Herschel Heaters Control Modeling and Correlation

Palo, Savino De; Cairola, M.; Compassi, Marco; Ouchet, L.; Damasio, C.

doi:10.4271/2009-01-2348

Cited by 1 publication

(3 citation statements)

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“…The control law general expression is given by equation (4): P k = −λ⋅ P k-1 + α⋅e k + β⋅e k-1 (4) where P is the power commanded to the heaters, e is the control error (target temperature -measured temperature), λ, α and β are the control parameters.…”

Section: Application To Galileo Heaters Chainsmentioning

confidence: 99%

“…System Identification 8 applied to TMM: the linear model is built from observed input-output data of the dynamic system. In this specific case the TMM is run with selected inputs (e.g., step functions) and the computed outputs are used to find out the linearized model which best fits the original TMM 4 . The identification can be performed in the MATLAB environment with the help of a dedicated toolbox 9 and is applicable to any type of thermal model available, regardless of modeling approach -lumped parameter or Finite Element Method (FEM) -and model size.…”

Section: Introductionmentioning

confidence: 99%

“…Control System Engineer, Business Segment OOS, e-mail: ferdinando.cometto@thalesaleniaspace.com 4. Thermal Engineer, Sofiter System Engineering, e-mail: donata.pietrafesa@external.…”

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confidence: 99%

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ESATAN2SS tool translator: from ESATAN thermal networks to Space State realization

Palo

Ferrero

Cometto

et al. 2011

41st International Conference on Environmental Systems

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The number of spacecraft which implement feedback control systems to wrap up stringent thermal requirements is continuously growing. The GOCE and HERSCHEL scientific satellites and the GALILEO navigation satellite system are just some examples of this application. For the design and verification of the active thermal control systems (TCS), both thermal and control design software must be run and mathematical models need to be exchanged over these two domains. Both types of software are commercially available as ESATAN-TMS, the ESA thermal analysis reference tool and MATLAB that, along with its toolboxes, stands as the worldwide benchmark for control design and analysis. A tool named ESATAN2SS has been developed as a MATLAB script to provide a fast and easy way to derive State Space form of ESATAN thermal networks by linearization of the heat balance equation. This paper presents the main tool features, input/output options, pros and cons with respect to other approaches like system identification, verification cases run to validate the tool, application to the GALILEO spacecraft and, finally, some considerations on future developments.

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Section: Application To Galileo Heaters Chainsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%