【摘要】：設(shè)計了基于預(yù)測函數(shù)控制的速度控制器,以減小永磁同步電機的轉(zhuǎn)矩波動,提高電機的轉(zhuǎn)速控制精度。針對因外部擾動因素引起的控制器跟蹤性能下降問題,設(shè)計了基于預(yù)測函數(shù)控制和擾動觀測器的雙環(huán)控制器;通過擾動觀測器估計系統(tǒng)擾動,并據(jù)此產(chǎn)生轉(zhuǎn)矩電流補償量對控制量進(jìn)行前饋修正,從而實現(xiàn)擾動的抑制。實驗結(jié)果顯示:當(dāng)電機從靜止跟蹤到設(shè)定600r/min轉(zhuǎn)速時,系統(tǒng)沒有超調(diào),穩(wěn)態(tài)精度為2r/min;當(dāng)電機以600r/min穩(wěn)速運行并加入1.6N·m的轉(zhuǎn)矩擾動時,轉(zhuǎn)速最大波動為5r/min。與傳統(tǒng)的PI控制算法相比,所設(shè)計的控制器使轉(zhuǎn)速波動減小了4.2%。仿真分析和實驗數(shù)據(jù)表明:基于預(yù)測函數(shù)控制和干擾觀測器的控制器能夠有效地抑制擾動,提高系統(tǒng)轉(zhuǎn)速跟蹤精度。
[Abstract]:A speed controller based on predictive function control is designed to reduce the torque fluctuation of permanent magnet synchronous motor (PMSM) and improve the speed control accuracy of PMSM. In order to solve the problem of controller tracking performance degradation caused by external disturbance factors, a double-loop controller based on predictive function control and disturbance observer is designed, and the disturbance is estimated by disturbance observer, and the control quantity is modified by torque and current compensation, so as to suppress the disturbance. The experimental results show that when the motor moves from static tracking to setting 600r/min speed, the system has no overshoot and the steady-state accuracy is 2 r 鈮，

本文編號：2529069