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Modeling and Control of Thermal Printing

Author(s):

K. Nolde, M. Morari
Conference/Journal:

IEEE Transactions on Control Systems Technology, vol. 18, no. 2, pp. 405-413
Abstract:

In this paper, we present the development of an optimal controller for thermal printheads. A first-order linear system and a nonlinear output mapping with stochastic noise is proposed as a model of the printing dynamics. The model parameters are identified and an optimal control problem is formulated to determine the printhead input. The control algorithm is successfully tested on a standard thermal printer. A sensitivity analysis is performed by simulations and experiments to analyze the printing quality on varying setups with different printheads, printing media and ribbons. A tuning strategy is derived to adapt to changing setups without having to recompute an optimization problem. The performance of the control system for a wide range of operating systems is observed in experiments. Comparing the proposed controller to a current control implementation shows a significant quality gain in barcode readability (ISO/IEC 15416).

Year:

2010
Type of Publication:

(01)Article
Supervisor:



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% Autogenerated BibTeX entry
@Article { NolMor:2010:IFA_3541,
    author={K. Nolde and M. Morari},
    title={{Modeling and Control of Thermal Printing}},
    journal={IEEE Transactions on Control Systems Technology},
    year={2010},
    volume={18},
    number={2},
    pages={405--413},
    month=mar,
    url={http://control.ee.ethz.ch/index.cgi?page=publications;action=details;id=3541}
}
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