6SE6420-2AB11-2AA1
电机驱动器所要求的四大要点
①高可靠性
为了保护电机驱动器IC不受异常电压和电流的影响，电机驱动器需要具备充分的保护功能，如防止因电源电压降低而引起误动作的功能等。另外还要求搭载在电机启动时或强制停止和堵转时控制电机电流的电流限制功能，以及将故障状态输出到外部主机处理器的功能，以确保性。
②低功耗、率
为了降低电机的功耗，需要低功耗的功率元器件和驱动技术。例如通过使用自动超前角调整功能等，可在从低速旋转到高速旋转的大范围转速区间内获得非常高的效率。
③静音、低振动
对于电机工作时的噪声和振动而言，驱动波形的优化非常重要。这就需要根据各领域的用途，选择适合各种电机磁路的激励驱动技术。比如无刷直流电机驱动器的合适激励模式（120度、150度、正弦波）、风扇电机驱动器的软启动技术、步进电机驱动器的电流衰减方式（Decay技术）等。
④控制、便利性
通过FLL（速度控制）和PLL（相位控制）实现的电机数字旋转控制技术，以及执行器要求的定位控制技术等驱动控制算法，对于电机应用系统的开发而言是不可或缺的。要求实现设计人员可轻松利用的驱动控制算法，比如通过将已进行硬逻辑处理的控制算法应用在驱动器IC。另外,驱动器IC间的兼容性可提高便利性。当在开发过程中规格发生变化时，可在不更改电机驱动控制电路板模式的情况下进行替换，这对于提高便利性而言也非常重要。
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