An Error Correction Method for Code Cable Displacement Sensor

Abstract

To improve the precision of a multi-sensor composite piecewise displacement monitoring scheme whose background is the long stroke, high speed and heavy load operation condition of super deep mine hoist, analyzing the error reason of code cable displacement sensor, and aiming at the accumulated error and sawtooth error caused by vertical placement of code cable, an error correction method for code cable displacement sensor is proposed. The code cable displacement sensor is calibrated in sections by drawstring sensor respectively, and the error is corrected by looking-up table method. The results show that this method can effectively eliminate the accumulated error and sawtooth error of the code cable displacement sensor. When it is corrected., the error is kept within 15mm, which improves the measurement accuracy and system reliability of the coded cable displacement sensor, and further improves the container's accurate parking and safe operation.