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6ES7223-1BL32-0XB0
每个步进电机需要4根驱动线,如果直接采用中央域控的方案,那就需要总共48根驱动线来控制所有的风门电机,而且全部都需要连接到域控的输出接插件上面。这样方式无论是从线缆的成本来讲,或者系统装配的复杂度来讲,都不是优的。
如果采用智能执行器,将步进电机和电机的驱动电路(驱动电路做集成在电机模块内部)做成一个标准的模块,对外信号就只剩下12V,GND,LIN_IN和LIN_OUT,那就利用LIN的Bus Shunt Mode(BSM)来构成级联的方式大大减少总的线缆数量。在域控上只需要在LIN总线发对应的位置命令就可以,而不在需要去关注电机和步进电机的驱动。
从成本上来讲,虽然每个电机都有个单独的驱动貌似会增加一点成本,但是由于线缆的数量/长度以及域控接插件的PIN脚大为减少,其实总的成本反而会减少。另外,后续的维修成本也因为控制部分不在域控上从而大大减少。这个就是智能执行器所给予的车身域控架构的一个很好的补充。 类似的智能执行器,在新能源车上的应用比比皆是,比如:电子充电门,电子旋转大屏执行器,电子水阀,AGS,大灯随动,座椅通风电机控制等。
电子执行器的关键是电子控制电路需要做的很小,可以内嵌入电机执行机构中把电机变成一个标准的可以通过LIN或者CAN总线来进行直接数字控制的部件。而要做到这点,就只有有高集成度的电机控制SoC芯片才能做到。 这样的芯片,目前市面上有的并不多,比如比利时Melexis公司的MLX81332,或者德国Micronas的HVC4223这样的芯片。
Mitsubishi Breaker NF-SK3300 NF 300 Amp 300Amp 300A A
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Reliance Electric 415710-13A Meter Calibration PCB
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Reliance Electric 415710-13A Meter Calibration PCB
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Reliance Electric 415710-13A Meter Calibration PCB
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Reliance Electric 415710-13A Meter Calibration PCB
Reliance Electric 415710-13A Meter Calibration PCB
Reliance Electric 415710-13A Meter Calibration PCB
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Reliance Electric 415710-13A Meter Calibration PCB
Reliance Electric 415710-13A Meter Calibration PCB
Reliance Electric 415710-13A Meter Calibration PCB
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