Optimal on-off control of refrigerated transport systems

Bin Li, Richard Otten, Vikas Chandan, William F. Mohs, Jeff Berge, Andrew G Alleyne

Research output: Contribution to journalArticle

Abstract

This paper presents a hysteretic on-off control scheme with optimization algorithms for temperature regulation in refrigerated transport systems. A nonlinear dynamic refrigerated transport system model, which consists of a refrigeration unit and a cargo space, is developed. The model serves as an analytical tool for control design. An optimal on-off control strategy is developed based on the time domain analysis of the temperature oscillations. A cost function involving temperature variations from the set-point, energy consumption and average compressor on-off cycling frequency is introduced for minimization. Choices of weighting values in the cost function give the flexibility of the control approach to meet different requirements. Simulation examples are presented that demonstrate the ability and robustness of the proposed method in achieving tighter temperature regulation and higher system efficiency control in transport refrigeration systems. The simulations are augmented by experimental validation via a novel hardware-in-the-loop load emulation approach.

Original languageEnglish (US)
Pages (from-to)1406-1417
Number of pages12
JournalControl Engineering Practice
Volume18
Issue number12
DOIs
StatePublished - Dec 1 2010

Fingerprint

Cost Function
Refrigeration
Cost functions
Time Domain Analysis
Hardware-in-the-loop
Emulation
Experimental Validation
Compressor
Cycling
Temperature
Time domain analysis
Control Design
Point Sets
Nonlinear Dynamics
Energy Consumption
Weighting
Control Strategy
Optimization Algorithm
Simulation
Flexibility

Keywords

  • Control
  • Emulation
  • Model
  • On-off
  • Optimization
  • Refrigeration

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Optimal on-off control of refrigerated transport systems. / Li, Bin; Otten, Richard; Chandan, Vikas; Mohs, William F.; Berge, Jeff; Alleyne, Andrew G.

In: Control Engineering Practice, Vol. 18, No. 12, 01.12.2010, p. 1406-1417.

Research output: Contribution to journalArticle

Li, Bin ; Otten, Richard ; Chandan, Vikas ; Mohs, William F. ; Berge, Jeff ; Alleyne, Andrew G. / Optimal on-off control of refrigerated transport systems. In: Control Engineering Practice. 2010 ; Vol. 18, No. 12. pp. 1406-1417.
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