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  本文選題：永磁同步直線電機 + 矢量控制�。� 參考：《南華大學》2014年碩士論文

【摘要】：相比于傳統(tǒng)的伺服電機，永磁同步直線電機不需要中間傳動結構，采取直驅進給方式，具有傳動剛性強、加速度大、速度快、精度高等優(yōu)勢，在高檔數(shù)控機床和精密測量加工設備等場合中具有良好的應用前景。 本文針對負載變化的永磁同步直線電機伺服系統(tǒng)提出模糊PID控制和矢量控制策略，最終通過實驗驗證了設計的系統(tǒng)滿足高精度和運行平穩(wěn)的控制性能要求。 首先，分析了永磁同步直線電機的基本結構和工作原理，建立了d-q軸數(shù)學模型，得出電磁推力方程和機械運動方程，，為電機的控制提供了理論依據(jù)。 其次，針對負載變化的永磁同步直線電機伺服系統(tǒng)，速度環(huán)采用PID控制與模糊控制相結合，以實現(xiàn)速度響應快、無超調、穩(wěn)態(tài)誤差小的控制；電流環(huán)采用矢量控制技術與PI控制相結合，以實現(xiàn)電流的精準控制；位置環(huán)采用P控制，以實現(xiàn)高精度的控制。 再次，介紹了基于DSP的數(shù)字交流驅動器的硬件電路和系統(tǒng)控制算法的軟件實現(xiàn)。 最后，搭建了永磁同步直線電機伺服系統(tǒng)實驗平臺，對系統(tǒng)電流環(huán)、速度環(huán)和位置環(huán)控制分別進行了相關實驗，其結果表明系統(tǒng)所采用的控制策略是有效的，整體性能滿足預期要求。
[Abstract]:Compared with the traditional servo motor, the permanent magnet synchronous linear motor does not need the intermediate drive structure, and adopts the direct drive feed mode, which has the advantages of strong transmission rigidity, high acceleration, high speed and high precision. It has a good application prospect in the field of high-grade NC machine tools and precision measuring and processing equipment. In this paper, fuzzy PID control and vector control strategy are proposed for the permanent magnet synchronous linear motor servo system with varying load. Finally, the experimental results show that the designed system meets the requirements of high precision and smooth operation. Firstly, the basic structure and working principle of permanent magnet linear synchronous motor are analyzed, the mathematical model of d-q axis is established, and the equations of electromagnetic thrust and mechanical motion are obtained, which provide the theoretical basis for the control of permanent magnet synchronous linear motor. Secondly, for the permanent magnet synchronous linear motor servo system with varying load, the speed loop is combined with PID control and fuzzy control to realize the control of fast speed response, no overshoot and small steady-state error. The current loop adopts the vector control technology and Pi control to realize the accurate control of the current, and the position loop uses the P control to realize the high precision control. Thirdly, the hardware circuit of digital AC driver based on DSP and the software realization of system control algorithm are introduced. Finally, the experiment platform of permanent magnet synchronous linear motor servo system is built, and the current loop, speed loop and position loop control are tested respectively. The results show that the control strategy adopted by the system is effective. Overall performance meets expected requirements.
【學位授予單位】：南華大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM359.4

【參考文獻】

相關博士學位論文 前1條

1 張代林;永磁同步直線電機伺服系統(tǒng)的控制策略和實驗研究[D];華中科技大學;2007年

本文編號：1803910