Automatic gearbox shift valve based on high-frequency electromagnetic valve modulation control

The invention relates to the technical field of gearboxes, and discloses an automatic gearbox shift valve based on high-frequency electromagnetic valve modulation control, which comprises an electromagnetic valve pressure regulating valve, the main body of the electromagnetic valve pressure regulating valve is a shift valve body, a pressure regulating valve is arranged in the shift valve body, and a pressure regulating valve Pc port communicated with the pressure regulating valve is arranged on the side surface of the shift valve body; the basic unit comprises a normally-open high-frequency electromagnetic valve and a cushion valve which are integrated into a whole, the normally-open high-frequency electromagnetic valve comprises an electromagnetic valve oil inlet in the top position, the top of the cushion valve is provided with a Pc oil way communicated with a Pc port of the pressure regulating valve, and the Pc oil way is further communicated with the electromagnetic valve oil inlet; a PWM (Pulse Width Mod