The monitoring of transient regimes on machine tools based on speed, acceleration and active electric power absorbed by motors

4th ModTech International Conference - Modern Technologies in Industrial Engineering

Horodinca, M.^1

Department of Machine Tools and Tools, Machine Manufacturing Faculty, Technical University of Iasi, Bd. Dimitrie Mangeron, 61-63, 700050, Romania^1

关键词: Computer aided monitoring;    Data acquisition system;    Data processing and analysis;    Electrical power system;    Instantaneous voltage;    Mechanical loading;    Monitoring techniques;    Voltage transformer;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/145/2/022026/pdf
DOI  :  10.1088/1757-899X/145/2/022026

来源: IOP

【 摘 要 】

This paper intend to propose some new results related with computer aided monitoring of transient regimes on machine-tools based on the evolution of active electrical power absorbed by the electric motor used to drive the main kinematic chains and the evolution of rotational speed and acceleration of the main shaft. The active power is calculated in numerical format using the evolution of instantaneous voltage and current delivered by electrical power system to the electric motor. The rotational speed and acceleration of the main shaft are calculated based on the signal delivered by a sensor. Three real-time analogic signals are acquired with a very simple computer assisted setup which contains a voltage transformer, a current transformer, an AC generator as rotational speed sensor, a data acquisition system and a personal computer. The data processing and analysis was done using Matlab software. Some different transient regimes were investigated; several important conclusions related with the advantages of this monitoring technique were formulated. Many others features of the experimental setup are also available: to supervise the mechanical loading of machine-tools during cutting processes or for diagnosis of machine-tools condition by active electrical power signal analysis in frequency domain.