An intelligent control method and system for a high-wear amphibious self-suction mineral pump

Abstract

This invention relates to the field of fluid machinery operation control, and discloses an intelligent control method and system for a high-wear-resistant amphibious self-priming mining pump. The method includes collecting time-series data of the drive motor current and pump chamber pressure, constructing a function mapping relationship; calculating the phase difference and time delay between the current change rate and the pressure change rate; tracking the change process of the synchronization discrimination index around the response mismatch trigger point to determine the duration and magnitude of the synchronization deviation; when the synchronization deviation simultaneously meets preset duration and magnitude conditions, it is determined to be a water inlet interruption state; after determining the water inlet interruption state, the current response recovery time and pressure response recovery time are extracted respectively, the recovery time difference between the two is calculated, and based on the synchronization discrimination index, a drive speed adjustment function is constructed, and the drive speed adjustment function is adjusted in stages to generate a target speed command. This invention has the advantage of improving the accurate identification capability of transient air suction states.

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