本文選題：永磁同步電機(jī) + 滑�？刂�　； 參考：《工程科學(xué)學(xué)報(bào)》2017年06期

【摘要】：為了提高永磁同步電機(jī)的轉(zhuǎn)速控制性能,克服擾動(dòng)對(duì)伺服控制的影響,提出了一種基于新型趨近律和擾動(dòng)觀測(cè)器的滑�？刂品椒�.設(shè)計(jì)了一種新型趨近律,以解決傳統(tǒng)趨近律滑模面趨近時(shí)間和系統(tǒng)抖振之間的矛盾,提高系統(tǒng)響應(yīng)快速性.綜合考慮系統(tǒng)存在內(nèi)部參數(shù)攝動(dòng)和外部負(fù)載擾動(dòng),設(shè)計(jì)了滑模擾動(dòng)觀測(cè)器,并將觀測(cè)值前饋補(bǔ)償?shù)剿俣瓤刂破鬏敵龆?將觀測(cè)器切換增益設(shè)計(jì)為擾動(dòng)觀測(cè)誤差的函數(shù),以削弱滑模觀測(cè)值抖振.仿真結(jié)果顯示,與傳統(tǒng)趨近律相比,采用新型趨近律可有效提高系統(tǒng)的響應(yīng)速度,快速準(zhǔn)確的跟蹤速度階躍信號(hào);滑模觀測(cè)器可準(zhǔn)確的觀測(cè)系統(tǒng)擾動(dòng)的變化;當(dāng)系統(tǒng)加入負(fù)載擾動(dòng)時(shí),PI控制最大轉(zhuǎn)速波動(dòng)值為75 r·min~(-1),而基于新型趨近律和擾動(dòng)觀測(cè)器的滑模控制最大轉(zhuǎn)速波動(dòng)值較小為30 r·min~(-1),魯棒性更好.實(shí)驗(yàn)結(jié)果顯示,采用基于新型趨近律和擾動(dòng)觀測(cè)器的滑�？刂品椒ǹ梢钥焖俑�400 r·min~(-1)的速度指令,調(diào)節(jié)時(shí)間為0.12 s,穩(wěn)態(tài)跟蹤誤差為±4 r·min~(-1),且轉(zhuǎn)速無(wú)超調(diào);滑模觀測(cè)器可準(zhǔn)確無(wú)超調(diào)的估計(jì)系統(tǒng)擾動(dòng)值,進(jìn)一步提高系統(tǒng)的抗擾動(dòng)性能;當(dāng)電機(jī)以400 r·min~(-1)穩(wěn)速運(yùn)行時(shí),加入0.6 N·m的負(fù)載擾動(dòng),基于新型趨近律和擾動(dòng)觀測(cè)器的滑�？刂品椒ㄗ畲筠D(zhuǎn)速波動(dòng)為23 r·min~(-1),與PI控制相比,轉(zhuǎn)速波動(dòng)減小了8%.上述仿真和實(shí)驗(yàn)結(jié)果具有較好的一致性,表明基于新型趨近律和擾動(dòng)觀測(cè)器的滑�？刂品椒ǹ梢杂行б种苹？刂葡到y(tǒng)的抖振,提高轉(zhuǎn)速控制系統(tǒng)的魯棒性和動(dòng)態(tài)響應(yīng)性能.
[Abstract]:In order to improve the speed control performance of PMSM and overcome the influence of disturbance on servo control, a sliding mode control method based on a new approach law and disturbance observer is proposed. A new approach law is designed to solve the contradiction between the sliding mode surface approach time and the buffeting of the system, and to improve the system response speed. Considering the existence of internal parameter perturbation and external load disturbance, a sliding mode disturbance observer is designed, and the observer feedforward is compensated to the output of the speed controller, and the observer switching gain is designed as a function of disturbance observation error. To weaken the chattering of sliding mode observations. The simulation results show that compared with the traditional approach law, the new approach law can effectively improve the response speed of the system and track the velocity step signal quickly and accurately, and the sliding mode observer can accurately observe the disturbance of the system. When the load disturbance is added to the system, the maximum rotational speed fluctuation value of Pi control is 75 r / min ~ (-1), while the maximum speed fluctuation value of sliding mode control based on new approach law and disturbance observer is 30 r / min ~ (-1), so the robustness is better. The experimental results show that the sliding mode control method based on the new approach law and disturbance observer can quickly track the speed order of 400 r / min ~ (-1), the adjusting time is 0.12 s, the steady-state tracking error is 鹵4 r / min ~ (-1), and the speed is no overshoot. The sliding mode observer can accurately estimate the disturbance value of the system without overshoot, and further improve the anti-disturbance performance of the system. When the motor is running at a steady speed of 400 r / min ~ (-1), the load disturbance of 0.6 nm is added to the system. A sliding mode control method based on a new approach law and a disturbance observer is proposed. The maximum speed fluctuation is 23 r / min ~ (-1). Compared with Pi control, the speed fluctuation is reduced by 8%. The simulation and experimental results show that the sliding mode control method based on the new approach law and disturbance observer can effectively suppress the chattering of the sliding mode control system and improve the robustness and dynamic response performance of the rotational speed control system.
【作者單位】： 中國(guó)科學(xué)院長(zhǎng)春光學(xué)精密機(jī)械與物理研究所;中國(guó)科學(xué)院大學(xué);
【基金】：國(guó)家自然科學(xué)基金青年基金資助項(xiàng)目(11603024) 中國(guó)科學(xué)院長(zhǎng)春光學(xué)精密機(jī)械與物理研究所三期創(chuàng)新工程資助項(xiàng)目(065X32CN60)
【分類(lèi)號(hào)】：TM341;TP273

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