【正文】 I 武漢工程大學課程設計 Abstract DC speed control system is the main form of the automatic speed regulation system,it has a good starting and brake performance,can be in a wider range of speed regulation of smooth realized in speed,fast dynamic response process,and low speed running torque these excellent performance and control characteristic,but for a long time,DC speed control system has been occupies an important position. From a market perspective,DC speed control system in theory and practice are more mature, from the point of view of the control technology,it is the foundation of ac speed adjustment system. So in dc speed control system in electric transmission won the widely used. This article from the working principle of dc machines,a PWM double closed loop reversible dc speed control system,and the mathematical model of detailed analysis of system principle and the static and dynamic performance. In the theory analysis and simulation research,and on the basis of design a set of experiments with double closed loop dc speed control system,detailed introduces system main circuit,sawtooth wave produces circuit,benchmark power supply, rotate speed adjustment circuit,current regulator circuit,PWM waves generated circuit,bridge type reversible dc speed pulse width series circuit and the realization of a detection circuit. Then according to automatic control theory,double closed loop speed regulation system,the design parameters of analysis and calculation,the use of MATLAB of Simulink of the system parameters to the set of the simulation,through the simulation won the parameters setting the basis. Keywords: Double closedloop irreversible dc speed regulating system。所以在直流調速系統電氣傳動中獲得了廣泛應用。 工作量、 工作態(tài)度 20 工作量飽滿，難度較大，工作努力，遵守紀律；工 作作風嚴謹務實。 報告質量 20 報告結構嚴謹，邏輯嚴密，論述層次清晰，語言流暢，表達準確，重點突出，報告完全符合規(guī)范化要求。從市場的角度來看，直流調速系統在理論上和實踐上都比較成熟，從控制技術的角度來看，它又是交流調速系統的基礎。然后按照自動控制原理，對雙閉環(huán)調速系統的設計參數進行分析和計算，利用 MATLAB中的 Simulink 對系統進行了各種參數給定下的仿真，通過仿真獲得了參數整定的依據。 MATLAB； Ⅱ 目 錄 1 緒論 ............................................................................................................................................... 1 選題背景與意義 ................................................................................................................... 1 課題研究意義 ...................................................................................................................... 2 設計任務和要求 ................................................................................................................... 3 2系統組成及基本原理 ....................................................................................................................... 5 ..................................................................................................... 5 雙閉環(huán)調速的過程和工作原理 .............................................................................................. 6 雙閉環(huán)直流調速系統的組成 ................................................................................................. 7 主電路圖 ........................................................................................................................... 7 H橋可逆 PWM 變換器 ......................................................................................................... 9 保護電路 ............................................................................................................................11 3設計內容 ...................................................................................................................................... 12 ............................................................................................................................ 12 ............................................................................................ 12 ........................................................................................................................ 12 ................................................................................................ 13 ........................................