本文選題：永磁同步電動機(PMSM) + 轉速外環(huán)�。� 參考：《山東科技大學》2017年碩士論文

【摘要】：隨著社會的發(fā)展,交流電動機幾乎涵蓋了我們生活工作的各個方面。相較于常見的交流異步電動機,永磁同步電動機具有體積小、運行可靠、低損耗、結構簡單等優(yōu)點,永磁同步電動機應用越來越廣泛。隨著永磁材料的研究發(fā)展,永磁同步電動機的性能不斷提高,對永磁同步電動機調速系統(tǒng)的性能有了更高的要求。在系統(tǒng)調速過程中,如何在滿足系統(tǒng)的動態(tài)、靜態(tài)性能的基礎上獲得更好的魯棒性能成為大家研究的熱點之一。本文在傳統(tǒng)的永磁同步電動機調速控制系統(tǒng)的基礎上,針對轉速外環(huán)采用的PI控制器在調速過程中由于PI參數單一、不能在線調節(jié)等缺陷,導致永磁同步電動機在啟動時超調量過高,以及外界發(fā)生干擾時系統(tǒng)響應速度慢、抗干擾能力差等問題,對轉速環(huán)控制策略進行深入的分析研究。經過查閱大量文獻資料可知,模糊控制算法產生模糊子集,可以在已選定參數基礎上,對參數的大小進行模糊變化,實現參數單一到參數多變。因此本文轉速外環(huán)采用了模糊控制與PI控制相結合策略,建立了相應的模糊控制規(guī)則,設計了非對稱模糊PI控制器,解決了調速過程中PI參數單一問題,實現調速過程在線調節(jié)參數目的。在外界發(fā)生干擾時,由于實時在線調節(jié)PI參數,使系統(tǒng)快速響應迅速恢復穩(wěn)定運行,提高了系統(tǒng)的動態(tài)、靜態(tài)性能和魯棒性能。本文根據上述理論分析,搭建了永磁同步電動機調速系統(tǒng)仿真模型,并在此基礎上進行了實驗驗證,實驗結果表明非對稱模糊PI控制比PI控制具有更好的穩(wěn)定性。
[Abstract]:With the development of society, AC motor almost covers all aspects of our life and work. Compared with common AC asynchronous motor, permanent magnet synchronous motor has the advantages of small volume, reliable operation, low loss and simple structure, and the application of permanent magnet synchronous motor is more and more widely. With the development of permanent magnet materials, permanent magnet synchronous motor The performance of the motor is increasing and the performance of the permanent magnet synchronous motor speed control system is higher. In the process of system speed regulation, how to get better robust performance on the basis of satisfying the dynamic and static performance of the system has become one of the hot spots. This paper is in the traditional permanent magnet synchronous motor speed control system. On the basis of the PI controller used in the speed outer ring, the defects such as the single PI parameter and no on-line adjustment during the speed regulating process, which lead to the high overshoot at the start of the permanent magnet synchronous motor, and the slow response speed of the system and the poor anti-interference ability when the external disturbance occurs, and analyze the speed loop control strategy in depth. After consulting a lot of documents, it is known that the fuzzy control algorithm produces fuzzy subset. It can make fuzzy changes to the size of parameters on the basis of the selected parameters, and realize the single parameter to variable parameters. Therefore, this paper adopts the combination strategy of fuzzy control and PI control, and establishes the corresponding fuzzy control rules and designs the fuzzy control rules. Asymmetric fuzzy PI controller solves the single problem of PI parameters in the process of speed regulation, and realizes the on-line adjustment of parameters in the process of speed regulation. In the event of interference, the system can quickly respond to the PI parameters quickly and quickly, and improve the dynamic, static and robust performance of the system. This paper is based on the theory mentioned above. The simulation model of the permanent magnet synchronous motor speed control system is built, and the experimental verification is carried out on this basis. The experimental results show that the asymmetric fuzzy PI control has better stability than the PI control.

【學位授予單位】：山東科技大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TM341;TP273

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本文編號：1850340