APPARATUS FOR MEASURING SIMULTANEOUSLY VIBRATION AND ROTATION SPEED OF TRACTION MOTOR AND METHOD THEREOF

摘要

An apparatus for measuring simultaneously vibration and rotation speed of traction motor is disclosed. An apparatus for measuring simultaneously vibration and rotation speed of traction motor comprises a rotation speed sensor installed on a traction motor, a frequency/rotation speed converter for converting a frequency of pulse transferred from the rotation speed sensor into a value of the rotation speed, a rotation speed analog-to-digital (A/D) converter for converting the value of the rotation speed transferred from the frequency/rotation speed converter into a digital value, a vibration sensor for measuring a vibration of the traction motor, a vibration analog-to-digital (A/D) converter for converting a value of a vibration transferred from the vibration sensor into a digital value, a buffer for storing the digital value of both rotation speed and vibration transferred from the rotation and vibration A/D converter, a controller for reading the digital value of both rotation speed and vibration stored on the buffer and for storing the digital value as well as a time to read the digital value, and displaying simultaneously the value of the rotation speed and the vibration stored on the memory unit in a time according to a display signal transferred from the key input unit, a display unit for displaying the measured value of both rotation speed and vibration according to the display control signal of the controller, and a key input unit for inputting command and data into the controller. Therefore, the values of both rotation speed and vibration are simultaneously displayed. Since vibration can be accurately measured at a specific speed, vibration pattern by rotation speed can be accurately analyzed.