软件锁相环技术在无刷直流陀螺电动机高精度稳速控制中的应用研究

Study on the Software Phase-Locked Loop in the Steady Speed Control System of the BLDCM in Gyro

研究软件锁相环技术(Software Phase-Locked Loop，SPLL)在陀螺用无位置传感 器 BLDCM 稳速控制系统中的应用，它是基于 DSP 通过软件算法来实现锁相功能。阐述了软件 锁相环的工作原理，数学模型以及 DSP 实现方法，分析了软件锁相环的 z 域模型，无刷直流电 动机稳速控制系统采用高速数字信号处理器 TMS320LF2407A 作为控制处理器，实现了系统的软 件锁相环算法。

On the software phase-locked loop in the steady speed control of Permanent Magnet BLDC motors based on DSP and ML4428 is studied . The SPLL is realized by DSP. The operational principle of SPLL, the mathematical model and the implement method based on DSP are introduced. The SPLL of motor and the supply and detection of the speed are realized based on TMS320LF2407A.