Obtención de la curva característica de la posición de un eje de motor desde un origen, mediante los datos obtenidos por un sensor de tres dimensiones

Abstract

The objective of this research work was to obtain the characteristic movement curve of a motor axis using the data acquired by a three-dimensional sensor. Two sensors were selected, the first was an ADXL335 analog accelerometer with an Arduino Mega microcontroller 2560 using a serial connection to get communication with the computer and the other was a digital sensor (IMU) WT901BLECL with Bluetooth 5.0 wireless connection. The ADXL335 sensor had to be programmed and calibrated, the WT901BLECL sensor had only to be calibrated for being able to use. The brackets for each sensor were designed and were 3D printed so that they could be positioned on a shaft of tests and observe the behavior of each sensor. In order to collect the data and make the graphs of each sensor. It was necessary to program in Matlab version R2019a. In the experimental phase a total of 12 tests were carried out on the sensors to see the degree of error of each one and the limitations that it has. A comparison between the two sensors was carried out to see which one can get the characteristic curve and the sensor with which the characteristic curve was completed was WT901BLECL. Since positive and negative data were found in the tests, The Lagrange polynomial regression method was used to obtain the equation of the curve, being this the one that is attached to the curve. Thanks to the WT901BLECL sensor it was possible to see and analyze the angle in which a fault or pitch exists, because it can measure angles, acceleration, angular velocity and the magnetic field. The ADXL335 sensor error was 100% and WT901BLECL 2%. Low sensitivity sensors should not be used because these have a high deficient level of measurement.