Method for controlling calibration device of wave height meter and accelerometer

Abstract

The invention discloses a method for controlling a calibration device of a wave height meter and an accelerometer, and relates to a sea condition measuring device and method for a ship model test, in particular to a method for controlling the sea condition measuring instrument calibration device for detecting the performance of the wave height meter and the accelerometer. The method comprises the following steps that the calibration function is selected, and the frequency and the amplitude of the movement of a working platform are set; the accelerometer or the wave height meter is fixed on the working platform, and the output signal end of the accelerometer or the output signal end of the wave height meter is connected to an analog-digital conversion module; the zero position of the working platform is detected and calibrated; an impulse is sent to a servo amplifier according to the set frequency and the set amplitude to drive the working platform to do reciprocating rectilinear motion according to the set frequency and the set amplitude; the actual displacement frequency and the actual amplitude of the working platform are sampled and calculated to be compared and calibrated with an output signal of the wave height meter or an output signal of the accelerometer. The accurate control over the calibration device is achieved through the precise positioning control function of a PLC host computer, the frequency and the amplitude of the movement of the adjusting working platform can be flexibly set and adjusted, the adjustment range is wide, and the control precision is high.

Description

technical field [0001] The invention relates to sea state measuring equipment and a method thereof for ship model tests, in particular to a control method of a sea state measuring instrument calibration device used for detecting the performance of a wave height meter and an accelerometer. Background technique [0002] The wave height meter and accelerometer are sea state detection instruments, and their correctness has a direct impact on the correctness of the ship model performance test. The testing instrument is a non-standard equipment and has no centralized unit of measurement. I do not know the accuracy of the testing instrument during the previous use. In order to correctly identify the accuracy of the detection instrument, it is necessary to have a calibration device capable of outputting a standard attitude to calibrate the sea state detection instrument to determine the correctness of the detection instrument. Chinese invention patent application "wave height meter...

AI Technical Summary

Problems solved by technology

When the rotating bracket is rotated to a horizontal position with the help of the rotating mandrel and installed, the workbench is in a horizontal state, and the accelerometer reciprocates horizontally for calibration of the accelerometer. Although the calibration device solves the calibration problem of the wave height meter and the accelerometer, the calibration device The problem of precise control of the attitude-rotating components still needs to be solved

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