Permanent magnet synchronous motor vibration noise active suppression method

The invention discloses a permanent magnet synchronous motor vibration noise active suppression method, which is based on a DSP + FPGA embedded control system architecture. On the basis that a DSP timer is interrupted to complete sampling processing and closed-loop control and obtain a modulation degree and an angle real-time instruction, an angle jump quantity between adjacent sampling points isextracted, and an angle stepping value is calculated by adopting a virtual high-frequency method; a modulation instruction is sent to an FPGA through a high-speed data bus, the amplitude of a modulation wave in a control period is equivalently linearized and stepped to an instruction value by utilizing high running speed of the FPGA, reliable zero clearing of a counter and a stepper cache is guaranteed through clock synchronization, a smooth modulation wave is generated and compared with a triangular carrier, and then a PWM pulse is output; and a driving inverter converts a direct-current busvoltage into a three-phase