Open AccessPower Consumption Simulation of Servo Motors Focusing on the Influence of Mechanical Vibration on Motor Efficiency
Author(s) -
Massimiliano Rigacci,
AUTHOR_ID,
Ryuta Sato,
Keiichi Shirase
Publication year - 2022
Publication title -
international journal of automation technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.513
H-Index - 18
eISSN - 1883-8022
pISSN - 1881-7629
DOI - 10.20965/ijat.2022.p0104
Subject(s) - control theory (sociology) , torque , stall torque , motor soft starter , damping torque , vibration , direct torque control , torque motor , servomotor , power (physics) , engineering , automotive engineering , computer science , induction motor , physics , voltage , mechanical engineering , acoustics , electrical engineering , control (management) , quantum mechanics , artificial intelligence , thermodynamics
This paper presents a simulation method for the power consumption of servo motors, focusing on the influence of vibrations on the motor efficiency. An apparatus consisting of two servo motors connected through a coupling was specifically designed for this study. The efficiency of the servo motor was experimentally investigated for several torque vibration levels imposed through the selection of the control parameters, and the torque vibration level was quantified through the standard deviation of the torque signal. The efficiency map characteristics for each torque oscillating level were determined. A numerical model of the apparatus clarifying the dependency of the coupling characteristics on the oscillating torque was developed, and the torque oscillation of the system was simulated. A model based on the measured motor efficiency maps and the torque oscillation level was developed to simulate the motor efficiency under several torque vibrating conditions. Finally, the power consumption of the motor was simulated based on the simulated efficiency and mechanical power. A balance of input, output, and loss powers was presented, and the experimental measurements were compared with the simulation results. The power consumption of the motor increased when the torque oscillated owing to vibrations, and the loss of power due to both oscillations and the loss of motor efficiency was quantified.