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Sensorless method of detecting plunger position in solenoid actuators

Hed, Simon and Knutsson, Axel (2020)
Department of Automatic Control
Abstract
This thesis investigates if it is possible to measure the plunger position in a Ledex 282352-023 solenoid actuator without the use of external sensors. To do this, various different methods, all based on comparing the current response to the applied voltage were evaluated from different categories such as calculation time, reliability and distinct position levels. The method that performed best in these categories was to calculate the phase difference between the voltage and the current using Fourier coefficients (FC). Model-based programming with MATLAB and Simulink was used to evaluate the performance of the methods. The Simulink model which implemented FC as measurement method is described in detail in this thesis. To run the models in... (More)
This thesis investigates if it is possible to measure the plunger position in a Ledex 282352-023 solenoid actuator without the use of external sensors. To do this, various different methods, all based on comparing the current response to the applied voltage were evaluated from different categories such as calculation time, reliability and distinct position levels. The method that performed best in these categories was to calculate the phase difference between the voltage and the current using Fourier coefficients (FC). Model-based programming with MATLAB and Simulink was used to evaluate the performance of the methods. The Simulink model which implemented FC as measurement method is described in detail in this thesis. To run the models in real-time, hardware and software from dSpace were used which includes a MicroAutoBox II (MAB) and the program ControlDesk. This thesis was conducted in collaboration with BorgWarner. (Less)
Please use this url to cite or link to this publication:
author
Hed, Simon and Knutsson, Axel
supervisor
organization
year
type
H3 - Professional qualifications (4 Years - )
subject
report number
TFRT-6097
other publication id
0280-5316
language
English
id
9020232
date added to LUP
2020-07-16 09:04:15
date last changed
2020-07-16 09:04:15
@misc{9020232,
  abstract     = {{This thesis investigates if it is possible to measure the plunger position in a Ledex 282352-023 solenoid actuator without the use of external sensors. To do this, various different methods, all based on comparing the current response to the applied voltage were evaluated from different categories such as calculation time, reliability and distinct position levels. The method that performed best in these categories was to calculate the phase difference between the voltage and the current using Fourier coefficients (FC). Model-based programming with MATLAB and Simulink was used to evaluate the performance of the methods. The Simulink model which implemented FC as measurement method is described in detail in this thesis. To run the models in real-time, hardware and software from dSpace were used which includes a MicroAutoBox II (MAB) and the program ControlDesk. This thesis was conducted in collaboration with BorgWarner.}},
  author       = {{Hed, Simon and Knutsson, Axel}},
  language     = {{eng}},
  note         = {{Student Paper}},
  title        = {{Sensorless method of detecting plunger position in solenoid actuators}},
  year         = {{2020}},
}