直流无刷电动机控制系统设计书毕业设计书.docVIP

天津职业技术师范大学本科生毕业设计 直流无刷电动机控制系统设计 Brushless dc motor control system design 摘 要 当今社会，电动机的发展十分迅速，无刷直流电机是一种新型电机。由转子定子和转子位置检测元件等组成,结构简单、效率高、工作特性优良,而且具有可靠性更高、制造维护更方便应用范围更广泛、体积更小、控制更容易等优点无刷电机研究具有大意义。 关键词：直流无刷电动机；开闭环电路；双闭环调速；MOSFET驱动 ABSTRACT Nowadays society，motor has spread all areas of national economy and Peoples Daily life, and the Brushless DC motor, as a new mechanical and electrical integration, is rapidly matured in recent years. The motor consists of the stator, rotor and rotor position detection devices etc. In the absence of excitation device, it takes advantage of high efficiency, simple structure and excellent features, what’s more, it is smaller, more reliable, easier to control and more convenient to maintain and manufacture, and it has more extensive application scope. All the advantages mentioned above make the brushless motors and their control device of great significance. This design is mainly produced by ON Semiconductor MC33035 and MC33039 design of the closed-loop brushless motor speed controller. First, this paper starts from the current research situation of brushless DC motor controller. The structure of the brushless DC motor and principle are reviewed to establish a mathematical model of brushless DC motor, and a detailed analysis of the operational characteristics of the motor is derived out of its transfer function. This part describes the overall design of this system and establishes the overall framework of the system. Then, the paper introduces the main circuit design, MOSFET driver circuit design and controller peripherals circuit design, including emphatically expounds the functional modules of the system and its working principle and hardware design and realization. Finally, there is a experimental data analysis on the effects of this system control, and a summary of the design process. Key Words：the brushless DC motor； Hall signal detection；double-loop speed regulation；mosfet driver 1 概述 1 1.1课题背景与研究意义 1 1.2无刷直