Self-amending method of standard error of ship-based wind speed and direction transducer

Abstract

The invention discloses a self-amending method of a standard error of a ship-based wind speed and direction transducer, which can improve the measurement accuracy of a device through online study. The technical scheme is that the self-amending method of the standard error of the ship-based wind speed and direction transducer is characterized by comprising the following steps: when relative wind speed value VR, sailing wind speed Vs and real wind speed VT satisfy 0.5<=VR-(VS+-VT)<=0.5, and the real wind speed VT >= 5.0 m/s, the standard error alpha is equal to DR; when the relative wind speed value VR, sailing wind speed Vs and real wind speed VT satisfy -0.5<=VR-(VT-VS)<= 0.5, and the real wind speed VT >= 5.0 m/s, the standard error alpha is equal to DR-180; when above limit conditions are satisfied, an amending window of the standard error is opened, a standard error value alpha 1 is obtained; along with the ship sailing under different gestures, the n standard error values are obtained and respectively marked as alpha 1, alpha 2, ...alpha n. When the n standard error value is obtained, one maximum value and one minimum value are rejected, and the remaining (n-2) values carry out the arithmetic mean, thus the standard error is obtained; the measurement result of wind speed and direction is amended by using the obtained standard error: DR=DR-alpha, and the record is amended; then the error amending in this turn is completed.

Description

technical field [0001] The invention belongs to the field of error correction methods for wind speed and direction sensors, in particular to a self-correction method for reference errors of ship-based wind speed and direction sensors that improves equipment measurement accuracy through online learning. Background technique [0002] At present, wind speed and direction sensors are used in ship-based meteorological measurement equipment to measure ambient wind. The wind speed and direction sensor is installed on the top of the main mast of the ship, and the bow and stern line of the ship is used as the reference during installation. The wind speed and direction data measured by the sensor are relative values ​​relative to the hull, that is, the wind speed is the moving speed of the air relative to the hull, and the wind direction is the wind direction relative to the bow of the ship. This measurement result is usually called relative wind. The relative wind is the vector sum ...

AI Technical Summary

Problems solved by technology

However, the sensor is installed on the top of the main mast of the ship, and high-precision construction is difficult, and the reference accuracy is generally only required to be controlled within ±5°

The reference error of ±5° will cause the measurement error of the relative wind to be greater than ±5°, which in turn will increase the error of the calculated true wind, and the greater the wind, the greater the error of the true wind calculation

[0004] In order to facilitate maintenance and guarantee, the wind speed and direction sensors are generally connected to the hull by bolts, and the sensor installation area is always in a state of vibration when the ship is sailing, which will easily cause the installation reference error of the sensor to increase day by day

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