| 电动汽车车速信号采集与传输的方法 |
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| 引用本文： | 朱明,李正华.电动汽车车速信号采集与传输的方法[J].内燃机与配件,2020(13):229-230. |
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| 作者姓名： | 朱明 李正华 |
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| 作者单位： | 江西昌河汽车有限责任公司 |
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| 摘 要： | 车速信号被广泛应用于电动汽车各个ECU,车速信号的准确性直接关系到汽车的安全性与可靠性。MCU通过编码器获得电机转速,再利用后桥主减比、轮胎滚动半径计算出车速,或者ABS通过轮速传感器、轮胎滚动半径计算出车速。最后MCU和ABS分别将各自计算出的车速信号发送至CAN总线上,给各个ECU使用。
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| 关 键 词： | 电动汽车 车速信号 MCU ABS |
Method of Acquisition and Transmission of Electric Vehicle Speed Signal |
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| ZHU Ming,LI Zheng-hua.Method of Acquisition and Transmission of Electric Vehicle Speed Signal[J].Internal Combustion Engine & Parts,2020(13):229-230. |
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| Authors: | ZHU Ming LI Zheng-hua |
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| Affiliation: | (Jiangxi Changhe Automobile Co.,Ltd.,Jingdezhen 333002,China) |
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| Abstract: | The speed signal is widely used in each ECU of electric vehicle.The accuracy of speed signal is directly related to vehicle safety and reliability.The MCU obtain the motor speed through the encoder,then calculate the speed using the main reduction ratio of the rear axle and the tire rolling radius,or ABS calculate the speed by the wheel speed sensor and the tire rolling radius.Finally,the MCU and ABS respectively send the calculated speed signal to CAN bus for each ECU to use. |
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| Keywords: | electric vehicle speed signal MCU ABS |
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