ROTATING SPEED CONTROL METHOD, SYSTEM AND DEVICE, AND STORAGE MEDIUM

The present invention provides a rotation speed control method and system, a device, and a storage medium, which is applied to a heat pump system. The heat pump system includes a throttling short tube and a compressor, both sides of the throttling short tube are provided with a temperature sensor and a pressure sensor. The rotation speed control method includes: collecting actual data of the temperature sensors and the pressure sensors, processing to obtain temperature ratio data and pressure ratio data, and obtaining a corresponding oil content prediction model through matching; obtaining predicted oil content data according to the temperature ratio data and the pressure ratio data; and controlling a rotation speed of the compressor according to the predicted oil content data. The present invention obtains four oil content prediction models through training by using a large amount of data, so that the heat pump system can predict oil content of the compressor according to readings of the temperature sensors and the pressure sensors, and control the rotation speed of the compressor according to the predicted oil content of the compressor, thereby implementing automatic control over the compressor, preventing oil shortage of the compressor, and improving safety of the heat pump system.