【作者】 卢锋；

【导师】 张建军；

【作者基本信息】 西安科技大学 ， 检测技术与自动化装置， 2009， 硕士

【摘要】 无刷直流电机以其高效能、低成本、易维护等诸多优点,在生产及日常生活中得到广泛的应用。随着工业生产自动化的发展,电机的控制方法也由原来的单电机独立控制转变为网络化集中控制。本文在ARM芯片LM3S8962的基础上设计了无刷直流电动机数字调速系统。引入CAN总线技术,使其具有组网功能和远程通信能力,可完成远程控制、集中管理。首先,论述了无刷直流电机的基本构成、工作原理和数学模型;并对其调速原理和调速方法进行了研究;提出了电流、速度双闭环数字化无刷直流电机控制策略。系统以LM3S8962为控制核心,在此基础上完成了控制系统硬件设计。控制电路主要包括电流/电压检测保护电路、速度/位置检测电路、驱动及逆变电路、CAN通信接口电路和人机接口电路等。接着,在硬件设计的基础上,调用底层驱动库函数进行了系统软件程序的编写。针对电机运行环境恶劣、干扰严重的特点,在系统的硬件设计、软件设计等多方面进行抗干扰的综合考虑,并采取相应的措施,有效地提高了系统的可靠性和实用性。通过现场的安装实验,基本达到了性能指标要求。更多还原

【Abstract】 Brushless DC motor (BLDCM) is widely used in production and daily life due to its excellent characteristics such as high-efficiency,low cost,well maintainability.With the development of industrial automation,motor control method is change from single–motor control into centralized control.In this paper, a solution of building a digital speed-adjustment for brushless DC motors based on LM3S8962 is presented. Because the use of CAN-bus technology ,the system have networking function and long-range communication capability, can fulfill remote control and centralized management.Firstly, depicted the basic stucture, working principle and mathematical model;studied the speed control theories and methods;proposed a BLDCM control strategy with speed loop and current loop. Based on the control core of LM3S8962,accomplished the hardware design . The control circuits are mainly composed of current/voltage detecting and protection circuits,speed/position deteting circuits,drive and inversion circuits,CAN-bus communication interface circuit and man-machine interface circuit. Then use the bottom driver library coded the software program.Aiming at the characteristic of bad environment and serious disturbance,many kinds of software and hardware measures are applied to improve systematic anti-interference ability,which comprehensively improve systematic dependability and practicability.Though on-site installation of exeriment,basically achieved the requirements of performance indicators.更多还原