This method replaces the SPLL integral part of the complex to simplify the implementation method.

该方法取代了软件锁相中复杂的积分环节，使实现方法简化。

The SPLL consists of calculation frequency error, updating loop middle variable, and output control signal.

该锁相环由计算频率误差、更新环路中间变量、输出控制信号组成。

The software phase-locked loop (SPLL) technology in the steady speed control of permanent magnet brushless DC motor (BLDCM) in gyro was discussed.

研究了软件锁相环技术在陀螺用无位置传感器无刷直流电机稳速控制系统中的应用。