文档介绍：摘要
石油资源的日益减少、大气环境的污染严重,让人们日益关注电动车。电气驱动是电动汽车的心脏,为了增加电动汽车的行驶里程,必须开发高功率密度、高效率、高可靠性以及价格合理的电气驱动系统。
电控技术的进步是以无刷电机的成功应用为标志的;同时,控制器进入了快速发展的阶段,以单片微控制器(MCU)的广泛应用为主要特征,而一批有较强的自主开发能力的电子技术企业迅速崛起。
本文主要研究的是电动车的电气控制系统;它由电子控制器、功率转换器、电动机等组成。电子控制器包括传感器、电气连接电路和微处理器,实现信号采集、转换、传输和处理;功率转换器负责驱动和制动。嵌入微处理器,可以使电动车安全驶行,并提升操控性能。在这里,作者以新型主流MCU产品STM8作为核心,成功地设计了这套电气控制系统;在软件上,设计了数字控制的PID算法,构成了闭环系统。所制作的模拟装置,启动、带载、调速性良好且运转稳定,成为了一款新型实用的控制系统。
关键字:电气驱动无刷电机 PWM技术电子换向直流逆变技术
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Abstract
The dwindling oil resources, the pollution of the atmospheric environment seriously, make people pay more attention to electric vehicle. Electric driving is the heart of an electric car, in order to increase the electric vehicle mileage, a high power density, high efficiency, high reliability and reasonable price of electric drive system must be
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Electronic control technology is marked with brushless motor widely used essfully. At the same time, the controller enters a stage of rapid development, a microprocessor ( CPU ) is widely used as the main character, and a number of strong ability of independent development of the electronic technology industry rises quickly.
This paper mainly studies the vehicle electrical control system witch consists of electronic controller, power converter, motor and ponents. The electronic prises a sensor, electrical connection circuit and the microprocessor, signal acquisition, conversion, transmission and processing; power converter for driving and braking. Embedded microprocessor can make electric car safety sail, and enhance the control performance. Here, the author used mainstream MCU STM8 products as the core, essfully designed the electrical control system; in software, designed a digital PID algorithm controller, constitutes a closed-loop system. The imitation device made by author, is good and stable operation by start, load and speed control, being a new practical control system.
Keywords: Electrical drive; Brus