A grab hoist weighing method

Abstract

This invention discloses a grab bucket lifting weighing method, which completes the calibration of 10 different loads under four working conditions, forming a calibration comparison table of current and weight under all working conditions. It includes real-time signal acquisition, wire rope self-weight compensation calculation, working condition identification and single motor weight calculation, grab bucket working condition adaptive weight synthesis, wire rope and zero-point offset correction, one-click no-load zero-point calibration, and sliding window sorting filtering processing. This invention adopts a pure bus architecture, requires no additional hardware, has precise timing, strong anti-interference capability, can adapt to mechanical and motor nonlinear characteristics, has high weighing accuracy, and is convenient for on-site debugging. It is suitable for sensorless precision weighing scenarios of port ship unloaders and various grab bucket lifting equipment.

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