Design and control of a thermal stabilizing system for an Optomechanical Uncooled Infrared Imaging Camera

Jongeun Choi, Joji Yamaguchi, Simon Morales, Roberto Horowitz, Yang Zhao, Arun Majumdar, Paul Norton

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1 Citation (Scopus)

Abstract

In this paper, the design and control of a thermal stabilizing system for an Optomechanical Uncooled Infrared Imaging camera is presented, which uses an array of MEMS bimaterial can tilev erbeams to sense an infrared image source. A one-dimensional lumped parameter model of the thermal stabilization system w as deriv ed and experimentally v alidated. A model-based discrete time Linear Quadratic Gaussian Regulator(LQGR) control scheme, with a stochastic ambien t noise model, w as implemerted. The control system incorporates a reference model, which generates desired reference temperature trajectory, and integral action to respectively diminish overshoots and achieve zero steady state error in closed loop. Simulation results show that the designed LQGR con trailer is able to enhance ambien ttemperature low frequency disturbance attenuation by more than 50dB. The con trol system is able to regulate the focal-plane array (FPA) temperature with a standard deviation of about 100/tK, in spite of ttfact that the temperature measuremen t noise has a standard deviation of 1mK.

Original languageEnglish
Pages (from-to)367-372
Number of pages6
JournalIFAC Proceedings Volumes (IFAC-PapersOnline)
Volume15
Issue number1
Publication statusPublished - 2002 Jan 1
Event15th World Congress of the International Federation of Automatic Control, 2002 - Barcelona, Spain
Duration: 2002 Jul 212002 Jul 26

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All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering

Cite this

Choi, J., Yamaguchi, J., Morales, S., Horowitz, R., Zhao, Y., Majumdar, A., & Norton, P. (2002). Design and control of a thermal stabilizing system for an Optomechanical Uncooled Infrared Imaging Camera. IFAC Proceedings Volumes (IFAC-PapersOnline), 15(1), 367-372.