Supermarket refrigeration system - Benchmark for hybrid system control

Larsen, Lars Finn Sloth; Izadi‐Zamanabadi, Roozbeh; Wisniewski, Rafael

doi:10.23919/ecc.2007.7068750

Cited by 42 publications

(61 citation statements)

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“…However, the isolation between sensor faults and parametric faults cannot be handled by the current scheme, and is compensated by a bank of Unknown Input Observers (UIOs) constructed in Yang, Rasmussen, Kieu, and Izadi-Zamanabadi (2011b), where one state variable is treated as a system unknown input. Unfortunately, the control-oriented model introduced (Larsen et al, 2007) oversimplified the heat transfer process between the refrigerant and the air, as the refrigerant loop excluding the evaporator is not modeled and assumed as known boundary conditions.…”

Section: Recent Development Of Vcc Fault Diagnosismentioning

confidence: 99%

“…A four-state nonlinear model of a supermarket refrigeration system is built using a lumped-parameter approach in Larsen, Izadi-Zamanabadi, and Wisniewski (2007). A bank of Extended Kalman Filters (EKFs) is constructed for isolating two temperature sensor faults in the types of drift, offset, freeze and hard-over, and a multi-model adaptive estimation method is employed to handle parametric fault caused by freeze-over or dirty built up in Yang, Rasmussen, Kieu, and Izadi-Zamanabadi (2011a).…”

Section: Recent Development Of Vcc Fault Diagnosismentioning

confidence: 99%

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Fault Detection and Isolation of automotive Air Conditioning systems using first principle models

Zhang

Canova

2015

Control Engineering Practice

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a b s t r a c tAlthough model-based Fault Detection and Isolation (FDI) has become a common design tool in automotive fields, its application to automotive Air Conditioning (A/C) systems based upon vapor compression cycles is limited due to the lack of control-oriented models characterizing the refrigerant phase change. The emergence of Moving Boundary Method (MBM) illuminates a promising way of assisting FDI scheme development, because common faults in automotive A/C systems, such as compressor fault, pressure transducer fault and fouling fault, can be easily incorporated by the control-oriented model developed. Out of various observed-based FDI methods, the H 1 filter technique, due to its robustness to model uncertainties and external disturbances, is chosen for designing FDI scheme over actuator/sensor/parameter faults. The model and the filter are connected closed-loop by an H 1 controller gain-scheduled to meet different cooling loads. From the closed-loop analysis results, the H 1 filter is capable of detecting and isolating actuator/sensor faults, as well as estimating parameter faults, even if external disturbances imposed on the air side of the evaporator exist.

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Section: Recent Development Of Vcc Fault Diagnosismentioning

confidence: 99%

Section: Recent Development Of Vcc Fault Diagnosismentioning

confidence: 99%

Fault Detection and Isolation of automotive Air Conditioning systems using first principle models

Zhang

Canova

2015

Control Engineering Practice

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“…Thus, all control actions are discrete on/off events. Larsen et al (2008) provide downloadable simulations of several configurations in two environments: Windali and MATLAB/ Simulink. The present work uses the MATLAB environment exclusively.…”

Section: Introductionmentioning

confidence: 99%

Predictive hybrid control of the supermarket refrigeration benchmark process

Ricker

2010

Control Engineering Practice

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“…Detailed description of these functions are given in [Larsen et al (2007)]. In (4) it can be seen that the system have a hybrid nature due to the the discrete input which represents the opening and closing of the expansion valves.…”

Section: Model Of the Refrigeration Systemmentioning

confidence: 99%

“…The mathematical model presented in this section is a summary of the supermarket refrigeration model developed in [Larsen et al (2007)]. The suction pressure P suc , comprises the common state for the combined models.…”

Section: Model Of the Refrigeration Systemmentioning

confidence: 99%

Performance Monitoring in Supermarket Refrigeration Systems - Synchronization of Refrigerated Display Cases

Chen

Green

Larsen

et al. 2009

IFAC Proceedings Volumes

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Abstract:The overall task of a supermarket refrigeration system is to maintain the quality of the foodstuff. This is done by making use of a refrigeration cycle in which a refrigerant transport heat from the refrigerated display-cases to the outdoor surroundings. Typically the system is equipped with a decentralized control system neglecting interactions between subsystems. Though these interactions are minor they from time to time lead to a synchronization of the operation of the display-cases which causes an inferior control performance and increased energy consumption. In this paper we will analyze the synchronization using bifurcation theory and show that the system has a chaos-like behavior when it is not synchronized. Therefore, it is a good choice to de-synchronize the system by making the system chaotic. The positive maximal Lyapunov exponent is usually taken as an indication that the system is chaotic, it is used in this paper as a measure of performance for the tendency of the system to synchronize.

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Supermarket refrigeration system - Benchmark for hybrid system control

Cited by 42 publications

References 0 publications

Fault Detection and Isolation of automotive Air Conditioning systems using first principle models

Fault Detection and Isolation of automotive Air Conditioning systems using first principle models

Predictive hybrid control of the supermarket refrigeration benchmark process

Performance Monitoring in Supermarket Refrigeration Systems - Synchronization of Refrigerated Display Cases

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