提出根據(jù)磁力線方向的異同在軸向放置三組線圈，形成一種新型五環(huán)型Halbach磁化陣列動(dòng)圈式直線力馬達(dá)。靜態(tài)磁場(chǎng)與動(dòng)態(tài)特性的仿真結(jié)果表明，新型直線力馬達(dá)產(chǎn)生的電磁力提高2.5倍左右,階躍響應(yīng)時(shí)間為6ms，頻寬達(dá)到277Hz。
[Abstract]:The electro-hydraulic servo control system has the advantages of high control precision, fast response speed, flexible signal processing, large output power, compact structure and light weight. In the present hydraulic servo system, the force feedback double nozzle baffle two stage electro-hydraulic servo valve and the direct position feedback two stage slide valve type electro-hydraulic servo valve are widely used. Compared with the two-stage electro-hydraulic servo valve with double-nozzle baffle with force feedback, the internal feedback two-stage slide valve has simple structure, low machining precision and low cleanliness of oil, so it works reliably. However, because of the high quality of the moving coil linear force motor of the direct position feedback two-stage slide valve type electro-hydraulic servo valve, which affects the inherent frequency and dynamic performance of the valve, the performance of the motor is poor, and the frequency width is generally 30-70 Hz, which can only be used in the situation where the requirement is not high. In this paper, the direct position feedback in the electro-hydraulic servo control system is improved. The method of permanent magnet placement and the magnetization direction of the permanent magnet are analyzed through the improvement of the moving coil linear force motor in the two-stage electro-hydraulic servo valve. It is found that the distribution of the magnetic field line is uneven, the flux density is low, and it is not perpendicular to the current direction of the coil. On the basis of the existing technology, three sets of coils are placed in the axial direction according to the difference of the direction of the magnetic force line to form a novel five-ring Halbach magnetized array moving-coil linear force motor. The simulation results of static magnetic field and dynamic characteristics show that the electromagnetic force generated by the new linear force motor is increased about 2.5 times, the step response time is 6 Ms, and the frequency width is up to 277 Hz.
【學(xué)位授予單位】：蘭州理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：TH137.52

【引證文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前2條

1 李海明;單線圈動(dòng)鐵式直線力馬達(dá)的設(shè)計(jì)[D];蘭州理工大學(xué);2013年

2 萬(wàn)剛;動(dòng)圈式電液伺服閥嵌入式控制器研究[D];浙江大學(xué);2013年

本文編號(hào)：1930149