智能小车电源模块的设计实现.doc

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1、精品文档，仅供学习与交流，如有侵权请联系网站删除智能小车电源模块的设计与实现摘 要飞思卡尔智能赛车竞赛是以智能汽车为研究对象的创意性科技竞赛，是面向全国大学生的一种具有探索性工程实践活动，是教育部倡导的大学生科技竞赛之一。在智能小车硬件电路设计中，电源电路是其中重要的一个部分，它为系统其他各个模块提供所需的电源。本设计完成了智能小车电源模块的制作，并对设计实物进行测试和分析。该电源模块主要由赛道电源模块和供电电源模块两部分组成。赛道电源模块为电磁组提供赛道使用的高频交流电源；供电电源模块能为电机、舵机、检测电路和单片机等供电。全部硬件电路的电源由7.2V、2A/h的可充电镍镉蓄电池提供。赛道电

2、源采用由单片机89C52，L298芯片，晶体管集电极恒流特性组成的电路。供电电源分别采用低压差稳压芯片LM2940和开关稳压器LM2575-ADJ, LM2577-ADJ组成电路达到稳压效果。整个系统的电路结构简单，可靠性能高，实验测试结果满足要求。关键词: 电源模块；稳定；89C52；低压差稳压芯片 ；开关稳压器【精品文档】第 4 页The Design and Implement of Intelligent Cars Power Supply ModuleAbstractFreescale intelligent racing competition is creative techno

3、logical competition that intelligent vehicle for research object, facing the national college students with an exploratory project practice activities, and the ministry of education advocates of one of the college students technological competition. In the design of intelligent car hardware circuit,

4、 Power supply circuit is an important part. It provides power for the systems other modules. The intelligent car power supply module is designed and produced. And it is also carefully tested and analyzed. This power supply module is mainly made up of the track power supply module and the common powe

5、r supply module. The track power module provides the high-frequency ac power for games electromagnetic group. The common power supply module gives power to motor, steering engine, detection circuit and singlechip. The power of all hardware circuit is provided by a rechargeable Nickel-cadmium storage

6、 batteries which is 7.2V and 2A/h. The track power module is mainly consisted of single-chip 89C52, L298 chip, transistor circuit that its collectors current is constant. In order to achieve the voltage stabilization effect, Power supply circuit is made up of low-dropout voltage regulator chip LM294

7、0 and switching regulator LM2575-ADJ and LM2577-ADJ. It is tested that the system is simply structured and have a reliable performance by analyzing the experimental results. Key words: Power supply module; Stability; 89C52; Low-dropout voltage regulator；Switching Regulator目 录论文总页数：27页1 引言11.1 课题背景及意

8、义11.2 课题技术要求12 系统设计方案22.1 赛道电源电路方案比较与论证22.1.1 振荡电路22.1.2 功率输出电路32.1.3 恒流控制42.2 供电电源电路方案比较与论证52.2.1 5V电源的设计方案62.2.2 6V电源的设计方案62.2.3 12V电源的设计方案62.2.4 15V电源的设计方案63 详细系统设计73.1 芯片的详细介绍73.1.1 AT89C52简介73.1.2 L298 简介73.1.3 LM2940简介83.1.4 LM2575简介93.1.5 LM2577简介93.1.6 7805简介103.2 赛道电源的设计103.2.1 时钟振荡器电路设计103.2.2 功率输出113.2.3 恒流控制123.3 供电电源的设计123.3.1 5V电源的设计123.3.2 6V电源设计133.3.3 12V电源设计143.3.4 15V电源设计153.3 整体电路图164 系统调试与结果分析184.1 调试步骤与测试数据184.1.1 电流测试184.1.2 频率测试184.1.3 波形测试194.1.4 电压测试194.2 测试结果分析215 技术改进与误差分析21结 论23参考文献24致 谢25声 明26附 录27