车辆工程毕业设计（论文）-电动助力转向ECU激励信号系统设计.doc

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摘要
本设计介绍了电动助力转向ECU激励信号系统的组成,对系统的结构与工作原理进行了分析和研究,建立了系统软件与硬件连接线路图,并绘制了不同车速下扭矩与电机输出电流之间的曲线关系图。
在硬件方面,对系统中的数据采集卡、电压放大器和ECU进行了分析和选择;在软件方面,利用LABVIEW软件模拟产生车速信号和扭矩信号。信号通过数据采集卡输送到ECU内,ECU通过内部的计算后输出电流给电机,使电机执行相应的助力。
最后,本设计进行了电动助力转向ECU激励信号系统的试验,试验结果表明,激励信号设计是合理的,取得的结果符合汽车行驶时的工况。
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关键词:LABVIEW虚拟仪器;ECU激励信号;数据采集卡;ECU;转向助力
ABSTRACT
This design introduces the electric power steering ponents of ECU stimulus, the system structure and working principle of the analysis and research, a system software and hardware connection circuit diagram, and draws a different speed and the motor output torque under the current diagram between the curves.
On the hardware side, the system of data acquisition card, voltage amplifier and ECU were analyzed and choice; on the software side, the use of LABVIEW software, analog signals generated speed and torque signal. Signals transmitted to the ECU data acquisition card inside, ECU calculated by the internal output current to the motor, the motor implementation of appropriate help.
Finally, the design of the electric power steering system ECU stimulus tests, test results show that the excitation signal design is reasonable, consistent with the results obtained when the vehicle driving conditions.
Keywords: LABVIEW virtual instrument; ECU excitation signal;Data acquisition card;ECU;Steering
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目录
摘要.………………………………………………………………………………….………………....Ⅰ
ABSTRACT………………………………………………………………………………………....Ⅱ
第1章绪论 1
1
1
1
2
3
4
第2章电动助力转向ECU激励信号系统 ….6
6
6
电动助力的理论分析..................................................................................................7
引言 7
EPS典型助力曲线 7
9
第3章硬件的设计 10
10
11
12
芯片的选择 12
驱动电路的设计 13
本章小结 14
第4章电动助力转向ECU激励信号的生成 15
LABVIEW