一种基于脉动载波电压注入的无编码器控制的新型解调方法

High-frequency (HF) sinusoidal pulsating signal injection is an effective technique to achieve encoderless control for permanent magnet synchronous motor (PMSM) drive systems, particularly for low-speed regions. Classical methods usually use coherent demodulation to extract the rotor position from the HF current envelope. However, its design requires specific low-pass filters (LPFs), which limits ...