High-frequency linear compressor and lateral position regulation

Nan-Chyuan Tsai, Chao Wen Chiang

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

The mathematical model for the magnetically levitated linear compressor (MLLC), which consists of a magnetic linear actuator (MLA), a pair of active magnetic bearings (AMBs), and a drive rod, is developed. To prevent any potential wear or collision by the drive rod against conventional bearings and certainly reduce noise, the AMB pair is employed to regulate the lateral position deviation of the drive rod. The integral sliding-mode control (ISMC) is synthesized to account for state-dependent system parameters and input nonlinearities for the MLLC system. In addition, the closed-loop stability, under the presence of the reaction force by gas in chamber, is proven by Lyapunov direct method. Finally, the efficacy of the ISMC is verified by intensive computer simulations to ensure its superior regulation capability for lateral position deviation on the drive rod, retention of constant stroke of the piston, and counterbalance against the reaction force by gas during Otto cycle.

Original languageEnglish
Article number5713832
Pages (from-to)127-138
Number of pages12
JournalIEEE Transactions on Control Systems Technology
Volume20
Issue number1
DOIs
Publication statusPublished - 2012 Jan 1

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Compressors
Magnetic bearings
Sliding mode control
Bearings (structural)
Otto cycle
Magnetic actuators
Linear actuators
Gases
Pistons
Wear of materials
Mathematical models
Computer simulation

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

Cite this

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abstract = "The mathematical model for the magnetically levitated linear compressor (MLLC), which consists of a magnetic linear actuator (MLA), a pair of active magnetic bearings (AMBs), and a drive rod, is developed. To prevent any potential wear or collision by the drive rod against conventional bearings and certainly reduce noise, the AMB pair is employed to regulate the lateral position deviation of the drive rod. The integral sliding-mode control (ISMC) is synthesized to account for state-dependent system parameters and input nonlinearities for the MLLC system. In addition, the closed-loop stability, under the presence of the reaction force by gas in chamber, is proven by Lyapunov direct method. Finally, the efficacy of the ISMC is verified by intensive computer simulations to ensure its superior regulation capability for lateral position deviation on the drive rod, retention of constant stroke of the piston, and counterbalance against the reaction force by gas during Otto cycle.",
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High-frequency linear compressor and lateral position regulation. / Tsai, Nan-Chyuan; Chiang, Chao Wen.

In: IEEE Transactions on Control Systems Technology, Vol. 20, No. 1, 5713832, 01.01.2012, p. 127-138.

Research output: Contribution to journalArticle

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