Piston position sensing and control in a linear compressor using a search coil
All rights reserved. Linear compressors with clearance seals are well established for cryocoolers using either a Stirling cycle or pulse tube. However, both piston stroke and piston offset require detection and control in valved compressors. In order to manufacture linear compressor in large scale,...
| मुख्य लेखकों: | , , , |
|---|---|
| स्वरूप: | Journal article |
| प्रकाशित: |
Elsevier
2016
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| _version_ | 1826289647562522624 |
|---|---|
| author | Liang, K Stone, R Dadd, M Bailey, P |
| author_facet | Liang, K Stone, R Dadd, M Bailey, P |
| author_sort | Liang, K |
| collection | OXFORD |
| description | All rights reserved. Linear compressors with clearance seals are well established for cryocoolers using either a Stirling cycle or pulse tube. However, both piston stroke and piston offset require detection and control in valved compressors. In order to manufacture linear compressor in large scale, then a simple, robust, and cheap control system is required with a minimum of sensors and actuators. This work introduces an approach to sensing the position of the piston using a search coil. The piston stroke is detected by calculating the peak-to-peak flux linkage in relation to the measured drive voltage and current. The piston offset is proportional to an integrated modulus of the back electromotive force (emf) of the search coil. Two PID (proportional-integral-derivative) controllers were developed to control the piston stroke by adjusting the drive voltage and a solenoid valve and bleed flow to control the piston offset. Experimental results validate the proposed compressor control technique. |
| first_indexed | 2024-03-07T02:32:04Z |
| format | Journal article |
| id | oxford-uuid:a794d90d-8307-45dc-93c7-5b8de3b3c2a8 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T02:32:04Z |
| publishDate | 2016 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:a794d90d-8307-45dc-93c7-5b8de3b3c2a82022-03-27T02:55:31ZPiston position sensing and control in a linear compressor using a search coilJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:a794d90d-8307-45dc-93c7-5b8de3b3c2a8Symplectic Elements at OxfordElsevier2016Liang, KStone, RDadd, MBailey, PAll rights reserved. Linear compressors with clearance seals are well established for cryocoolers using either a Stirling cycle or pulse tube. However, both piston stroke and piston offset require detection and control in valved compressors. In order to manufacture linear compressor in large scale, then a simple, robust, and cheap control system is required with a minimum of sensors and actuators. This work introduces an approach to sensing the position of the piston using a search coil. The piston stroke is detected by calculating the peak-to-peak flux linkage in relation to the measured drive voltage and current. The piston offset is proportional to an integrated modulus of the back electromotive force (emf) of the search coil. Two PID (proportional-integral-derivative) controllers were developed to control the piston stroke by adjusting the drive voltage and a solenoid valve and bleed flow to control the piston offset. Experimental results validate the proposed compressor control technique. |
| spellingShingle | Liang, K Stone, R Dadd, M Bailey, P Piston position sensing and control in a linear compressor using a search coil |
| title | Piston position sensing and control in a linear compressor using a search coil |
| title_full | Piston position sensing and control in a linear compressor using a search coil |
| title_fullStr | Piston position sensing and control in a linear compressor using a search coil |
| title_full_unstemmed | Piston position sensing and control in a linear compressor using a search coil |
| title_short | Piston position sensing and control in a linear compressor using a search coil |
| title_sort | piston position sensing and control in a linear compressor using a search coil |
| work_keys_str_mv | AT liangk pistonpositionsensingandcontrolinalinearcompressorusingasearchcoil AT stoner pistonpositionsensingandcontrolinalinearcompressorusingasearchcoil AT daddm pistonpositionsensingandcontrolinalinearcompressorusingasearchcoil AT baileyp pistonpositionsensingandcontrolinalinearcompressorusingasearchcoil |