金融界2025年6月2日消息，国家知识产权局信息显示，西门子股份公司申请一项名为“伺服电机、其控制方法及伺服驱动器”的专利，公开号CN120077565A，申请日期为2022年09月。
专利摘要显示，伺服电机的控制方法，包括：在母线电容预充电的过程中，当母线电容的电压小于预设的第一电压值时，将预充电电阻两端的短接解除，并在逆变单元的交流电输出端的至少两相间建立短接；以及在母线电容预充电的过程中，当母线电容的电压大于第一电压值时，将预充电电阻两端短接，并解除逆变单元的交流电输出端的任意两相间的短接。该控制方法利于降低增加制动功能所需的成本。此外还提供了伺服驱动器和伺服电机。
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