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On-line, auto-tuning control of electronic expansion valves.

Author(s) : BEGHI A., CECCHINATO L., RAMPAZZO M.

Type of article: Article, IJR article

Summary

In this paper, the results of a research project aimed at deriving simple, high-performance, auto-tuning, robust control algorithms for evaporators controlled by means of EEVs (electronic expansion valves) are reported. Control design is performed by resorting to a detailed virtual prototyping environment described in Beghi and Cecchinato (2009). The proposed control scheme consists of two nested loops. In the inner loop, the plant is connected in feedback to a PID controller. It is assumed that the structure of the process model is given but its parameters are unknown. The outer loop is composed of a parameter estimator and an adaptation algorithm that updates the parameters of the PID controller on the basis of the result of a system identification procedure. Performance of the proposed controller is evaluated in the virtual prototyping environment by means of simulations.

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Pages: 1151-1161

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Details

  • Original title: On-line, auto-tuning control of electronic expansion valves.
  • Record ID : 30000572
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 34 - n. 4
  • Publication date: 2011/06

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