An Extended Model for Ripple Analysis of 2–4 Phase Resonant Electrostatic Induction Motors

Electrostatic motors are promising forms of actuation for future robotic devices. The study of their different implementations should accelerate their adoption. Current models for resonant electrostatic induction motors were found not to be able to properly describe their behavior, namely, with rega...

Full description

Saved in:
Bibliographic Details
Published in:Actuators 2021-11, Vol.10 (11), p.291
Main Authors: Carneiro, Fernando, Zhang, Guangwei, Osada, Masahiko, Yoshimoto, Shunsuke, Yamamoto, Akio
Format: Article
Language:English
Subjects:
Actuation
capacitance matrix
Electrodes
electrostatic actuator
Experimentation
force ripple
Harmonics
induction motor
Induction motors
Mathematical models
modeling
resonance
Ripples
Robots
Thin films
Thrust
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Electrostatic motors are promising forms of actuation for future robotic devices. The study of their different implementations should accelerate their adoption. Current models for resonant electrostatic induction motors were found not to be able to properly describe their behavior, namely, with regard to changes with position. This paper reports a new analytical model for these motors, aiming to address this issue. The model is based on identification of all capacitance harmonics, through a simplified method. Using these, equations for different motor parameters, notably, thrust force, were obtained and compared to previous literature. The new equations model position dependent properties, such as force ripple. The outputs of this model were validated through experimentation with a prototype, with the results confirming the new model better describes motor behavior. An analysis into how to decrease this ripple was also discussed and tested. We concluded that the use of a higher number of harmonics resulted in a much more accurate model, capable of adequately characterizing motor outputs with changes in position.
ISSN:2076-0825
2076-0825
DOI:10.3390/act10110291