Sensorless plunger position control and differential plunger position self-sensing using constant air gap solenoids
department or school: Applied Science, Faculty of
department or school: Engineering, School of (Okanagan)
data provider: DSpace
degree campus: UBCO
creator: Reinholz, Bradley
issued: 2022-01-17T21:37:33Z
issued: 2022
related degree: Doctor of Philosophy - PhD
degree grantor: University of British Columbia
description: Industry 4.0 cyber-physical systems will require innovative new technologies including smart sensors that can monitor their own health and smart actuators that can be controlled without a dedicated position sensor. A novel constant air gap solenoid (CAS) is presented that is configurable as a smart actuator or a smart sensor. The novel CAS actuator and CAS sensor have the unique ability to simultaneously produce two distinct self-sensed plunger position measurements unlike other electromagnetic actuators or inductive differential position sensors. These measurements can then be fused to produce a single wide-bandwidth position measurement that performs more robustly than the individual self-sensed measurements. The CAS actuator is first studied by deriving equations to describe and predict its behavior. Next, finite element analysis is utilized to investigate a basic CAS actuator geometry and predict its force and inductance characteristics. The finite element analysis results are then imported into a lumped-parameter simulation built within Simulink to predict CAS actuator performance characteristics. Afterwards, a physical prototype of the simulated geometry is fabricated and experimentally validated. The experimental results demonstrate that the prototype is capable of 40Hz sensorless plunger control for 1mm ramp and step trajectories. The CAS sensor is developed by configuring two CASs to pull against each other to allow differential measurements to be obtained. The derived analytical equations prove that the differential measurements are immune to factors, such as resistance changes due to temperature. The CAS sensor, like the CAS actuator is first studied using finite element analysis, then a Simulink simulation and is finally experimentally validated with a physical prototype. The experimental results show accurate noise-cancelling measurements that can maintain less than 1% nonlinearity. If a current sensor is removed, the CAS sensor can still achieve approx…
aggregated CHO: https://circle.library.ubc.ca/rest/handle/2429/80665
note: Sensorless Plunger Position Control and Differential Plunger Position Self-Sensing using Constant Air Gap Solenoids by Bradley Reinholz B.A.Sc., The University of British Columbia, 2014 M.A.Sc., The University of British Columbia, 2016 A THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY in THE COLLEGE OF GRADUATE STUDIES (Electrical Engineering) THE UNIVERSITY OF BRITISH COLUMBIA (Okanagan) January 2022 © Bradley Reinholz, 2022 ii The following individuals certify that they have read, and recommend to the College of Graduate Studies for acceptance, a thesis/dissertation entitled: Sensorless Plunger Position Control and Differential Plunger Position Self-Sensing using Constant Air Gap Solenoids submitted by Bradley Reinholz in partial fulfillment of the requirements of the degree of Doctor of Philosophy . Dr. Rudolf Seethaler, School of Engineering Supervisor Dr. Wilson Eberle, School of Engineering Supervisory Committee Member Dr. Homayoun Najjaran, School of Engineering Supervisory Committee Member Dr. Yang Cao, School of Engineering University Examiner Dr. Bob Koch, University of Alberta External Examiner iii Abstract Industry 4.0 cyber-physical systems will require innovative new technologies including smart sensors that can monitor their own health and smart actuators that can be controlled without a dedicated position sensor. A novel constant air gap solenoid (CAS) is presented that is configurable as a smart actuator or a smart sensor. The novel CAS actuator and CAS sensor have the unique ability to simultaneously produce two distinct self-sensed plunger position measurements unlike other electromagnetic actuators or inductive differential position sensors. These measurements can then be fused to produce a single wide-bandwidth position measurement that performs more robustly than the individual self-sensed measurements. The CAS actuator is first studied by deriving equations to describe and predict its behavior…
has type: Thesis/Dissertation
date issued: 2022-02
is shown at: 10.14288/1.0406289
language: eng
degree discipline: Electrical Engineering
provider: Vancouver : University of British Columbia Library
publisher: University of British Columbia
rights: Attribution-NonCommercial-NoDerivatives 4.0 International
rights URI: http://creativecommons.org/licenses/by-nc-nd/4.0/
scholar level: Graduate
contributor: Seethaler, Rudolf
type: Text
identifier URI: http://hdl.handle.net/2429/80665